Adding upstream version 3.5.24.upstream/3.5.24upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 25435 insertions, 0 deletions

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+In addition to the names listed below, the following people provided
+useful inputs on many occasions: Paul D. Robertson, Simon J. Mudd.
+Apologies for any names omitted.
+
+19980105
+
+	The compiled-in default value for resolve_smtp_sender was
+	wrong (from the days that it was a boolean), causing smtpd
+	to dump core when the variable was not set in main.cf.
+
+	The INSTALL instructions now have separate sections for
+	the three basic ways of running vmailer.
+
+	The INSTALL instructions now have discusses how to deal
+	with chrooted processes.
+
+	Ported to RedHat 5.0. My, these people have re-organized
+	their include files quite a bit, haven't they.
+
+19980106
+
+	On RedHat Linux 4.2/5.0, when a FIFO listener opens the
+	FIFO with mode O_RDONLY, the FIFO remains forever readable
+	after the writer has closed it.  Workaround: open the FIFO
+	mode O_RDWR.
+
+	Test program: util/fifo_rdonly_bug.c
+
+	Unfortunately, the above fix triggers a bug on BSD/OS 3.1
+	where opening the FIFO mode O_RDWR causes select() to claim
+	that the FIFO is readable even before any data is written
+	to it, causing read() to block or to fail.
+
+	Test program:  util/fifo_rdwr_bug.c
+
+	printfck (check arguments of printf-like function calls)
+	found a missing argument in local/command.c
+
+	Miscellaneous Makefile cleanups that I didn't finish before
+	the first alpha release.
+
+19980107
+
+	Sometimes the DNS will claim that a domain does not exist,
+	when in fact it does. Thus, it is a bad idea to reject mail
+	from apparently non-existent domains. I have changed the
+	smtpd so that it produces a soft error responses when a
+	resolve_smtp_sender test fails with HOST_NOT_FOUND.  Note:
+	by default, this test is still disabled.
+
+	The DB and DBM read routines will now automagically figure
+	out if (key, value) pairs were written including a terminating
+	null byte or not. The DB and DBM write routines will use
+	this result to determine how to write, and will fall back
+	to per-system defaults otherwise.
+
+	Renamed the README to MUSINGS, and wrote up a README that
+	reflects the current status of the software.
+
+	Added -d (don't disconnect) and -c (show running counter)
+	option to te smtp-source test program. These tools are
+	great torture tests for the mail software, and for the
+	system that it runs on.
+
+	Turned down the process_limit parameter (# of parallel smtp
+	clients or servers) to avoid unpleasant surprises. You can
+	crank up the process_limit parameter in main.cf.
+
+19980111
+
+	Feature: when run by the superuser, mailq now shows the
+	mail queue even when the mail system is down. To this end,
+	mailq (sendmail -bp) runs the showq program directly instead
+	of connecting to the UNIX-domain service socket, and drops
+	privileges etc.  as usual.
+
+19980119
+
+	Bugfix: Edwin Kremer spotted an oversight in the negated
+	host matching code (for name or address patterns prefixed
+	by !).
+
+	Bugfix: upon receipt of a SIGHUP signal, the master now
+	disconnects from its child processes, so that the current
+	generation of child processes commits suicide, and so that
+	the next generation of child processes will use the new
+	configuration settings.
+
+	Bugfix: the smtp server now skips the sender DNS domain
+	lookup test for foo@[address]
+
+	Bugfix: don't append the local domain to foo@[address]
+
+19980120
+
+	Bugfix: old low-priority bug in some list walk code that
+	caused the master to drop core when a service was turned
+	off in master.cf.
+
+	Robustness: the mail system should be able to start up and
+	to accept local postings even while the naming service is
+	down.  For this reason, the mail system no longer uses
+	gethostbyname() to look up its own machine name.  Sites
+	that use short hostnames will have to specify their FQDN
+	in main.cf (this will eventually be done by the system
+	installation/configuration procedure). Should the config
+	language support backticks so one can say `domainname`?
+	What about $name stuff between the backtics?
+
+	Security: the master now creates FIFOs and UNIX-domain
+	sockets as the mail owner instead of as root, for better
+	protection against subverted mail systems. chmod() is
+	susceptible to race conditions. fchmod(), although safer,
+	often does not work on sockets.
+
+	Portability: anticipate that all major UNIXes will create
+	UNIX-domain sockets with permissions modified by the process
+	umask (required by POSIX). For this reason, we always
+	chmod() UNIX-domain sockets, unless the system allows us
+	to use the safer fchmod() instead.
+
+	Portability: the semi-resident servers now properly handle
+	EWOULDBLOCK returns from accept()  in addition to EGAIN
+	(on some systems, EAGAIN and EWOULDBLOCK have different
+	values).
+
+	Bugfix: the semi-resident servers now properly handle EINTR
+	returns From accept().
+
+	Bugfix: Edwin Kremer found that mynetworks() would compute
+	(32 - mask) instead of mask.
+
+19980121
+
+	Feature: /etc/vmailer/relocated is used by the local delivery
+	program and specifies what mail should be bounced with a
+	"user has moved to XXX" message. The main.cf configuration
+	parameter is "relocated_maps".  Just like the "virtual_maps"
+	config parameter, this feature is off by default, and the
+	parameter can have values such as "files" or "files, nis"
+	(on hosts equipped with NIS).
+
+19980123
+
+	Cleanup: virtual domain support moved from the queue manager
+	to the resolve service, where it belongs.
+
+	Feature: /etc/vmailer/canonical is used by the rewrite
+	service for all addresses, and maps a canonical address
+	(user@domain) to another address.  Typical use is to generate
+	Firstname.Lastname@domain addresses, or to clean up dirty
+	addresses from non-RFC 822 mail systems. The main.cf
+	configuration parameter is "canonical_maps".  Just like
+	the "virtual_maps" config parameter, this feature is off
+	by default, and the parameter can have values such as
+	"files" or "files, nis" (on hosts equipped with NIS).
+
+19980124
+
+	HPUX10 port and many little fixes from Pieter Schoenmakers.
+
+	Bugfix: isolated an old mysterious bug that could make the
+	master deaf for new connections while no child process was
+	running.  A typical result was that no pickup daemon would
+	be started after the previous one had terminated voluntarily.
+
+	Bugfix: the NIS lookup code did not mystrdup() the NIS map
+	name and would access free()d memory.
+
+19980125
+
+	Bugfix: the vstream routines would sometimes ignore flushing
+	errors. The error would still be reported by vstream_fclose()
+	and vstream_ferror().
+
+	Feature: time limit on delivery to shell commands.  Config
+	parameter: command_time_limit. Default value: 100 sec. The
+	idea is to prevent one bad .forward file or alias file
+	entry from slowly using up all local delivery process slots.
+
+19980126
+
+	Code cleanup: in preparation for SMTP extensions such as
+	SIZE, allow an extended SMTP command to have a variable
+	number of options.
+
+19980127
+
+	Bugfix: moved canonical map lookups away from the rewriting
+	module to the cleanup service, so that canonical map lookups
+	do not interfere with address rewriting on behalf of other
+	programs. Back to an older trivial-rewrite program version.
+
+	Bugfix: moved virtual map lookups away from the resolver
+	back to the queue manager, so that virtual domain lookup
+	does not interfere with address resolution on behalf of
+	other programs. Back to an older qmgr program version.
+
+19980131
+
+	Feature: integrated and adapted Guido van Rooij's SIZE
+	option (RFC 1870), carefully avoiding potential problems
+	due to overflow (by multiplying large numbers) or unsigned
+	underflow (by subtracting numbers).
+
+	Code cleanup: cleaned up the code that parses the server
+	response to the HELO/EHLO command, so that we can more
+	reliably recognize what options a server supports.
+
+19980201
+
+	Portability: integrated the IRIX 6 port by Oved Ben-Aroya.
+
+	Portability: the software now figures out by itself if a
+	server should open its FIFO read-write or read-only, to
+	avoid getting stuck with a FIFO that stays readable forever.
+
+	Bugfix: the cleanup service would terminate with a fatal
+	vstream_fseek() error when the queue file was too large.
+
+	Bugfix: the cleanup service could be killed by a signal
+	when the queue file became too large.
+
+19980203
+
+	Portability: some systems have statfs(), some have statvfs(),
+	and the relevant include files are in a different place on
+	almost every system.
+
+	Portability: the makedefs script now nukes the -O compiler
+	flag when building on AIX with IBM's own compiler...
+
+19980204
+
+	Portability: HP-UX 9.x support by Pieter Schoenmakers.
+
+	Portability: added SYSV-style ulimit() file size limit
+	support for HP-UX 9.x.
+
+	Portability: added some #includes that appeared to be
+	missing according to the Digital UNIX cc compiler.
+
+	Bugfix: sys_defs.h now correctly specifies NIS support for
+	LINUX2, HPUX9 and HPUX10.
+
+	Security: fixed a file descriptor leak in the local delivery
+	agent that could give shell commands access to the VMailer
+	IPC streams. This should not cause a vulnerability, given
+	the design and implementation of the mailer, but it would
+	be like asking for trouble.
+
+	Bugfix: the sendmail -B (body type) option did not take a
+	value.
+
+19980205
+
+	Bugfix (SUNOS5): should not have deleted the SVID_GETTOD
+	definition from util/sys_defs.h.
+
+	Bugfix (HPUX9): forgot to specify whether to use statfs()
+	or statvfs().
+
+	Bugfix (HPUX9): don't try to raise the file size ulimit.
+
+	Bugfix (HPUX9): must specify file size limit in 512-blocks.
+
+19980207
+
+	Robustness: the master process now raises the file size
+	limit when it is started with a limit that is less than
+	VMailer's file size limit.  File: util/file_limit.c.
+
+	Security: the dns lookup routines now screen all result
+	names with valid_hostname(). Bad names are treated as
+	transient errors.
+
+	Feature: qmail compatibility: when the home_mailbox parameter
+	is set, mail is delivered to ~/$home_mailbox instead of to
+	/var[/spool]/mail/username.  This hopefully makes it easier
+	to lure people away from qmail :-)
+
+	Robustness: several testers by accident configured relayhost
+	the same as myhostname. The programs now explicitly check
+	for this mistake.
+
+	Bugfix: deliver_request_read() would free unallocated memory
+	when it received an incomplete delivery request from the
+	queue manager.
+
+	Robustness: local_destination_concurrency=1 prevents parallel
+	delivery to the same user (with possibly disastrous effects
+	when that user has an expensive pipeline in the .forward
+	or procmail config file).  Each transport can have its own
+	XXX_destination_concurrency parameter, to limit the number
+	of simultaneous deliveries to the same destination.
+
+19980208
+
+	Robustness: added "slow open" mode, to gradually increase
+	the number of simultaneous connections to the same site as
+	long as delivery succeeds, and to gradually decrease the
+	number of connections while delivery fails. Brad Knowles
+	provided the inspiration to do this.
+
+	This also solves the "thundering herd" problem (making a
+	bunch of connections to a dead host when it was time to
+	retry that host). Let's see when other mailers fix this.
+
+	Feature: Added $smtpd_banner and $mail_version, for those
+	who want to show the world what software version they are
+	running.
+
+	Bugfix: vmailer-script now properly labels each syslog
+	entry.
+
+19980210
+
+	Portability: merged in NEXTSTEP 3 port from Pieter Schoenmakers
+
+	Bugfix: the local delivery program now checks that a
+	destination is a regular file before locking it.
+
+19980211
+
+	Robustness: the local delivery agent sets HOME, LOGNAME,
+	and SHELL when delivering to a user shell command. PATH is
+	always set, and TZ is passed through if it is set.
+
+19980212
+
+	Feature: mailq (sendmail -bp) now also lists the maildrop
+	queue (with mail that hasn't been picked up yet).
+
+19980213
+
+	Feature: the smtpd now says: 502 HELP not implemented. This
+	should impress the heck out of the competition :-)
+
+19980214
+
+	Feature: local delivery to configurable system-wide command
+	(e.g.  procmail) avoids the need for per-user ~/.forward
+	shell commands. Config parameter: mailbox_command.
+
+19980215
+
+	Performance: avoid running a shell when a command contains
+	no shell magic characters or built-in shell commands. This
+	speeds up delivery to all commands. File: util/exec_command.c.
+
+	Bugfix: the local delivery agent, after reading EOF from
+	a child process, now sends SIGKILL only when the child does
+	not terminate within a limited amount of time. This avoids
+	some problems with procmail.  File:  util/timed_wait.c.
+
+19980217
+
+	Portability: folded in NetInfo support from Pieter
+	Schoenmakers.
+
+19980218
+
+	Feature: new vmlock command to run a command while keeping
+	an exclusive lock on a mailbox.
+
+	Feature: with "recipient_delimiter = +", mail for local
+	address "user+foo" is delivered to "foo", with a "Delivered-To:
+	user+foo@domain" message header. Files: qmgr/qmgr_message.c,
+	local/recipient.c. This must be the cheapest feature.
+
+19980219
+
+	Code cleanup: moved error handling into functions that
+	should always succeed (non_blocking(), close_on_exec()).
+
+19980223
+
+	Bugfix: null pointer bug in the cleanup program after
+	processing a From: header with no mail address (or with
+	only a comment).
+
+19980226
+
+	Robustness: now detects when getpwnam() returns a name that
+	differs from the requested name.
+
+	Feature: Added %p support to the vbuf_print formatting
+	module.
+
+	Code cleanup: revamped the alias/include/.forward loop
+	detection and duplicate suppression code in the local
+	delivery agent. This must be the fourth iteration, and
+	again the code has been simplified.
+
+19980228
+
+	Robustness: don't treat anything starting with whitespace
+	as a header record. Instead, explicitly test for leading
+	whitespace where we permit it. Files: global/is_header.c,
+	bounce/bounce_flush_service.c, local/delivered.c.
+
+19980301
+
+	Compatibility: the sendmail program now accepts the -N
+	command-line option (delivery status notification) but
+	ignores it entirely, just like many other sendmail options.
+
+	Bugfix: dns_lookup.c was too conservative with buffer sizes
+	and would incorrectly report "malformed name server reply".
+
+19980302
+
+	Bugfix: the local delivery agent was not null-byte clean.
+
+19980307
+
+	Feature: integrated Pieter Schoenmaker's code for transport
+	lookup tables that list (transport, nexthop) by destination.
+
+19980309
+
+	Bugfix: delivery agents no longer rename corrupt queue
+	files, because programs might fall over each other doing
+	so. Instead, when a delivery agent detects queue file
+	corruption, it chmods the queue file, simulates a soft
+	error, and lets the queue manager take care of the problem.
+
+	Bugfix: the SMTP server implemented VRFY incorrectly.
+
+	Feature: first shot at a pipe mailer, which can be used to
+	extend VMailer with external mail transports such as UUCP
+	(provided that the remote site understands domain addressing,
+	because VMailer version 1 does not rewrite addresses).
+
+	Cleanup: extended the master/child interface so that the
+	service name (from master.cf) is passed on to the child.
+	The pipe mailer needs the service name so it can look up
+	service-specific configuration parameters (privilege level,
+	recipient limit, time limit, and so on).
+
+19980310-12
+
+	Cleanup: factored out the pipe_command() code, so it can
+	be shared between pipe mailer and local delivery agent.
+
+19980314
+
+	Compatibility: the sendmail program now parses each
+	command-line recipient as if it were an RFC 822 message
+	header; some MUAs specify comma-separated recipients in a
+	command-line argument; and some MUAs even specify "word
+	word <address>" forms as command-line arguments.
+
+19980315
+
+	Bugfix: VMailer's queue processing randomization wasn't
+	adequate for unloaded systems with small backlogs.
+
+	Bugfix: smtpd now uses double-buffered stream I/O to prevent
+	loss of input sent ahead of responses.
+
+19980316
+
+	Bugfix: the smtpd anti-relay code didn't treat all hosts
+	listed in $mydestinations as local, so it would accept mail
+	only for hosts listed in $relay_domains (default: my own
+	domain).
+
+	Bugfix: smtpd now replies with 502 when given an unknown
+	command.
+
+19980318
+
+	Cleanup: resolve/rewrite clients now automatically disconnect
+	after a configurable amount of idle time (ipc_idle).
+
+19980322
+
+	Tolerance: VRFY now permits user@domain, even though the
+	RFC requires that special characters such as @ be escaped.
+
+19980325
+
+	Bugfix: a recipient delimiter of "-" could interfere with
+	special addresses such as owner-xxx or double-bounce.
+
+	Tolerance: the SMTP client now permits blank lines in SMTP
+	server responses.
+
+	Tolerance: the SMTP client now falls back to SMTP when it
+	apparently mistook an SMTP server as ESMTP capable.
+
+	Bugfix: eliminated strtok() calls in favor of mystrtok().
+	Symptom: master.cf parsing would break if $inet_interfaces
+	was more than one word.
+
+19980328
+
+	Bugfix: user->addr patterns in canonical and virtual tables
+	matched only $myorigin, not hosts listed in $mydestination
+	or addresses listed in $inet_interfaces.  The man pages
+	were wrong too. File: global/addr_match.c.
+
+19980401
+
+	Robustness: FIFO file permissions now default to 0622.  On
+	some systems, opening a FIFO read-only could deafen the
+	pickup daemon.  Only the listener end (which is opened as
+	root) needs read access anyway, so there should not be a
+	loss of functionality by making FIFOs non-readable for
+	non-mail processes.
+
+19980402
+
+	Compatibility: sendmail -I and -c options added.
+
+19980403
+
+	Feature: virtual lookups are now recursive. File:
+	qmgr/qmgr_message.c
+
+19980405
+
+	Implemented sendmail -bs (stand-alone) mode. This mode runs
+	as the user and therefore deposits into the maildrop queue.
+
+19980406
+
+	The pickup service now removes malformed maildrop files.
+
+19980407
+
+	The pickup service now guards against maildrop files with
+	time stamps dated into the future.
+
+19980408
+
+	Bugfix: in the canonical and virtual maps, foo->address
+	would match foo@$myorigin only. This has been fixed to also
+	match hosts listed in main.cf:$mydestination and the
+	addresses listed in main.cf:$inet_interfaces.
+
+	Bugfix: added double buffering support to the VMailer SMTP
+	server. This makes the SMTP server robust against SMTP
+	clients that talk ahead of time, and should have been in
+	there from day one.
+
+19980409
+
+	Bugfix: the VMailer SMTP client now recognizes its own
+	hostname in the SMTP greeting banner only when that name
+	appears as the first word on the first line.
+
+19980410
+
+	Feature: smtpd now logs the local queue ID along with the
+	client name/address, and pickup now logs the local queue
+	ID along with the message owner.
+
+	Bugfix: still didn't do virtual/canonical lookups right
+	(code used the non-case-folded key instead of the case
+	folded one).
+
+19980418
+
+	Bugfix: the SMTP server did not flush the "250 OK queued
+	as XXXX" message from the SMTP conversation history.
+
+19980419
+
+	Bugfix: qmgr would not notice that a malformed message has
+	multiple senders, and would leak memory (Tom Ptacek).
+
+19980421
+
+	Portability: in the mantools scripts, the expr pattern no
+	longer has ^ at the beginning, and the scripts now use the
+	expand program instead of my own detab utility.
+
+19980425
+
+	NetBSD 1.x patch by Soren S. Jorvang.
+
+19980511
+
+	Feature: the SMTP server now logs the protocol (SMTP or
+	ESMTP) as part of the Received: header.
+
+	Feature: smtpd now logs the last command when a session is
+	aborted due to timeout, unexpected EOF, or too many client
+	errors.
+
+19980514
+
+	Bugfix: the queue manager did not update the counter for
+	in-core message structures, so the in-core message limit
+	had no effect. This can be bad when you have a large backlog
+	with many messages eligible for delivery.
+
+	Robustness: the queue manager now also limits the total
+	number of in-core recipient structures, so that it won't
+	use excessive amounts of memory on sites that have large
+	mailing lists.
+
+19980518
+
+	Bugfix: the SMTP client did not notice that the DNS client
+	received a truncated response. As a result, a backup MX
+	host could incorrectly claim that it was the best MX host
+	and declare a mailer loop.
+
+	Added start_msg/stop_msg entries to the vmailer startup
+	script, for easy installation.
+
+	Cleanup: VMailer databases are now explicitly specified as
+	type:name, for example, hash:/etc/aliases or nis:mail.aliases,
+	instead of implicitly as "files", "nis" and so on. Test
+	program:  util/dict_open.  This change allowed me to
+	eliminate a lot of redundant code from mkmap_xxx.c, and
+	from everything that does map lookups.
+
+19980525
+
+	Bugfix: local/dotforward.c compared the result of opening
+	a user's ~/.forward against the wrong error value.
+
+19980526
+
+	Bugfix: the smtpd VRFY command could look at free()d memory.
+
+	Robustness: the smtpd program had a fixed limit on the
+	number of token structures.  The code now dynamically
+	allocates token structures.
+
+	Bugfix: the queue manager still used the deprecated parameter
+	name xxx_deliver_concurrency for concurrency control, but
+	the documentation talks about the preferred parameter name
+	xxx_destination_concurrency.  Fix: try xxx_destination_concurrency
+	first, then fall back to xxx_deliver_concurrency.
+
+19980621-19980702
+
+	Cleanup: the string read routines now report the last
+	character read or VSTREAM_EOF. This change is necessary
+	for the implementation of the long SMTP line bugfix.
+
+	Bugfix: the smtp server exited the DATA command prematurely
+	when the client sent long lines. Reason: the smtp server
+	did not remember that it broke long lines, so that '.'
+	could appear to be the first character on a line when in
+	fact it wasn't.
+
+	Bugfix: the queue manager made lots of stupid errors while
+	reading $qmgr_message_recipient_limit chunks of recipients
+	from a queue file. This code has been restructured.
+
+19980706
+
+	Performance: the cleanup program now always adds return-receipt
+	and errors-to records to a queue file, so that the queue
+	manager does not have to plow through huge lists of
+	recipients.
+
+	Robustness: the initial destination concurrency now defaults
+	to 2, so that one bad message or one bad connection does
+	not stop all mail to a site. The configuration parameter
+	is called initial_destination_concurrency.
+
+	Performance: the per-message recipient limit is now enforced
+	by the queue manager instead of by the transport. Thus, a
+	large list of recipients for the same site is now mapped
+	onto several delivery requests which can be handled in
+	parallel, instead of being mapped onto one delivery request
+	that is sent to limited numbers of recipients, one group
+	after the other.
+
+19980707
+
+	Cleanup: the queue manager now does an additional recipient
+	sort after the recipients have been resolved, so that the
+	code can do better aggregation of recipients by next hop
+	destination.
+
+	Feature: lines in the master.cf file can now be continued
+	in the same manner as lines in the main.cf file, i.e. by
+	starting the next line with whitespace.
+
+	Feature: the smtp client now warns that a message may be
+	delivered multiple times when the response to "." is not
+	received (the problem described in RFC 1047).
+
+	Cleanup: when the queue manager changes its little mind
+	after contacting a delivery agent (for example, it decides
+	to skip the host because a transport or host goes bad),
+	the delivery agent no longer complains about premature EOF.
+	File: global/deliver_request.c
+
+19980709
+
+	Bugfix: when breaking long lines, the SMTP client did not
+	escape leading dots in secondary etc. line fragments.  Fix:
+	don't break lines. This change makes VMailer line-length
+	transparent.  Files: global/smtp_stream.c, smtp/smtp_proto.c.
+
+19980712
+
+	Cleanup: the queue manager to deliver agent protocol now
+	distinguishes between domain-specific soft errors and
+	recipient-specific soft errors.  Result: many soft errors
+	with SMTP delivery no longer affect other mail the same
+	domain.
+
+19980713
+
+	Feature: the file modification time stamp of deferred queue
+	files is set to the nearest wakeup time of their recipient
+	hosts, or if delivery was deferred due to a non-host problem,
+	the time stamp is set into the future by the configurable
+	minimal backoff time.
+
+	Bugfix: the SMTP client and the MAILQ command would report
+	as message size the total queue file size. That would
+	grossly overestimate the size of a message with many
+	recipients.
+
+	Bugfix: the 19980709 fix screwed up locally-posted mail
+	that didn't end in newline.
+
+19980714
+
+	Robustness: the makedefs script now defaults to no optimization
+	when compiling for purify.
+
+19980715
+
+	Robustness: the makedefs script now defaults to no optimization
+	when compiling with gcc 2.8, until this compiler is known
+	to be OK.
+
+	Workaround: when sending multiple messages over the same
+	SMTP connection, some SMTP servers need an RSET command
+	before the second etc. MAIL FROM command. The VMailer SMTP
+	client now sends a redundant RSET command just in case.
+
+	The queue manager now logs explicitly when delivery is
+	deferred because of a "dead" message transport.
+
+19980716
+
+	Feature: mailq and mail bounces now finally report why mail
+	was deferred (the reason was logged to the syslog file
+	only).  Changes were made to the bounce service (generalized
+	to be usable for defer logs), showq service (to show reasons)
+	and the queue manager.
+
+	As a result the defer directory (with one log per deferred
+	message) may contain many files; also, this directory is
+	accessed each time a message is let into the active queue,
+	in order to delete its old defer log. This means that hashed
+	directories are now a must.
+
+19980718-20
+
+	Feature: configurable timeout for establishing smtp
+	connections.  Parameter:  smtp_connect_timeout (default 0,
+	which means use the timeout as wired into the kernel).
+	Inspired by code from Lamont Jones. For a clean but far
+	from trivial implementation, see util/timed_connect.c
+
+	Cleaned up the interfaces that implement read/write deadlines.
+	Instead of returning -2, the routines now set errno to
+	ETIMEDOUT; the readable/writable tests are now separate.
+
+19980722
+
+	Feature: the default indexed file type (hash, btree, dbm)
+	is now configurable with the "database_type" parameter.
+	The default value for this parameter is system specific.
+
+	Feature: selectively turn on verbose logging for hosts that
+	match the patterns specified via the "debug_peer_list"
+	config parameter.  Syntax is like the "bad_smtp_clients"
+	parameter (see global/peer_list.c). The verbose logging
+	level is specified with "debug_peer_level" (default 2).
+
+	Security: the local delivery agent no longer delivers to
+	files that have execute permission enabled.
+
+19980723
+
+	Workarounds for Solaris 2.x UNIX-domain sockets: they lose
+	data when you close them immediately after writing to them.
+	This could screw up the delivery agent to queue manager
+	protocol.
+
+19980724
+
+	Cleanup: spent most of the day cleaning up queue manager
+	code that defers mail when a site or transport dies, and
+	fixed a few obscure problems in the process.
+
+19980726
+
+	Feature: the admin can now configure what classes of problems
+	result in mail to the postmaster. Configuration parameter:
+	"notify_classes".  Default is backwards compatible: bounce,
+	policy, protocol, resource, and software.
+
+19980726-28
+
+	Feature: the admin can now configure what smtp server access
+	control restrictions must be applied, and in what order.
+	Configuration parameters:  smtpd_client_restrictions,
+	smtpd_helo_restrictions, smtpd_mail_restrictions and
+	smtpd_rcpt_restrictions. Defaults are intended to be
+	backwards compatible. The bad_senders and bad_clients lists
+	are gone and have become db (dbm, nis, etc) maps. Files:
+	smtpd/smtpd_check.c, config/main.cf.
+
+19980729-31
+
+	Feature: hashed queues. Rewrote parts of the mail queue
+	API.  Configuration parameters: "hash_queue_names" specifies
+	what queue directories will be hashed (default: the defer
+	log directory), "hash_queue_depth" specifies the number of
+	subdirectories used for hashing (default 2).
+
+19980802
+
+	Bugfix: the pipe mailer should expand command-line arguments
+	with $recipient once for every recipient (producing one
+	command-line argument per recipient), instead of replacing
+	$recipient by of all recipients (i.e.  producing only one
+	command-line argument).  This is required for compatibility
+	with programs that expect to be run from sendmail, such as
+	uux. Thanks to Ollivier Robert for helping me to get this
+	right.
+
+	Code cleanup: for the above, cleaned up the macro expansion
+	code in dict.c and factored out the parsing into a separate
+	module, mac_parse.c.
+
+19980803
+
+	"|command" and /file/name destinations in alias databases
+	are now executed with the privileges of the database owner
+	(unless root or vmailer).  Thus, with: "alias_maps =
+	hash:/etc/aliases, hash:/home/majordomo/aliases", and with
+	/home/majordomo/aliases* owned by the majordomo account,
+	you no longer need the majordomo set-uid wrapper program,
+	and you no longer need root privileges in order to install
+	a new mailing list.
+
+19980804
+
+	Added support for the real-time blackhole list.  Example:
+	"client_restrictions = permit_mynetworks, reject_maps_rbl"
+
+	All SMTP server "reject" status codes are now configurable:
+	unknown_client_reject_code, mynetworks_reject_code,
+	invalid_hostname_reject_code, unknown_hostname_reject_code,
+	unknown_address_reject_code, relay_domains_reject_code,
+	access_map_reject_code, maps_rbl_reject_code. Default values
+	are documented in the smtpd/smtpd_check.c man page.
+
+19980806-8
+
+	Code cleanup: after eye balling line-by line diffs, started
+	deleting code that duplicated functionality because it was
+	at the wrong abstraction level (smtp_trouble.c), moved
+	functionality that was in the wrong place (dictionary
+	reference counts in maps.c instead of dict.c), simplified
+	code that was too complex (password-file structure cache)
+	and fixed some code that was just wrong.
+
+19980808
+
+	Robustness: the number of queue manager in-core structures
+	for dead hosts is limited; the limit scales with the limit
+	on the number of in-core recipient structures. The idea is
+	to not run out of memory under conditions of stress.
+
+19980809
+
+	Feature: mail to files and commands can now be restricted
+	by class:  alias, forward file or include file. The default
+	restrictions are:  "allow_mail_to_files = alias, forward"
+	and allow_mail_to_commands = alias, forward". The idea is
+	to protect against buggy mailing list managers that allow
+	intruders to subscribe /file/name or "|command".
+
+19980810-12
+
+	Cleanup: deleted a couple hundred lines of code from the
+	local delivery agent. It will never be a great program;
+	sendmail compatibility is asking a severe toll.
+
+19980814
+
+	Cleanup: made the program shut up about some benign error
+	conditions that were reported by Daniel Eisenbud.
+
+19980814-7
+
+	Documentation: made a start of HTML docs that describe all
+	configuration parameters.
+
+	Feature: while documenting things, added smtpd_helo_required.
+
+19980817
+
+	Bugfix: at startup the queue manager now updates the time
+	stamps of active queue files some time into the future.
+	This eliminates duplicate deliveries after "vmailer reload".
+
+	Bugfix: the local delivery agent now applies the recipient
+	delimiter after looking in the alias database, instead of
+	before.
+
+	Documentation bugfixes by Matt Shibla, Tom Limoncelli,
+	Eilon Gishri.
+
+19980819
+
+	GLIBC fixes from Myrdraal.
+
+	Bugfix: applied showq buffer reallocation workaround in
+	the wrong place.
+
+	Bugfix: can't use shorts in varargs lists. SunOS 4 has
+	short uid_t and gid_t. pipe_command() would complain.
+
+	Bugfix: can't use signed char in ctype macros. All ctype
+	arguments are now casted to unsigned char. Thanks, Casper
+	Dik.
+
+19980820
+
+	Bugfix: save the alias lookup result before looking up the
+	owner.  The previous alpha release did this right.
+
+	Cleanup: mail_trigger() no longer complains when the trigger
+	FIFO or socket is unavailable. This change is necessary to
+	shut up the sendmail mail posting program, so that it can
+	be used on mail clients that mount their maildrop via NFS.
+
+	Experiment: pickup and pipe now run as vmailer most of the
+	time, and switch to user privileges only temporarily.
+	Files: util/set_eugid.c global/pipe_command.c pipe/pipe.c
+	pickup/pickup.c. Is this more secure/ What about someone
+	manipulating such a process while not root? It still has
+	ruid == 0.
+
+19980822
+
+	Portability: with GNU make, commands such as "(false;true)"
+	and "while :; do false; done" don't fail. Workaround: use
+	"set -e" all over the place.  Problem found by Jeff Wolfe.
+
+	Feature: "check_XXX_access maptype:mapname" (XXX = client,
+	helo, sender, recipient). Now you can make recipient and
+	other SPAM restrictions dependent on client or sender access
+	tables lookup results.
+
+19980823
+
+	Bugfix: smtpd access table lookup keys were case sensitive.
+
+	Added "permit" and "reject" operators. These are useful at
+	the end of SPAM restriction lists (smtpd_XXX_restrictions).
+
+	Added a first implementation of the permit_mx_backup SPAM
+	restriction. This permits mail relaying to any domain that
+	lists this mail system as an MX host (including mail for
+	the local machine). Thanks to Ollivier Robert for useful
+	discussions.
+
+19980824
+
+	Bugfix: transport table lookup keys were case sensitive.
+
+19980825
+
+	Portability: sa_len is some ugly #define on some SGI systems,
+	so we must rename identifiers (file util/connect.c).
+
+	Bugfix: uucp delivery errors are now sent to the sender.
+	Thanks, Mark Delany.
+
+	Bugfix: the pipe delivery agent now replaces empty sender
+	by the mailer daemon address. Mark Delany, again.
+
+	Portability: GNU getopt looks at all command-line arguments.
+	Fix: insert -- into the pipe/uucp definition in master.cf.
+
+	Bugfix: the smtp server command tokenizer silently discarded
+	the [] around [text], so that HELO [x.x.x.x] was read as
+	if the client had sent: HELO x.x.x.x. Thanks, Peter Bivesand.
+
+	Bugfix: the HELO unknown hostname/bad hostname restrictions
+	would have treated [text] as a domain name anyway.
+
+	Bugfix: the $local_duplicate_filter_limit value was not
+	picked up by the local delivery agent. This means the local
+	delivery agent could run out of memory on large mailing
+	list deliveries.
+
+19980826
+
+	Performance: mkmap/mkalias now run with the same speed as
+	sendmail. VMailer now uses a 4096-entry cache with 1 Mbyte
+	of memory for DB lookups.  File: util/dict_db.c.
+
+19980902
+
+	Robustness: the reject_unknown_hostname restriction for
+	HELO/EHLO hostnames will now permit names that have an MX
+	record instead of an A record.
+
+19980903
+
+	Feature: appending @$myorigin to an unqualified address is
+	configurable with the boolean append_at_myorigin parameter
+	(default: yes).
+
+	Feature: appending .$mydomain to user@host is configurable
+	with the boolean append_dot_mydomain parameter (default:
+	yes).
+
+	Feature: site!user is rewritten to user@site, under control
+	of the boolean parameter swap_bangpath (default: yes).
+
+	Feature: permit a naked IP address in HELO commands (i.e.
+	an address without the enclosing [] as required by the
+	RFC), by specifying "permit_naked_ip_address" as one of
+	the restrictions in the "smtpd_helo_restrictions" config
+	parameter.
+
+19980904
+
+	Code cleanup: when an SMTP client aborts a session after
+	sending MAIL FROM, the cleanup service no longer warns that
+	it is "skipping further client input". Files: cleanup/*.c.
+	Thanks, Daniel Eisenbud, for prodding.
+
+	Code cleanup: when an SMTP server disconnects in the middle
+	of a session, don't try to send QUIT over the non-existing
+	connection. Files: global/smtp_stream.c, smtp/smtp.c.
+	Thanks, Daniel Eisenbud, for prodding, again.
+
+	Code cleanup: the VMailer version number has moved from
+	mail_params.h (which is included by lots of modules) to a
+	separate file global/mail_version.h, so that a version
+	change no longer results in massive recompilation.
+
+	Bugfix: Errors-To was flagged as a sender address, so the
+	address never was picked up.
+
+	Code cleanup: support for Errors-To: headers completed.
+
+19980905
+
+	Feature: per-message exponential delivery backoff, by
+	looking at the amount of time a message has been queued.
+	Thanks, Mark Delany.
+
+19980906
+
+	Code cleanup: ripped out the per-host exponential backoff
+	code. It was broken by 19980818. It was probably a bad idea
+	anyway, because it required per-host, in-core, state kept
+	by the queue manager.  All we do now is to keep state for
+	$minimal_backoff_time seconds, but only for a limited number
+	of hosts. Daniel Eisenbud spotted the problem.
+
+	Lost feature: the SMTP session transcripts now show who
+	said what. This feature was inadvertently dropped during
+	development. Thanks, Daniel Eisenbud, for reminding.
+
+	Documentation: the hard-coded rewriting process of the
+	trivial-rewrite program is described in html/rewrite.html.
+
+	Feature: the local delivery agent now does alias lookups
+	before and after chopping off the recipient subaddress.
+	This allows you to forward user-anything to another user,
+	without losing the ability to redirect specific user-foo
+	addresses.
+
+19980909
+
+	Feature: the smtp client now logs a warning that a server
+	sends a greeting banner with the client's hostname, which
+	could imply a mailer loop.
+
+19980910
+
+	Feature: separate canonical maps for sender and recipient
+	address rewriting, so that you can rewrite an ugly sender
+	address and still forward mail to that same ugly address
+	without creating a mailer loop.  Files: cleanup_envelope.c,
+	cleanup_message.c, cleanup_rewrite.c.
+
+19980911
+
+	Feature: virtual maps now support multiple addresses on
+	the right-hand side. In the case of virtual domains this
+	can eliminate the need for address expansion via local
+	aliases, making virtual domains much easier to administer.
+	This required that I moved the virtual table lookups from
+	the queue manager to the cleanup service, so that every
+	recipient has an on-disk status record.  Files: qmgr.c,
+	qmgr_message.c, cleanup_envelope.c, cleanup_rewrite.c,
+	cleanup_virtual.c.
+
+	Feature: sendmail/mailq/newaliases pass on the -v flag to
+	the program that they end up running, to make debugging a
+	little easier.
+
+19980914
+
+	Bugfix: some anti-spam measures didn't recognize some
+	addresses as local and would do too much work. File:
+	smtpd_check.c.
+
+	Bugfix: the smtp sender/recipient table lookup restriction
+	destroyed global data, so that other restrictions could
+	break. File: smtpd_check.c.
+
+	Bugfix: after vmailer reload, single-threaded servers could
+	exit before flushing unwritten data to the client. Example:
+	cleanup would exit before acking success to pickup, so the
+	message would be delivered twice. Bug reported by Brian
+	Candler.
+
+	Cleanup: removed spurious error output from vmailer-script.
+	Reported by Brian Candler.
+
+	Tolerance: ignore non-numeric SMTP server responses. There's
+	lot of brain damage out there on the net.
+
+19980915
+
+	Feature: the smtp-sink benchmark tool now announces itself
+	with a neutral name so that it can be run on the same
+	machine as VMailer, without causing Postfix to complain
+	about a mailer loop.
+
+	Robustness: on LINUX, vmailer-script now does chattr +S to
+	force synchronous directory updates. Fix developed with
+	Chris Wedgwood.
+
+19980916
+
+	Bugfix: when transforming an RFC 822 address to external
+	form, there is no need to quote " characters in comments.
+	This didn't break anything, it just looked ugly.  File:
+	global/tok822_parse.c
+
+19980917
+
+	Workaround: with deliveries to /file/name, use fsync() and
+	ftruncate() only on regular files.  File: local/file.c
+
+	Workaround: the plumbing code in master_spawn.c didn't
+	check if it was dup2()/close()ing a descriptor to itself
+	then closing it. Will have to redo the plumbing later.
+
+19980918
+
+	Workaround: on multiprocessor Solaris machines, one-second
+	rollover appears to happen on different CPUs at slightly
+	different times. Made the queue manager more tolerant for
+	such things.  Problem reported by Daniel Eisenbud.
+
+	Workaround: in preparation for deployment with a network-shared
+	maildrop directory. make pickup more tolerant against clock
+	drift between clients and servers.
+
+19980921
+
+	New vstream_popen() module that opens a two-way channel
+	across a socketpair-based pipe. This module isn't being
+	used yet; it is here only to complete the vstream code.
+
+19980922
+
+	Code cleanup: the xxx_server_main() interface for master
+	child processes now uses a name-value argument list instead
+	of an ugly and inflexible data structure.
+
+	Bugfix: moved the test if a non-interactive process is run
+	by hand, so that the "don't do this" error message can be
+	printed to stderr before any significant processing.
+
+	Bugfix: smtpd now can talk to unix-domain sockets without
+	bailing out on a peer lookup problem. Files: smtpd/smtpd.c,
+	util/peer_name.c.
+
+	Safety: by default, the postmaster is no longer informed
+	of protocol problems, policy violations or bounces.
+
+	Safety: the SMTP server now sleeps before sending a [45]xx
+	error response, in order to prevent clients from hammering
+	the server with a connect/error/disconnect loop. Parameter:
+	smtpd_error_sleep_time (default: 5).
+
+	Feature: the logging facility is compile-time configurable
+	(e.g., make makefiles "CCARGS=-DLOG_FACILITY=LOG_LOCAL1").
+
+19980923
+
+	Bugfix: changed virtual/canonical map search order from
+	(user@domain, @domain, user) to (user@domain, user, @domain)
+	so the search order is most specific to least specific.
+	File: global/addr_map.c, lots of documentation.
+
+	Bugfix: after the change of 19980910, cleanup_message
+	extracted recipients from Reply-To: etc. headers.  Found
+	by Lamont Jones.
+
+19980925
+
+	Bugfix: the change in virtual/canonical map search order
+	broke @domain entries; they would never be looked up if
+	the address matched $myorigin or $mydestinations. Found by
+	Chip Christian who now regrets asking for the change.
+
+	Bugfix: cleanup initialized an error mask incorrectly, so
+	that it would keep writing to a file larger than the queue
+	file size limit, and so it would treat the error as a
+	recoverable one instead of sending a bounce. Thanks, Pieter
+	Schoenmakers.
+
+	Bugfix: the "queue file cleanup on fatal error" action was
+	no longer enabled in the sendmail mail posting agent.
+
+	Feature: the sendmail mail posting program now returns
+	EX_UNAVAILABLE when the size of the input exceeds the queue
+	file size limit. NB THIS CHANGE HAS BEEN WITHDRAWN.
+
+19980926
+
+	Code cleanup: the dotlock file locking routine is no longer
+	derived from Eric Allman's 4.3BSD port of mail.local.
+
+	Code cleanup: the retry strategy of the file locking routines
+	dot_lockfile() and deliver_flock() is now configurable
+	(deliver_flock_attempts, deliver_flock_delay, deliver_flock_stale).
+
+	Code cleanup: the master.pid lock file is now created with
+	symlink paranoia, and is properly locked so that PID rollover
+	will not cause false matches.
+
+	Bugfix: the vbuf_print() formatting engine did not know
+	about the '+' format specifier.
+
+	Cleanup: replaced unnecessary instances of stdio calls by
+	vstream ones.
+
+19980929-19981002
+
+	Compatibility: added support for "sendmail -q". This required
+	a change to the queue manager trigger protocol, and a code
+	reorganization of the way queue scans were done. The queue
+	manager socket now has become public.
+
+19981002
+
+	SMTPD now logs "lost connection after end-of-message"
+	instead of "lost connection after DATA".
+
+19981005
+
+	More bullet proofing: timeouts on all triggers.
+
+19981006
+
+	Bugfix: make the number of cleanup processes unlimited, in
+	order to avoid deadlock. The number of instances needed is
+	one per smtp/pickup process, and an indeterminate number
+	per local delivery agent. Thanks, Thanks, David Miller and
+	Terry Lorrah for cleueing me in.
+
+	Bugfix: "sendmail -t" extracted recipients weren't subjected
+	to virtual mapping. Daniel Eisenbud strikes again.
+
+19981007
+
+	Compatibility: if the first input line ends in CRLF, the
+	sendmail posting agent will treat all CRLF as LF. Otherwise,
+	CRLF is left alone. This is a compromise between sendmail
+	compatibility (all lines end in CRLF) and binary transparency
+	(some, but not all, lines contain CRLF).
+
+19981008
+
+	Robustness: stop recursive virtual expansion when the
+	left-hand side appears in its own expansion.
+
+19981009
+
+	Portability: trigger servers such as pickup and qmgr can
+	now use either FIFOs or UNIX-domain sockets; hopefully at
+	least one of them works properly. Trigger clients were
+	already capable of using either form of local IPC.
+
+19981011
+
+	Feature: masquerading. Strip subdomains from domains listed
+	in $masquerade_domains. Exception: envelope recipients are
+	left alone, in order to not screw up routing.
+
+19981015
+
+	Code cleanup: moved the recipient duplicate filter from
+	the user-level sendmail posting agent to the semi-resident
+	cleanup service, so that the filter operates on the output
+	from address canonicalization and of virtual expansion,
+	instead of operating on their inputs.
+
+19981016
+
+	Bugfix: after kill()ing a bunch of child processes, wait()
+	sometimes fails before all children have been reaped, and
+	must be called again, or the master will SIGSEGV later.
+	Problem reported by Scott Cotton.
+
+	Workaround: don't log a complaint when an SMTP client goes
+	away without sending QUIT.
+
+19981018
+
+	Workaround: Solaris 2.5 ioctl SIOCGIFCONF returns a hard
+	error (EINVAL) when the result buffer is not large enough.
+	This can happen on systems with many real or virtual
+	interfaces. File: util/inet_addr_local.c. Problem reported
+	by Scott Cotton.
+
+	Workaround: the optional HELO/EHLO hostname syntax check
+	now allows a single trailing dot.
+
+	Workaround: with UNIX-domain sockets, LINUX connect() blocks
+	until the server calls accept(). File: qmgr/qmgr_transport.c.
+	Terry Lorrah and Scott Cotton provided the necessary
+	evidence.
+
+19981020
+
+	Robustness: recursive canonical mapping terminates when
+	the result stops changing.
+
+	Code cleanup: reorganized the address rewriting and mapping
+	code in the cleanup service, to make it easier to implement
+	the previous enhancement.
+
+19981022
+
+	Code cleanup: more general queue scanning programming
+	interface, in preparation for hashed queues. File:
+	qmgr/qmgr_scan.c.
+
+	Bugfix: a non-FIFO server with a process limit of 1 has a
+	too short listen queue.  Until now this was not a problem
+	because only FIFO servers had a process limit of 1, and
+	FIFOs have no listen queue.  Fix: always configure a listen
+	queue of proc_limit or more.  File: master/master_listen.c.
+
+19981023
+
+	Feature: by popular request, mail delay is logged when
+	delivering, bouncing or deferring mail.
+
+19981024
+
+	Cleanup: double-bounce mail is now absorbed by the queue
+	manager, instead of the local delivery agent, so that the
+	mail system will not go mad when no local delivery agent
+	is configured.
+
+19981025
+
+	Cleanup: moved the relocated table from the local delivery
+	agent to the queue manager, so that the table can also be
+	used for virtual addresses.
+
+	Code reorg: in order for the queue manager to absorb
+	recipients, the queue file has to stay open until all
+	recipients have been assigned to a destination queue.
+
+19981026
+
+	vmlogger command, so that vmailer-script logging becomes
+	consistent with the rest of the VMailer system.
+
+	Code reorg: logger interface now can handle multiple output
+	handlers (e.g. syslog and stderr stream).
+
+	Bugfix: a first line starting with whitespace is no longer
+	treated as an extension of our own Received: header. Files:
+	smtpd/smtpd.c, pickup/pickup.c.
+
+19981027
+
+	Bugfix: the bang-path swapping code went into a loop on an
+	address consisting of just a single !. Eilon Gishri had
+	the privilege of finding this one.
+
+	Workaround: the non-blocking UNIX-domain socket connect is
+	now enabled only on systems that need it. It may cause
+	kernel trouble on Solaris 2.x.
+
+	Bugfix: the resolver didn't implement bangpath swapping,
+	so that mail for site!user@mydomain would be delivered to
+	a local user named "site!user".
+
+19981028
+
+	Cleanup: a VSTREAM can now use different file descriptors
+	for reading and writing. This was necessary to prevent
+	"sendmail -bs" and showq from writing to stdin. Eilon Gishri
+	observed the problem.
+
+19981029
+
+	The RFC 822 address manipulation routines no longer give
+	special attention to 8-bit data. Files: global/tok822_parse.c,
+	global/quote_822_local.c.
+
+	Bugfix: host:port and other non-domain stuff is no longer
+	allowed in mail addresses.  File: qmgr/qmgr_message.c.
+
+	Workaround: LINUX accept() wakes up before the three-way
+	handshake is complete, so it can fail with ECONNRESET.
+	Files: master/single_server.c, master/multi_server.c.
+
+	Feature: when delivering to user+foo, try ~user/.forward+foo
+	before trying ~user/.forward.
+
+	Bugfix: smtpd in "sendmail -bs" (stand-alone) mode didn't
+	clean up when terminated by a signal.
+
+	Bugfix: smtpd in "sendmail -bs" (stand-alone) mode should
+	not try to enforce spam controls because it cannot access
+	the address rewriting machinery.
+
+	Cleanup: the percent hack (user%domain -> user@domain) is
+	now configurable (allow_percent_hack, default: yes).
+
+	Bugfix: daemons in -S (stand-alone) mode didn't change
+	directory to the queue. This was no problem with daemons
+	run by the sendmail compatibility program.
+
+19981030
+
+	Feature: when virtual/canonical/relocated lookup fails for
+	an address that contains the optional recipient delimiter
+	(e.g., user+foo@domain), the search is done again with the
+	unextended address (e.g., user@domain). File: global/addr_find.c.
+
+	Code reorg: the address searching is now implemented by a
+	separate module global/addr_find.c, so that the same code
+	can be used for both (non-mapping) relocated table lookups
+	and for canonical and virtual mapping. The actual mapping
+	is still done in the global/addr_map.c module.
+
+	Robustness: the SMTP client now skips hosts that don't send
+	greeting banner text. File: smtp/smtp_connect.c
+
+	Feature: preliminary support to disable delivered-to. This
+	is desirable for mailing list managers that don't want to
+	advertise internal aliases.
+
+	Generic support: when the recipient_feature_delimiter
+	configuration parameter is set, the local delivery agent
+	uses it to split the recipient localpart into fields. Any
+	field that has a known name such as "nodelivered" enables
+	the corresponding delivery feature.
+
+19981031
+
+	Code reorg: address splitting on recipient delimiter is
+	now centralized in global/split_addr.c, which knows about
+	all reserved names that should never be split.
+
+	Robustness: when a request for an internal service cannot
+	be satisfied because the master has terminated, terminate
+	instead of trying to reach the service every 30 seconds.
+
+	Safety: the local delivery agent now runs as vmailer most
+	of the time, just like pickup and pipe. Files: local/local.c,
+	local/mailbox.c
+
+19981101
+
+	Compatibility: the tokenizer for alias/forward/etc.
+	expansion now updates an optional counter with the number
+	of destinations found; If no destinations is found in a
+	.forward file, deliver to the mailbox instead. Thanks,
+	Daniel Eisenbud, for showing the way to go.
+
+	Robustness: the pickup daemon should always include a
+	posting-time record, even when the sendmail posting agent
+	didn't. However, just like before, user-provided posting
+	times will be ignored. Ollivier Robert found this one.
+
+	Robustness: duplicate entries in aliases or maps now cause
+	a warning instead of a fatal error (and an incomplete file).
+
+	Robustness: mkmap now prints a warning when an entry is in
+	"key: value" format, which is the format expected for alias
+	databases, not for maps.
+
+	Portability: on LINUX, prepend "+" to the getopt() options
+	string so that getopt() will stop at the first non-option
+	argument. Suggestion by Marco d'Itri.
+
+19981103
+
+	Cleaned up the set_eugid() and open_as() implementations,
+	and added stat_as() and fstat_as() so that the local delivery
+	agent would look up include files and .forward files with
+	the right privileges.
+
+19981104
+
+	Bugfix: the :include: routine now stat()s/open()s files
+	included by root-owned aliases as root, not as nobody.
+
+	Bugfix: the master crashed when a service with wakeup timer
+	was disabled or renamed.  Fix: eliminate some pathological
+	coupling between process management and wakeup management.
+
+	Feature: partial implementation of ETRN (causes a full
+	deferred queue scan). Thanks Lamont Jones for reminding me
+	that things can be useful already before they are perfect.
+
+	Cleanup: simplified the SMTPD tokenizer.
+
+	Bugfix: sendmail -bs didn't properly notify the mail system
+	of new mail.
+
+	Compatibility: the MAIL FROM and RCPT TO commands now accept
+	the most common address forms without enclosing <>. The <>
+	is still needed for addresses that contain a "string", an
+	[address], or a colon (:).
+
+19981105
+
+	Bugfix: "master -t" would claim that the master runs when
+	in fact the pid directory does not exist, causing trouble
+	with first time startup (reported by several).
+
+	Portability: added a sane_accept() module that maps all
+	beneficial accept() error results to EAGAIN. According to
+	private communication with Alan Cox, Linux 2.0.x accept()
+	can return a variety of error conditions, so we play safe
+	and allow for any error that may happen because SYN+ACK
+	could not be sent.
+
+	Portability: NETBSD1 uses dotlock files (Perry Metzger).
+
+	Bugfix: the local delivery agent did not canonicalize
+	owner-foo sender addresses, so that local users would see
+	owner-foo instead of owner-foo@$myorigin (Perry Metzger).
+
+	OPENSTEP4 support, similar to NEXTSTEP3 (Gerben Wierda).
+
+19981106
+
+	Portability: the master startup would take a long time on
+	AIX because AIX has a very large per-process open file
+	limit.  Fix is to check the status of only the first couple
+	hundred file descriptors instead. File: master/master.c.
+
+	Bugfix: mail to user@[net.work.addr.ess] was broken because
+	of a reversed test. File: qmgr/qmgr_message.c.
+
+19981107
+
+	Compatibility: don't clobber the envelope sender address
+	when an alias has no owner-foo alias (problem diagnosed by
+	Christophe Kalt).
+
+	Bugfix: mail to local users in include files would be
+	delivered directly if the alias didn't have an owner-foo
+	alias, and if the alias database and include file were
+	owned by root.
+
+	Feature: with user+foo addresses, any +foo address extension
+	that is not explicitly matched in canonical, virtual or
+	alias databases is propagated to the table lookup result.
+
+19981108
+
+	Bugfix: minor memory leak in the user+foo table lookup
+	code.
+
+	Configurability: specify virtual.domain in the virtual map,
+	and mail for unknown@virtual.domain will bounce automatically.
+	The $relay_domains default value now includes $virtual_maps,
+	so the SMTP server will accept mail for the domain. Marco
+	d'Itri put me on the right track.
+
+	Configurability: The mydestinations configuration parameter
+	now accepts /file/name expressions and type:name lookup
+	tables.
+
+	Code cleanup: in order to make the previous two enhancements
+	possible, revised the string/host/address matching engine
+	so it can handle any mixture of strings, /file/name patterns
+	and type:name lookup tables. Files: util/match_{list,ops}.c,
+	global/{domain,namadr,string}_list.c.
+
+19981110
+
+	Code cleanup: replaced remaining isxxx() calls by ISXXX().
+
+19981111
+
+	Bugfix: the "bounce unknown virtual user" code was in the
+	wrong place. Problem tackled with help of Chip Christian.
+
+	Portability: reportedly, Solaris 2.5.1 can hang waiting
+	for a UNIX-domain connection to be accepted, so it gets
+	the same workaround that was designed for LINUX. Problem
+	reported by Scott Cotton.
+
+19981112
+
+	Management: "vmailer stop" now allows delivery agents to
+	finish what they are doing, like "vmailer reload".
+
+	Management; "vmailer abort" causes immediate termination.
+
+	Workaround: zombie processes pile up with HP-UX. Reason:
+	select() does not return upon SIGCHLD when SA_RESTART is
+	specified to sigaction(). Workaround: shorten the select()
+	timer to 10 seconds, #ifdef BRAINDEAD_SELECT_RESTARTS.
+	Thanks, Lamont Jones.
+
+19981117
+
+	Rename: VMailer is now Postfix. Sigh.
+
+19981118
+
+	Cleanup: generalized the safe_open() routine so that it is
+	no longer limited to mailbox files, lock files, etc.
+
+	Bugfix (found during code review): vstream*printf() could
+	run off the end of a stream buffer after an I/O error,
+	because vbuf_print() ignored the result from VBUF_SPACE().
+
+	Bugfix (found during code review): resolve_local() could
+	clobber its argument, but the docs didn't say so.
+
+19981121
+
+	Cleanup: the is_header() routine now allows 8-bit data in
+	header labels.
+
+19981123
+
+	Bugfix (found during code review): the mail_queue_enter()
+	path argument wasn't optional.  File: global/mail_queue.c
+
+19981124
+
+	Cleanup: eliminated redundant tests for a zero result from
+	vstream_fdopen(). Unlike the stdio fdopen() routine, the
+	vstream_fdopen() routine either succeeds or never returns.
+
+	Bugfix: the queue manager now looks at the clock before
+	examining a file time stamp, to avoid spurious complaints
+	about time warps on busy machines. File:  qmgr/qmgr_active.c.
+
+19981125
+
+	Compatibility: allow trailing dot at the end of user@domain.
+	Address canonicalization now strips it off. Issue brought
+	forward by Eilon Gishri. File: trivial-rewrite/rewrite.c.
+
+	Robustness: changed DNS lookup order of MAIL FROM etc.
+	domains from MX then A to A then MX, just in case the MX
+	lookup fails with a server error.
+
+	Renamed vmcat, vmlock, vmlogger, vmtrigger to postcat,
+	postlock, postlog, postkick. Also renamed mkmap and mkalias
+	to postmap and postalias.
+
+19981126
+
+	Workaround: Lamont Jones found a way for HP-UX to terminate
+	select() after SIGCHLD. The code is #ifdef USE_SIG_RETURN.
+	Files:  util/sys_defs.h, master/master_sig.c.
+
+	Bugfix: the Delivered-To: loop detection code had stopped
+	working, when long ago the is_header() routine was changed.
+	File: local/delivered.c.
+
+19981128
+
+	Bugfix: postcat opened queue files read-write, where only
+	read access was needed. File: postcat/postcat.c.
+
+19981129
+
+	Safety: added a sleep(1) to all fatal and panic exits.
+	File: util/msg.c.
+
+19981201
+
+	Robustness: postcat now insists that a file starts with a
+	time record.
+
+	Consistency: added "-c config_dir" command-line options
+	where appropriate.
+
+19981202
+
+	Man pages, on-line version.
+
+19981203
+
+	Man pages, html version; overview documentation.
+
+19981206
+
+	Sendmail silently accepted the unsupported -qRsite and
+	-qSsite options.  It now prints an error message and
+	terminates.
+
+	Separated the contributed tree from the IBM code; moved
+	the LDAP and NEXTSTEP/OPENSTEP code to the contributed
+	source tree because obviously I didn't write it.
+
+19981206-9
+
+	Had to write a postconf configuration utility in order to
+	reliably find out about all configuration parameters and
+	their defaults.
+
+	Documentation bugfixes by Matt Shibla, Scott Drassinower,
+	Greg A. Woods.
+
+19981209
+
+	On machines with short hostnames, postconf -d cored while
+	reporting a fatal error. It should not report that error
+	in the first place. Thanks, Eilon Gishri.
+
+	Changed the FAQ entry about rejecting mail for *.my.domain
+	on a firewall. Chip Christian was right, I was wrong.
+
+19981214
+
+	Portability: with GNU getopt, optind is not initially 1,
+	breaking an assumption in sendmail/sendmail.c. Liviu Daia.
+
+	Annoyance: on non-networked systems, don't warn that only
+	one network interface was found. File:  global/inet_addr_local.c.
+	Reported by several.
+
+	Bugfix: on non-networked systems, the smtp client assumed
+	that it was running in virtual host mode, and would bind
+	to the loopback interface. File smtp/smtp_connect.c.  Liviu
+	Daia, again.
+
+19981220
+
+	Robustness: when looking up an A or MX record, do not give
+	up when the A query fails because of a server error.  File
+	dns/dns_lookup.c. Reported by Scott Drassinower.
+
+19981221
+
+	Bugfix: "bounce mail for non-existent virtual user" didn't
+	work when a non-default relay host was configured in main.cf
+	or in the transport table. File: qmgr/qmgr_message.c.
+
+	Bugfix: the maildrop directory should not be world-readable.
+	Files: conf/postfix-script, showq/showq.c.
+
+	Documentation: fixed several omissions and errors.
+
+	Documentation: removed references to the broken recipient
+	feature delimiter configuration parameter.
+
+	Bugfix: write mailbox file as the recipient, so that file
+	quota work as expected.
+
+	Bugfix: pickup would die when it tried to remove a non-file
+	in the maildrop directory (Jeff Wolfe).
+
+19981222
+
+	Sendmail no longer logs the queue ID when it is unable to
+	notify the pickup daemon. This is a late addition to the
+	"unreadable maildrop queue" patch.
+
+	user.lock files are now created as root, so that postfix
+	needs no group directory write permission.
+
+19981224
+
+	Security: allow queue file link counts > 1, to avoid
+	non-delivery of maildrop files with links to a non-maildrop
+	directory.  Files:  global/mail_open_ok.c, and anything
+	that calls this code (qmgr, pickup, showq). If multiple
+	hard links are a problem, see the set-gid "postdrop" utility
+	below.
+
+19981225
+
+	Robustness: the queue manager no longer aborts when a queue
+	file suddenly disappears (e.g. because the file was removed
+	by hand).
+
+	Feature: when a writable maildrop directory is a problem,
+	sites can make the new "postdrop" utility set-gid. This
+	command is never used when the maildrop directory is
+	world-writable.
+
+	Robustness: make the queue file creation routine more
+	resistant against denial of service race attack. File:
+	global/mail_queue.c
+
+19981226
+
+	New suid_priv module to enable/disable privileges in a
+	set-uid/gid program. In the end I decided to not use it.
+
+19981228
+
+	Robustness: make the pickup daemon more resistant against
+	non-file race attack.
+
+	Cleanup: generic mail_stream.c interface for writing queue
+	file streams to files, daemons or commands. This simplifies
+	the code in smtpd and in sendmail that must be able to pipe
+	mail through the postdrop command. The cleanup daemon has
+	been modified to use the same interface. Result: less code.
+
+	Feature: smtpd now logs the only recipient in Received:
+	headers.
+
+	Feature: separate command and daemon directories. Both
+	default to $program_directory. Install conf/postfix-script
+	if you want to use this feature.
+
+19981230
+
+	Patch to avoid conflict with non-writable top-level Makefile
+	(Lamont Jones).
+
+19981231
+
+	Portability: port to UnixWare 7 by Ronald Joe Record, SCO.
+
+19990104
+
+	Bugfix: fencepost (Jon Ribbens, Oaktree Internet Solutions
+	Ltd.) Files: quote_82[12]_local.c.
+
+	Bugfix: wrong default for relay_domains (Juergen Kirschbaum,
+	Bayerische Landesbank). File: mail_params.h.
+
+	Bugfix: changed 5xx response for "too may recipients" to
+	4xx. File: smtpd.c.
+
+19990106
+
+	Feature: defer_transports specifies the names of transports
+	that should be used only when "sendmail -q" (or equivalent)
+	is issued. For example, "defer_transports = smtp" is useful
+	for sites that are disconnected most of the time. File:
+	qmgr_message.c.
+
+19990107
+
+	Feature: local_command_shell specifies a non-default shell
+	for delivery to command by the local delivery agent. For
+	example, "local_command_shell = /some/where/smrsh -c"
+	restricts what may appear in "|command" destinations.
+	File: global/pipe_command.c.
+
+19990112-16
+
+	Feature: SMTP command pipelining support based on an initial
+	version by Jon Ribbens, Oaktree Internet Solutions Ltd.
+	This one took several days of massaging before I felt
+	comfortable about it. Files: smtp.c, smtp_proto.c.
+
+	Bugfix: the SMTP server would flush responses one-by-one,
+	which caused suboptimal performance with pipelined clients.
+	The vstream routines now flush the write buffer when the
+	read() routine is called, instead of flushing when the
+	application changes from writing to reading. Delayed flush
+	prevents the SMTP server from flushing responses one-by-one
+	and thus triggering Nagle's algorithm. File: util/vstream.c.
+
+19990117
+
+	Bugfixes and enhancements to the smtpstone tools by Drew
+	Derbyshire, Kendra Electronic Wonderworks: send helo command,
+	send message headers, format the message content to lines
+	< 80, work around NT stacks, make "." recognition more
+	robust. Files: smtp-source.c, smtp-sink.c.
+
+	Strategy: look at the deferred queue only when the incoming
+	queue is empty; limit the number of recipients read from
+	a queue file depending on the number of recipients already
+	in core. Files: qmgr.c, qmgr_message.c.
+
+	Feature: postponed anti-UCE restrictions. The decision to
+	reject junk mail on the basis of the client name/address,
+	HELO hostname or sender address can now be postponed until
+	the RCPT TO command (or HELO or MAIL FROM if you like).
+	File: smtpd_check.c.
+
+19990118
+
+	Feature: incremental updates of alias databases and of
+	other lookup tables. Both postalias and postmap now take
+	a -i option for incremental updates from standard input.
+	Files: global/mkmap_*.c, post{map,alias}/post{map,alias}.c.
+
+	Compatibility: newaliases can now update multiple alias
+	databases: list them in the "alias_database" parameter in
+	main.cf. By the same token, postalias can now update multiple
+	maps in one command. Files:  post{map,alias}/post{map,alias}.c
+
+	Feature: mail to <> is now sent to the address specified
+	with the "empty_address_recipient" configuration parameter
+	which defaults to MAILER-DAEMON (idea by Lamont Jones,
+	Hewlett-Packard). File: cleanup/cleanup_envelope.c.
+
+	Compatibility: the transport table now uses .domain.name
+	to match subdomains, just like sendmail mailer tables (patch
+	by Lamont Jones, Hewlett-Packard).
+
+	Feature: mailq now ends with a total queue size summary
+	(Eilon Gishri, Israel Inter University Computation Center).
+
+19990119
+
+	Feature: address masquerade exceptions for user names listed
+	in the "masquerade_exceptions" configuration parameter.
+	File: cleanup/cleanup_masquerade.c.
+
+	Feature: qmail-style maildir support, based on initial code
+	by Kevin W. Brown, Quantum Internet Services Inc.
+
+	Workaround: Solaris 2.something connect() fails with
+	ECONNREFUSED when the system is busy (Chris Cappuccio,
+	Empire Net). File: global/mail_connect.c.
+
+	Feature: the cleanup service now adds a Return-Path: header
+	when none is present. This header is needed for some mail
+	delivery programs (see below). File: cleanup_message.c.
+
+	Feature: the pipe mailer now supports $user, $extension
+	and $mailbox macros in command-line expansions. This, plus
+	the Return-Path: header (see above), should be sufficient
+	to support cyrus IMAP out of the box. Based on  initial
+	code by Joerg Henne, Cogito Informationssysteme GMBH.
+	File: pipe/pipe.c.
+
+	Bugfix: with address extensions enabled, canonical and
+	virtual lookups now are done in the proper order:
+	user+foo@domain, user@domain, user+foo, user, @domain.
+	File: global/mail_addr_find.c.
+
+19990119
+
+	Feature: the local mailer now prepends a Received: message
+	header with the queue ID to forwarded mail, in order to
+	make message tracing easier.  File: local/forward.c.
+
+	Cleanup: after "postfix reload", no more broken pipe
+	complaints from resolve/rewrite clients.
+
+19990121
+
+	Feature: pickup (again) logs uid and sender address.  On
+	repeated request by Scott Cotton, Internet Consultants
+	Group, Inc.
+
+	Portability: doze() function for systems without usleep().
+
+	Cleanup: clients are now consistently logged as host[address].
+
+19990122
+
+	Maildir support changed: specify "home_mailbox = Maildir/".
+	The magic is the trailing /. Suggested by Daniel Eisenbud,
+	University of California at Berkeley.
+
+	Maildir support from aliases, :include: and .forward files.
+	Specify /file/name/ - the trailing / is required. Suggested
+	by Daniel Eisenbud, University of California at Berkeley.
+
+	Workaround: watchdog timer to prevent the queue manager
+	from locking up on some systems.
+
+	Bugfix: in Received: headers, the "for <recipient>"
+	information was in the wrong place. Pointed out by Jon
+	Ribbens, Oaktree Internet Solutions Ltd.
+
+19990124
+
+	Portability: more workarounds for GNU getopt() by Liviu
+	Daia, Institute of Mathematics, Romanian Academy. File:
+	sendmail/sendmail.c.
+
+19990125
+
+	Bugfix: Postfix should not masquerade recipient addresses
+	extracted from message headers. Problem reported by David
+	Blacka, Network Solutions. File: cleanup/cleanup_message.c.
+
+19990126
+
+	Feature: smtpd_etrn_restrictions parameter to restrict who
+	may use ETRN and what domains may be specified.  Example:
+	"smtpd_etrn_restrictions = permit_mynetworks, reject".
+	Requested by Jon Ribbens, Oaktree Internet Solutions Ltd.
+	File: smtpd/smtpd_check.c.
+
+19990127
+
+	Bugfix: in an attempt to shave some cycles, the anti junk
+	mail routines would use the wrong resolved address. This
+	"optimization" is now turned off. Problem reported by Sam
+	Eaton, Pavilion Internet Plc. File: smtpd/smtpd_check.c.
+
+	Feature: BIFF notifications.  For compatibility reasons
+	this feature is on by default.  This "protocol" can be a
+	real performance pig.  Specify "biff = no" in main.cf if
+	your machine has lots of shell users. Feature requested by
+	Dan Farmer - it's one of the things one does for friends.
+	Files:  local/mailbox.c, local/biff_notify.c.
+
+	Bugfix: another case sensitivity problem, this time with
+	virtual lookups to recognize unknown@virtual.domain.
+	Problem reported by Bo Kleve, Linkoping University. File:
+	qmgr/qmgr_message.c.
+
+19990128
+
+	Feature: with "soft_bounce = yes", defer delivery instead
+	of bouncing mail. This is a safety net for configuration
+	errors with delivery agents. It has no effect on errors in
+	virtual maps, canonical maps, or in junk mail restrictions.
+	Feature requested by Bennett Todd. File: global/bounce.c.
+
+19990129
+
+	Compatibility: the qmail maildir.5 documentation prescribes
+	maildir file names of the form time.pid.hostname, which is
+	wrong because Postfix processes perform multiple deliveries.
+	Elsewhere the qmail author has documented how maildir files
+	should be named under such conditions. Postfix has been
+	changed to be conformant. File: local/maildir.c.
+
+19990131
+
+	Feature: special treatment of owner-foo and foo-request
+	can be turned off. Specify "owner_request_special = no".
+	Requested by Matthew Green and others. Files: local/alias.c,
+	global/split_addr.c. This affects canonical, virtual and
+	alias lookups.
+
+19990204
+
+	Portability: signal handling for HP-UX 9 by Lamont Jones
+	of Hewlett Packard. File: master/master_sig.c.
+
+	Robustness: disable random walk inside a per-site queue to
+	avoid message starvation under heavy load. File: qmgr_entry.c.
+
+	Robustness: under some conditions the queue manager could
+	declare a host dead after just one delivery failure.  File:
+	qmgr_queue.c.
+
+19990212
+
+	Feature: skip SMTP servers that greet us with a 4XX status
+	code. Example: "smtp_skip_4xx_greeting = yes". By default,
+	the Postfix SMTP client defers delivery when a server
+	declines talking to us. File:  smtp/smtp_connect.c.
+
+	Robustness: upon startup the queue manager now moves active
+	queue files to the incoming queue instead of the deferred
+	queue, to avoid anomalous delivery delays on systems that
+	have a huge incoming queue.  Files: qmgr/qmgr.c,
+	qmgr/qmgr_active.c, global/mail_flush.c, conf/postfix-script*
+
+19990213
+
+	Robustness: added watchdog timers to avoid getting stuck
+	on systems with broken select() socket implementations.
+	File: qmgr_transport.c, qmgr_deliver.c.
+
+19990218
+
+	Feature: NFS-friendly delivery to mailbox by avoiding the
+	use of root privileges as much as possible. With input by
+	Mike Muus, Army Research Lab, USA.
+
+	Feature: the smtp-sink test server now supports SMTP command
+	pipelining. To this end we had to generalize the timer and
+	vstream support. Poor performance is fixed 19990222.
+
+	Cleanup: timer event routines now have the same interface
+	as read/write event routines (event type + context). File:
+	util/events.c.
+
+	Feature: new vstream_peek() routine to tell how much unread
+	data is left in a VSTREAM buffer. This is the vstream
+	variant of the peekfd() routine for kernel read buffers.
+	File: util/vstream.c.
+
+	Feature: directory scanning support for hashed mail queue
+	directories. So far the results are disappointing: with
+	depth = 2 (16 directories with 16 subdirectories), mailq
+	takes 5 seconds with an empty queue unless all directories
+	happen to be cached in memory.  We need a bit map before
+	hashed queue directories become practical. Depth=1 hashing
+	doesn't slow down mailq much, but doesn't help much either.
+	Files: util/scan_dir.c, global/mail_scan_dir.c.
+
+19990221
+
+	Workaround: with "ignore_mx_lookup_error = yes", the SMTP
+	client always performs an A lookup when an MX lookup could
+	not be completed, rather than treating MX lookup failure
+	as a temporary error condition.  Unfortunately there are
+	many broken DNS servers on the Internet. File: smtp/smtp_addr.c.
+
+19990222
+
+	Performance: rewrote the guts of the smtp-sink test server
+	so it can do pipelining without losing performance.
+
+19990223
+
+	Workaround: hotmail.com sometimes drops the connection
+	after "." (causing misleading diagnostics to be logged) or
+	waits minutes after receiving QUIT. Solution: do not wait
+	for the response to QUIT. File: smtp/smtp_proto.c.  This
+	is turned off with: "smtp_skip_quit_response = no".
+
+19990224
+
+	Feature: the pipe mailer accepts user=username:groupname,
+	based on code submitted by Philip A. Prindeville, Mirapoint,
+	Inc., USA.  File: pipe/pipe.c.
+
+	Workaround: use file locking to prevent multiple processes
+	from select()ing on the same socket. This causes performance
+	problems on large BSD systems. Files: master/*_server.c.
+
+19990225
+
+	Bugfix: with "inet_interfaces = 127.0.0.1", don't bind to
+	the loopback interface. Problem reported by Steve Bellovin
+	of AT&T. File: smtp/smtp_addr.c.
+
+	Feature: "postsuper" command to remove stale queue files
+	to update queues after changes to the queue structure
+	parameters (hash_queue_names, hash_queue_depth). This
+	command is to be run from the postfix-script maintenance
+	shell script.
+
+19990301
+
+	Feature: new postconf -h (suppress `name = ' in output)
+	option to make the program easier to use in, e.g., shell
+	scripts.
+
+	Feature: dict_unix module so you can add the UNIX passwd
+	table to the SMTPD access control list.
+
+19990302
+
+	Feature: "luser_relay = destination" captures mail for
+	non-existent local recipients. This works only when the
+	local delivery agent does mailbox delivery (including
+	delivery via mailbox_command), not when mailbox delivery
+	is delegated to another message transport.
+
+	Feature: new reject_non_fqdn_{hostname,sender,recipient}
+	restrictions to require fully.qualified.domain forms in
+	HELO, MAIL FROM and RCPT TO commands (while still allowing
+	the <> sender address).
+
+19990304
+
+	Bugfix: backed out the 19990119 change to always insert
+	Return-Path:  if that header is not present. The pipe and
+	local agents now are responsible for prepending Return-Path:.
+	Files:  cleanup/cleanup_message.c, global/mail_copy.[hc],
+	pipe/pipe.c, global/header_opts.c.  This causes an incompatible
+	change to the pipe flags parameter, because Return-Path:
+	now must be requested explicitly.
+
+19990305
+
+	Bugfix: showq (the mailq server) incorrectly assumed that
+	all recipients of a deferred message are listed in the
+	corresponding defer logfile. It now lists all recipients.
+	Files: showq/showq.c, cleanup/cleanup_envelope.c (ensure
+	that sender records always precede recipient records).
+
+	Cleanup: smtpd HELO restrictions validate [numerical] forms.
+	Files: util/valid_hostname.c, smtpd/smtpd_check.c.  Initial
+	code by Philip A. Prindeville, Mirapoint, Inc., USA.
+
+19990306
+
+	Cleanup: re-vamped the valid_hostname module, and added a
+	maximal label length (63) requirement.
+
+	Feature: fallback_relay parameter to specify extra backup
+	hosts in case the regular relay hosts are not found or not
+	available.  Files:  smtp/smtp_addr.c.
+
+	Feature: "always_bcc = address" specifies where to send a
+	copy of each message that enters he system. However, if
+	that copy bounces, the sender will be informed of the
+	bounce. Files: smtpd/smtpd.c, pickup/pickup.c
+
+	Compatibility: the transport map will now route on top-level
+	domains, so you can dump all of .bitnet to a bitnet relay.
+
+19990307
+
+	Feature: LDAP lookups, updated by Jon Hensley, Merit Network,
+	USA.
+
+	Feature: regular expression (PCRE) support by Andrew
+	McNamara, connect.com.au Pty. Ltd., Australia. In order to
+	use this code specify pcre:/file/name. You can use this
+	anywhere you would use a DB or DBM file, NIS or LDAP.  See:
+	PCRE_README for how to enable this code.
+
+	Feature: "delay_warning_time = 4" causes Postfix to send
+	a "your mail is delayed" notice after approx. 4 hours.
+	Daniel Eisenbud, University of California at Berkeley.
+	Files:  qmgr/qmgr_active.c, qmgr/qmgr_message. Postmaster
+	notices for delayed mail are disabled by default. In order
+	to receive postmaster notices, specify "notify_classes =
+	...  delay ...".
+
+	Cleanup: do not send undeliverable bounced mail to postmaster.
+	This was causing lots of pain with junk mail from bogus
+	sender addresses to non-existent recipients.  This change
+	was reversed 19990311.
+
+19990308
+
+	Bugfix: the dotforward routine was too eager with throwing
+	away extension information, so that the Delivered-To: info
+	would differ for \mailbox and |command. Problem reported
+	by Rafi Sadowski, Open University, Israel.
+
+	Bugfix: seems I never got around to fix the btree access
+	method. I finally did. Problem reported by: Matt Smith,
+	AvTel Communications Inc., USA.
+
+19990311
+
+	Back by popular demand: with "notify_classes = 2bounce ..."
+	Postfix will send undeliverable bounced mail to postmaster.
+	The default is to not send double bounces.  This change
+	reverses a change made on 19990307.
+
+19990312
+
+	Feature: configurable exit handler for server skeletons.
+	Philip A.  Prindeville, Mirapoint, Inc., USA. Files:
+	master/*server.c.
+
+	Feature: mail_spool_directory configuration parameter to
+	specify the UNIX mail spool directory.  The default setting
+	is system dependent.
+
+19990313
+
+	Cleanup: share file descriptors for resolve and rewrite
+	client connections. This puts less strain on the trivial-rewrite
+	service.
+
+	Portability: support for UnixWare 2.1 by Dmitry E. Kiselyov,
+	Nizhny Novgorod City Health Emergency Station.
+
+	Feature: configurable delays in the smtpstone test programs.
+	With input by Philip A.  Prindeville, Mirapoint, Inc., USA.
+	Files:  smtpstone/*.c.
+
+	Bugfix: a "signal 11" problem in the trivial-rewrite program
+	that would occasionally happen after "postfix reload".
+	Reason: some rewrite clients would clobber their input,
+	and when they had to retransmit the query, the input would
+	be a zero-length string, which trivial-rewrite isn't supposed
+	to receive.
+
+19990314
+
+	Feature: "mailbox_transport = cyrus" delegates all local
+	mailbox delivery to a master.cf entry called "cyrus" (the
+	same trick for procmail), including users not found in the
+	UNIX passwd database.  This gives the flexibility of $name
+	expansions by the pipe mailer, without losing local aliases
+	and ~/.forward processing.  Result of discussions with Rupa
+	Schomaker, RS Consulting.
+
+19990315
+
+	Feature: the mydestination parameter can now be an empty
+	string, for hosts that don't receive any mail locally. Be
+	sure to specify a default route for mail that comes to the
+	machine or mail will loop.
+
+19990316
+
+	Bugfix: the SMTPD check scaffolding didn't apply the same
+	sanity checks as the production code. Problem reported by
+	Alain Thivillon, Herve Schauer Consultants, France. File:
+	smtpd/smtpd_check.c.
+
+	Portability: some systems can have more than 59 seconds in
+	a minute. Based on a fix by Liviu Daia, Institute of
+	Mathematics, Romanian Academy.  File:  global/mail_date.c.
+
+	Enhancement: include the client network address in the
+	rejected by RBL response. Lamont Jones, Hewlett-Packard.
+
+	Workaround: use fstat() to figure out if the maildrop is
+	world-writable. access() uses the real uid, which stinks.
+
+	Robustness: don't do partial address lookups (user@, domain,
+	user, @domain) with regexp-style tables.
+
+	Security: don't allow regexp-style tables to be used for
+	aliases. It would be too easy to slip in "|command" or
+	:include: or /file/name.
+
+19990317
+
+	Feature: "fallback_transport = cyrus" delegates non-UNIX
+	recipients to a master.cf entry called "cyrus", allowing
+	you to have both UNIX and non-UNIX mailboxes side by side.
+
+19990319
+
+	Workaround: on 4.4 BSD derivatives, fstat() can return
+	EBADF on an open file descriptor. Now, that was a surprise.
+	This caused std{out,err} from cron commands to not be
+	delivered.
+
+	Bugfix: "local -v" stopped working.
+
+	Workaround: more watchdog timers for postfix-unfriendly
+	systems. By now every Postfix daemon has one. Call it life
+	insurance.
+
+	Robustness: increased the maximal time to receive or deliver
+	mail from $ipc_timeout (default: 3600 seconds) to the more
+	generous $daemon_timeout (default: 18000 seconds). We don't
+	want false alarms.
+
+	Portability: IRIX 5.2 does not have usleep().
+
+19990320
+
+	Bugfix: \username was broken. Frank Dziuba was the first
+	to notice.
+
+19990321
+
+	Workaround: from now on, Postfix on Solaris uses stream
+	pipes instead of UNIX-domain sockets. Despite workarounds,
+	the latter were causing more trouble than anything else on
+	all systems combined.
+
+19990322
+
+	Portability: the makedefs would mis-identify IRIX 6.5.x as
+	IRIX 5.x. Fix by Brian Truelsen of Maersk Mc-Kinney Moller
+	Institute for Production Technology, Denmark.
+
+	Feature: reject_unknown_recipient_domain restriction for
+	recipient addresses. For the sake of symmetry, we now also
+	have reject_unknown_sender_domain. This means the old
+	reject_unknown_address restriction is being phased out.
+	Suggested by Rask Ingemann Lambertsen, Denmark Technical
+	University.
+
+	Feature: unknown sender/recipient domain restrictions now
+	distinguish between soft errors (always: 450) and hard
+	errors (configurable with the unknown_address_reject_code
+	parameter, default: 450; use 550 at your own risk).
+
+	Feature: no HELO junk mail restrictions means that no syntax
+	check will be done on HELO/EHLO hostname arguments.
+
+	Bugfix: the initial Solaris workaround for UNIX-domain
+	sockets could cause the queue manager to block if Postfix
+	ran into a delivery agent process limit. After another code
+	rewrite that problem is eliminated.  Thanks to Chris
+	Cappuccio, Empire Net, for assistance with testing.
+
+19990323
+
+	Bugfix: too much forwarding when users list their own name
+	in their .forward file (e.g. mail to user@localhost would
+	go through .forward, would be forwarded to user@$myorigin,
+	and would go through .forward again). Problem reported by
+	Roman Dolejsi, Prague University of Economics.
+
+19990324
+
+	Bugfix: missing map name in check_xxx_access restrictions
+	could cause a segmentation error. Lamont Jones, Hewlett-
+	Packard.
+
+	Feature: forward_path configuration parameter (default:
+	$home/.forward$recipient_delimiter$extension,$home/.forward).
+	Based on initial code by Philip A.  Prindeville, Mirapoint,
+	Inc., USA.  Files:  local/dotforward.c.
+
+19990325
+
+	Workaround: Solaris NIS alias maps need special entries
+	(YP_MASTER_NAME, YP_LAST_MODIFIED). What's worse, normal
+	keys/values include a null byte at the end, but the YP_XXX
+	ones don't. Problem reported by Walcir Fontanini, state
+	university of Campinas, Brazil.  File: postalias/postalias.c.
+
+	Compatibility: Solaris NIS apparently does include a null
+	byte at the end of keys and values. File: util/sys_defs.h.
+
+	Feature: library support for config parameters that are
+	not $name expanded at program start-up. This was needed
+	for forward_path, and will also be needed to make message
+	headers customizable.
+
+	Bugfix: pcre didn't handle \\ right. Lamont Jones, Hewlett-
+	Packard. File: util/dict_pcre.c.
+
+19990326
+
+	Compatibility: Postfix now puts two spaces after the sender
+	in a "From sender date..." header. Found by John A. Martin,
+	fixed by Lamont Jones, Hewlett-Packard.
+
+	Bugfix: when a recipient appeared multiple times in a local
+	alias or include expansion, the delivery status could be
+	left uninitialized, causing the mail to be deferred and
+	delivered again. File: local/recipient.c.
+
+19990327
+
+	Cleanup: the dictionary routines now take an extra flag
+	argument to control such things as warning about duplicates,
+	and appending null bytes to key/value. The latter was needed
+	for a clean implementation of NIS master alias maps support.
+
+	Feature: POSIX regular expressions by Lamont Jones. See
+	config/sample-regexp.c. Right now, enabled on *BSD and
+	LINUX only.
+
+19990328
+
+	Code cleanup: dictionaries now have flags that say whether
+	lookup keys are fixed strings or whether keys are subjected
+	to pattern matching. This is needed to avoid passing partial
+	addresses to regexp-based lookup tables (user, @domain,
+	user@, domain). Files: util/dict*.c.
+
+	Bugfix: fixed memory leaks and core dumps in the regexp
+	and pcre routines (neither handled an empty pattern file).
+
+19990329
+
+	Code cleanup: the dictionary I/O routines now do their own
+	locking depending on dictionary flag settings. This means
+	that the low-level dict_get() interface can now be used
+	for safe dictionary lookups. This is needed for 19990328's
+	partial lookup key support. Files: util/dict*.c. global/maps.c.
+
+	Feature: regular expression matches are no longer limited
+	to user@domain address forms in access/canonical/virtual
+	maps, but can also be used for domains in transport maps.
+	This needed the partial lookup key support to avoid passing
+	partial addresses to regexp-based lookup tables (user,
+	@domain, user@, domain). Files: global/maps.c
+	global/mail_addr_find.c.
+
+	Feature: new dictionary types can be registered with
+	dict_open_register(). File: util/dict_open.c.
+
+19990330
+
+	Bug fix: match_list membership dictionary lookups were case
+	sensitive when they should not. Patch by Lutz Jaenicke,
+	BTU Cottbus, Germany.
+
+19990402
+
+	Feature: $domain macro support in forward_path.  Philip A.
+	Prindeville, Mirapoint, Inc., USA.  File:  local/dotforward.c.
+
+	Feature: if an address extension (+foo) is explicitly
+	matched by the .forward+foo file name, do not propagate
+	the extension to recipient addresses. This is more consistent
+	with the way aliases are expanded. File:  local/dotforward.c.
+
+19990404
+
+	Bugfix: after receiving mail, the SMTP server didn't reset
+	the cleanup error flag, so that multiple deliveries over
+	the same SMTP session could fail due to errors with previous
+	deliveries. Found by Lamont Jones, Hewlett-Packard.
+
+19990405
+
+	Feature: MIME-encapsulated bounces. Philip A.  Prindeville,
+	Mirapoint, Inc., USA.  File:  bounce/bounce_notify_service.c
+
+	Cleanup: vstreams now properly look at the EOF flag before
+	attempting to read, eliminating the need for typing Ctrl-D
+	twice to test programs; the EOF flag is reset after each
+	unget or seek operation.  Files: util/vstream.c, util/vbuf.c.
+
+	Feature: in preparation for configurable message headers
+	the mac_parse() routine now balances the parentheses in
+	${name} or $(name). We need this in order to support
+	conditional expressions such as ${name?text} where `text'
+	contains other ${name} expressions.
+
+19990406
+
+	Cleanup: changed MIME header information to make bounces
+	more RFC 1892 compliant.
+
+19990407
+
+	Feature: "best_mx_transport = local" delivers mail locally
+	if the local machine is the best mail exchanger (by default,
+	mail is bounced with a "mail loops back to myself" error).
+
+	Config: in order to make feature tracking easier the source
+	code distribution now has a copy of the default settings
+	in conf/main.cf.default.
+
+	Feature: separate configurable postmaster addresses for
+	single bounces (bounce_notice_recipient), double bounces
+	(2bounce_notice_recipient), delayed mail (delay_notice_recipient),
+	and for other mailer errors (error_notice_recipient).  The
+	default for all is "postmaster".
+
+19990408
+
+	Workaround: on Solaris 2.x, the master appears to lose its
+	exclusive lock on the master.pid file, so keep grabbing
+	the lock each time the master wakes up from select().
+
+	Robustness: don't flush VSTREAM buffers after I/O error.
+	This prevents surprises when calling vstream_fclose() after
+	truncating a mailbox to its original size.
+
+	Portability: on LINUX systems, if <db_185.h> exists, don't
+	look for <db/db.h>.
+
+	Workaround: specify "sun_mailtool_compatibility = yes" to
+	avoid clashes with the mailtool application. This disables
+	kernel locks on mailbox files. Use only where needed.
+
+	Portability: renamed readline to readlline, to avoid clashes
+	with mysql.
+
+19990409
+
+	Bugfix: ignore temp queue files that aren't old enough.
+	Problem reported by Vivek Khera, Khera Communications, Inc.
+
+	Bugfix: fixed typo in dict_db.c that caused processes to
+	not release DB shared locks.
+
+	Feature: auto-detection of changes to DB or DBM lookup
+	tables.  This avoids the need to run "postfix reload" after
+	change to the smtp access table and other tables.
+
+	Feature: regular expression checks for message headers.
+	This requires support for POSIX or for PCRE regular
+	expressions.  Specify "header_checks = regexp:/file/name"
+	or "header_checks = pcre:/file/name", and specify
+	"/^header-name:  badstuff/ REJECT" in the pattern file
+	(patterns are case-insensitive by default).  Code by Lamont
+	Jones, Hewlett-Packard.  It is to be expected that full
+	content filtering will be delegated to an external command.
+
+19990410
+
+	Bugfix: auto-detection of changes to DB or DBM lookup tables
+	wasn't done for TCP connections.
+
+19990410
+
+	Feature: $recipient expansion in forward_path.  Philip A.
+	Prindeville, Mirapoint, Inc., USA.  File: local/dotforward.c
+
+	Feature: the smtp client consistently treats a numerical
+	hostname as an address. File: smtp/smtp_addr.c.
+
+19990414
+
+	Compatibility: support comment lines starting with # in
+	$mydestination include files. This makes Postfix more
+	compatible with sendmail.cw files. File: util/match_list.c.
+
+	Feature: if your machines have short host names, specify
+	"mydomain = domain.name", and you no longer have to specify
+	"myhostname = host.domain.name". Files:  global/mail_params.c,
+	postconf/postconf.c.
+
+19990420
+
+	Cleanup: bounce mail when a mailbox goes over file quota,
+	instead of deferring delivery.  File:  local/mailbox.c.
+
+19990421
+
+	Feature: auto-detection of changes to DB or DBM lookup
+	tables now includes the case where a file is unlinked.
+	Philip A.  Prindeville, Mirapoint, Inc., USA.  File:
+	util/dict.c.
+
+19990422
+
+	Robustness: Lotus mail sends MAIL FROM: <@> instead of <>.
+	Problem reported by Erik Toubro Nielsen, IFAD, Denmark.
+	Files:  trivial-rewrite/rewrite.c (@ becomes empty address)
+	and global/rewrite_clnt.c (allow empty response).
+
+	Bugfix: showq could segfault when writing to a broken pipe.
+	Problem reported by Bryan Fullerton, Canadian Broadcasting
+	Corporation. Files: util/vbuf_print.c.
+
+	Cleanup: got rid of the "fatal: write error: Broken pipe"
+	message when mailq output is piped into a program that
+	terminates early.
+
+	Cleanup: bounce messages are multipart/mixed with the error
+	report as part of the first message segment, because users
+	had trouble extracting the delivery error report from the
+	attachment.
+
+19990423
+
+	Cleanup: the default junk mail reject code is now 554
+	(service unavailable) rather than 550 (user unknown).
+
+	Folded in the updated dict_ldap.c module by John Hensley,
+	Merit Network, USA.
+
+	Folded in the vstream_popen.c updates by Philip A.
+	Prindeville, Mirapoint, Inc., USA.  This copies a lot of
+	code from pipe_command(); the next step is to trim that
+	module.
+
+19990425
+
+	Workaround: renamed config.h to mail_conf.h etc. in order
+	to avoid name collisions with LINUX (yes, they have a system
+	include file called config.h). For compatibility with people
+	who have written software for Postfix, there's a config.h
+	that aliases the old names to the new ones. That file will
+	go away eventually.
+
+19990426
+
+	Feature: error mailer, in order to easily bounce mail for
+	specific destinations. In the transport table, specify:
+	"host.domain    error:host.domain is unavailable". Too bad
+	that the transport table triggers on destination domain
+	only; it would be nice to bounce specific users as well.
+
+19990427
+
+	Cleanup: "disable_dns_lookups = yes" now should disable
+	all DNS lookups by the SMTP client.
+
+19990428
+
+	Bugfix: with DBM files, Postfix was watching the "dir" file
+	modification time for changes. It should be watching the
+	"pag" file instead.
+
+19990429
+
+	Cleanup: all callbacks in the master to server API now pass
+	on the service name and the application-specific argument
+	vector. Files: master/*server.c.
+
+19990504
+
+	Feature: conditional macro expansion. ${name?text} expands
+	to text when name is defined, otherwise the result is empty.
+	${name:text} expands to text when name is undefined,
+	otherwise the result is empty. File: util/mac_expand.c.
+
+	Feature: conditional macro expansion of the forward_path
+	configuration parameters of $user, $home, $shell, $recipient,
+	$extension, $domain, $mailbox and $recipient_delimiter.
+	Files:  local/dotforward.c, local/local_expand.c.
+
+19990506
+
+	Cleanup: eliminated misleading warnings about unknown HELO
+	etc. SMTPD restrictions when the HELO etc. information is
+	not available. File: smtpd/smtpd_check.c.
+
+19990507
+
+	Feature: all smtpd reject messages now contain the MAIL
+	FROM and RCPT TO addresses, if available.
+
+19990508
+
+	Feature: conditional macro expansion of the luser_relay
+	configuration parameter. It is no longer possible to specify
+	/file/name or "|command" destinations. File: local/unknown.c.
+
+	Cleanup: changed the mac_parse interface so that the
+	application callback routine can return status information.
+	Updated the dict_regexp and dict_pcre modules accordingly.
+
+	Cleanup: changed the mac_expand interface so that the caller
+	provides an attribute lookup routine, instead of having to
+	provide a copy of all attributes upfront. Files:
+	util/mac_expand.c, local/local_expand.c.
+
+	Feature: control over how address extensions are propagated
+	to other addresses. By default, propagation of unmatched
+	address extensions is now restricted to canonical and
+	virtual mappings. Specify "propagate_unmatched_extensions
+	= canonical, virtual, alias, forward, include" to restore
+	previous behavior.
+
+19990509
+
+	Feature: USER, EXTENSION, DOMAIN, RECIPIENT (entire address)
+	and MAILBOX (address localpart) environment variables are
+	exported to shell commands (including mailbox_command).
+
+	Feature: new command_expansion_filter parameter to control
+	what characters may appear in message attributes that are
+	exported via environment variables.
+
+	Cleanup: SMTPD reject messages are more informative, and
+	more complete sender/recipient information is logged for
+	the local sysadmin.
+
+19990510
+
+	Bugfix: missing MIME header in postmaster bounce notices.
+	Found by Samuel Tardieu, Ecole Nationale Superieure des
+	Telecommunications, France.
+
+	Feature: UCE restrictions are always delayed until RCPT
+	TO, VRFY or ETRN. To change back to the default specify
+	"smtpd_delay_reject = no" in /etc/postfix/main.cf.
+
+	Bugfix: missing duplicate filter call. This caused too many
+	deliveries when a user is listed multiple times in an alias.
+	Reported by Hideyuki Suzuki, School of Engineering, University
+	of Tokyo. Backed out on 19990512 because it caused problems.
+	Fixed 19990513 but needs further study.
+
+	Feature: it is now possible to move queue files back into
+	the maildrop queue, so that they can benefit from changes
+	in canonical and virtual mappings. In order to make this
+	possible, some restrictions on queue file contents were
+	relaxed. Files: pickup/pickup.c, cleanup/cleanup_extracted.c.
+
+	Feature: made a start with integrating Joerg Henne's
+	dictionary extensions to remove entries and to iterate over
+	entries. That code is almost four months old by now.
+
+19990511
+
+	Feature: added a "undeliverable postmaster notification
+	discarded" warning when mail is dropped on the floor.
+	Requested by Michael Hasenstein, SuSE, Germany.
+
+19990517
+
+	Bugfix: reject_non_fqdn_sender/recipient would pass
+	user@[ip_address] regardless of destination. Eric Cholet
+	had the honor of suffering from this one.
+
+19990527
+
+	More SMTP client logging for easier debugging: the smtp
+	client now logs hostname[ip.addr], and logs every failed
+	attempt to reach an MX host, not just the last one.
+
+19990601
+
+	Bugfix: emit a blank line before a MIME boundary; the line
+	is part of the boundary. File: bounce/bounce_notify_service.c.
+	Wolfgang Segmuller, IBM Research.
+
+19990610
+
+	Bugfix: the "is this the loopback interface" test was
+	broken.  Reported by Claus Fischer @microworld.com.  File:
+	smtp/smtp_connect.c.
+
+	Usability: added helpful warnings about restrictions that
+	are being ignored after check_relay_domains, etc.
+
+	Portability: Reliant Unix support by Gert-Jan Looy, Siemens,
+	the Netherlands.
+
+19990611
+
+	Robustness: the postfix-script start-up procedure now
+	detects a missing master program, avoiding misleading
+	warnings that the mail system is already running.  Fix
+	suggested by David E. Smith @technopagan.org.
+
+	Portability: Mac OS X Server Port by Mark Miller @swoon.net.
+
+	Feature: on systems that use dotlock files for mailbox
+	locking, the local delivery agent now will attempt to use
+	dotlock files when delivering to user-specified files.
+	Dotlock files for user-specified destinations are created
+	with the privileges of the user. For backwards compatibility,
+	Postfix will attempt to create dotlocks for user-specified
+	destinations only when the user has parent directory write
+	permission.
+
+	Feature: specify "expand_owner_alias = yes" in order to
+	use the right-hand side of an owner- alias, instead of
+	using the left-hand side address. Needed by Juergen Georgi.
+
+19990622
+
+	Bugfix: the local delivery agent did not set user attributes
+	when delivering to root, so that forward_path did not expand
+	properly. Found by Jozsef Kadlecsik, KFKI Research Institute
+	for Particle and Nuclear Physics, Hungary.  File:
+	local/dotforward.c.
+
+	Bugfix: the unix:passwd.byname mechanism is not suitable
+	for smtpd access control - the user name would have to end
+	in @, or the access control software would have to be
+	changed. Removed the example from the RELEASE_NOTES file.
+
+19990623
+
+	Bugfix: the smtp server did not reset the error flag after
+	".". Found by James Ponder, Oaktree Internet Solutions Ltd.
+	File: smtpd/smtpd.c.
+
+	Bugfix: fencepost error in the doze() routine (an usleep()
+	replacement for systems without one). Found by Simon J
+	Mudd.  File: util/doze.c.
+
+19990624
+
+	Portability: support for AIX 3.2.5 (!) by Florian Lohoff
+	@rfc822.org.
+
+	Portability: Ultrix 4.3 support by Christian von Roques
+	@pond.sub.org.
+
+	Feature: mysql support by Scott Cotton and Joshua Marcus,
+	Internet Consultants Group, Inc. Files: util/dict_myqsl.*.
+
+19990627
+
+	Bugfix: Postfix is now distributed under the new IBM Public
+	License (version 1, dated June 14, 1999).
+
+	Feature: the Delivered-To: header can be turned off for
+	delivery to command or file/mailbox. The default setting
+	is:  "prepend_delivered_header = command, file, forward".
+	Turning off the Delivered-To: header when forwarding mail
+	is not recommended.
+
+19990628
+
+	Feature: the postlock command now returns EX_TEMPFAIL when
+	the destination file is locked by another process.
+
+19990705
+
+	Workaround: in the SMTP client, move the "mail loops back
+	to myself test" from the 220 greeting to the HELO response.
+	This change does not weaken the test, and makes Postfix
+	more robust against broken software that greets with the
+	client hostname.
+
+19990706
+
+	Workaround: in the INSTALL file, use `&&' instead of `;'
+	in (cd path; tar ...) pipelines because some UNIX re-invented
+	shells don't bail out when cd fails. Matthias Andree
+	@stud.uni-dortmund.de.
+
+19990709
+
+	Bugfix: $user was not set when delivering to a non-user.
+	Found by Vladimir Ulogov @ rohan.control.att.com when
+	configuring a luser_relay that contained $user.
+
+19990714
+
+	Robustness: add PATH statement to Solaris2 chroot setup
+	script to avoid running the ucb commands. Problem found by
+	Panagiotis Astithas @ ece.ntua.gr.
+
+19990721
+
+	Bugfix: don't claim a "mail loops to myself" error when
+	the best MX host was not found in the DNS. Found by Andrew
+	McNamara, connect.com.au Pty Ltd. File: smtp/smtp_addr.c.
+
+19990810
+
+	Feature: added "-c config_dir" support to the postconf
+	command. This probably means that "-f file" will never be
+	implemented.
+
+19990812
+
+	Bugfix: showq didn't print properly when listing a maildrop
+	file.  Fix by: Andrew McNamara, connect.com.au Pty Ltd.
+	File: showq/showq.c.
+
+	Feature: added SENDER to the list of parameters exported
+	to external commands. File: local/command.c. Code by: Lars
+	Hecking, National Microelectronics Research Centre, Ireland.
+
+19990813
+
+	Bugfix: sendmail -t (extract recipients from headers) did
+	not work when the always_bcc feature was turned on. Reported
+	by: Denis Shaposhnikov @ neva.vlink.ru.
+
+19990813
+	Bugfix: "sendmail -bd" returns a bogus exit status (the
+	child process ID). Fix by Lamont Jones of Hewlett-Packard.
+	File:  sendmail/sendmail.c.
+
+19990824
+
+	Bugfix: null pointer dereference while rejecting VRFY before
+	MAIL FROM. Found by Laurent Wacrenier @ fr.clara.net.
+
+19990826
+
+	Portability: more MacOS X Server patches; some NEXTSTEP/OPENSTEP
+	code that had been removed for the first public beta release;
+	NEXTSTEP/OPENSTEP now defaults to netinfo for the aliases
+	database.  Submitted by Gerben Wierda.
+
+	Portability: workaround for a FreeBSD 3.x active network
+	interface without IP address by Pierre Beyssac @ enst.fr.
+	File:  inet_addr_local.c.
+
+19990831
+
+	Workaround: sendmail now prints a warning when installed
+	set-uid or when run by a set-uid command. Reportedly, the
+	linuxconf software turns on the set-uid bit, which could
+	open up a security loophole. File: sendmail/sendmail.c.
+
+	Bugfix: Postfix daemons now temporarily lock DB/DBM files
+	while opening them, in order to avoid "invalid argument"
+	errors because some other process is changing the file.
+	Files: util/dict_db.c, util/dict_dbm.c.
+
+	Robustness: Postfix locks queue files during delivery, to
+	prevent duplicate delivery when "postfix reload" is
+	immediately followed by "sendmail -q". This involves a
+	change of the deliver_request interface:  delivery agents
+	no longer need to open and close queue files explicitly.
+	Files:  global/deliver_request.c, pipe/pipe.c, smtp/smtp.c,
+	local/local.c, qmgr/qmgr_active.c, qmgr/qmgr_message.c.
+
+	Feature: reject_unauth_destination SMTP recipient restriction
+	that rejects destinations not in $relay_domains.  By Lamont
+	Jones of Hewlett-Packard.  File: smtpd/smtpd_check.c.
+
+	Security: do not allow weird characters in the expansion
+	of $names that appear in $forward_path. Just like with
+	shell commands, replace bad characters in expansions by
+	underscores.  Configuration parameter:  forward_expansion_filter.
+
+19990902
+
+	Documentation: added a sample postfix alias to the examples
+	in the INSTALL document and in the conf/aliases file.
+	Reminded by Simon J.  Mudd @ alltrading.com.
+
+19990903
+
+	Bugfix: in case of some error conditions the pickup daemon
+	could leak small amounts of memory.
+
+19990905
+
+	Bugfix: no more "skipping further client input" warnings
+	when a message header is rejected.
+
+	Feature: reject_unauth_pipelining SMTP restriction that
+	rejects mail from clients that improperly use SMTP command
+	pipelining.
+
+	Robustness: the LDAP client by default no longer looks up
+	names containing "*". See the lookup_wildcards feature in
+	LDAP_README. Update by John Hensley.
+
+	Documentation: address masquerading with exceptions FAQ by
+	Jim Seymour @ jimsun.LinxNet.com.
+
+	Bugfix: mysql reconnect after disconnect by Scott Cotton
+	Internet Consultants Group, Inc. File: util/dict_myqsl.c.
+
+	Portability: the Postfix to PCRE interface now expects
+	version 2.08.  Postfix is no longer compatible with PCRE
+	versions before 2.6.
+
+19990906
+
+	Feature: INSTALL.sh script that makes Postfix installation
+	a bit less painful. This script can be used for installing
+	and for upgrading Postfix. It replaces files instead of
+	overwriting them, and leaves existing configuration and
+	queue files intact.
+
+19990907
+
+	Bugfix: reject_non_fqdn_sender used the wrong test to see
+	if a sender address was given and could dump core. This
+	must have been broken ever since the UCE tests were moved
+	to the RCPT TO stage in 19990510.
+
+	Bugfix: check_sender_access was recognized as a valid
+	restriction name only if a sender had been specified.
+
+19990908
+
+	Portability: Unixware has <sysexits.h> only after sendmail
+	is installed. Changed postlock.c to use global/sys_exits.h.
+
+19990909
+
+	Performance: added one-entry cache to the address rewriting
+	client and to the address resolving client. This is because
+	UCE restrictions tend to produce the same query repeatedly.
+	Files: global/rewrite_clnt.c, global/resolve_clnt.c.
+
+	Feature: the UCE restrictions are now fully recursive so
+	you can have per-client/helo/sender/recipient restrictions.
+	Instead of OK, REJECT or [45]xx, you can specify a sequence
+	of restrictions on the right-hand side of an SMTPD access
+	table. This means you can no longer use canonical/virtual/alias
+	maps as SMTPD access tables. But the loss is compensated
+	for.  File: smtpd/smtpd_access.c.
+
+	Feature: restriction classes, essentially a short-hand for
+	restriction lists.  These short hands are useful mostly on
+	the right-hand side of SMTPD access tables. You must use
+	restriction classes in order to have lookup tables on the
+	right-hand side of an SMTPD access table.  File:
+	smtpd/smtpd_access.c.
+
+	Feature: "permit_recipient_map maptype:mapname" permits a
+	recipient address when it matches the specified table.
+	Lookups are done just as with canonical/virtual maps.  With
+	this, you can also use passwd/aliases as SMTPD access maps.
+	File: smtpd/smtpd_access.c.
+
+19990910
+
+	Changed "permit_address_map" into "permit_recipient_map"
+	and added a test for the case that they specify a lookup
+	table on the right-hand side of an SMTPD access map.  File:
+	smtpd/smtpd_access.c.
+
+	Cleanup: removed spurious sender address checks for <>.
+	File: smtpd/smtpd_check.c.
+
+	Cleanup: the smtp client now consistently logs host[address]
+	for all connection attempts.
+
+19990919
+
+	Feature: in an SMTPD access map, an all-numeric right-hand
+	side now means OK, for better cooperation with out-of-band
+	authentication mechanisms.
+
+19990922
+
+	Security: recipient addresses must not start with '-', in
+	order to protect external commands. The old behavior is
+	re-instated when main.cf specifies:  "allow_min_user =
+	yes".  Credits to Mads Kiilerich @ Kiilerich.com.  File:
+	qmgr/qmgr_message.c.
+
+	Bugfix: after 19990831, the queue manager would throw away
+	defer logs after deferring mail to known-to-be-dead hosts
+	or message transports. This means that in some cases, mailq
+	would not show why mail is delayed, and that delayed mail
+	could be sent back with recipients missing from the error
+	report. Reported by Giulio Orsero @ tiscalinet.it.
+
+19990923
+
+	Bugfix: the above bugfix broke bounces of mail with bad
+	address syntax and relocated users. Problem diagnosed by
+	Dick Porter @ acm.org.
+
+	Documentation: added DO NOT EDIT THIS FILE. EDIT MAIN.CF
+	INSTEAD notices to the sample-xxx.cf files.
+
+19991007
+
+	Compatibility: ignore the sendmail -U (initial user
+	submission) option. Thomas Quinot @ cuivre.fr.eu.org.
+
+19991103
+
+	Code cleanup: don't send postmaster notifications when an
+	SMTP client sends a DATA command while no recipients were
+	accepted.  This can happen when a pipelined client runs
+	into an UCE block. File:  smtpd/smtpd.c.
+
+19991104
+
+	Robustness: do not apply UCE header checks to mail that is
+	generated by Postfix (bounces, forwarded mail etc.).  Files:
+	smtpd/smtpd.c, pickup/pickup.c, cleanup/cleanup_message.c.
+
+	Robustness: new generic watchdog module that can deal with
+	clocks that jump occasionally. Files: util/watchdog.c,
+	master/master.c, master/{single,multi,trigger}_server.c.
+	This hopefully ends the false watchdog alarms that happen
+	when clocks are set or when laptops are resumed.
+
+	Code cleanup: BSMTP requires dot quoting as per RFC 821.
+	Based on code by Florian Lohoff @ rfc822.org. Files:
+	global/mail_copy.[hc], pipe/pipe.c.
+
+19991105
+
+	Bugfix: the crufty code in inet_addr_local() did not find
+	IP aliases. File: util/inet_addr_local.c.
+
+	Portability: the INSTALL.sh utility did not find users or
+	groups in NIS or Netinfo tables. The script no longer
+	searches the /etc/passwd and /etc/group files.  Instead it
+	now queries the unix:passwd.byname and unix:group.byname
+	maps.  For this, a -q (query) option was added to postmap
+	(and to postalias, for symmetry).  Files: util/dict_unix.c,
+	postalias/postalias.c, postmap/postmap.c, INSTALL.sh.
+
+	Bugfix: LDAP lookup timeout settings were ignored. Patch
+	by John Hensley. File: util/dict_ldap.c.
+
+19991108
+
+	Bugfix: when doing a fresh install, INSTALL.sh didn't set
+	main.cf:mail_owner properly (Simon J. Mudd).
+
+19991109
+
+	Bugfix: when doing a fresh install, INSTALL.sh no longer
+	worked (missing main.cf file).  Fix: add "-c" argument to
+	the postmap commands (Lars Hecking @ nmrc.ucc.ie).
+
+	Documentation: removed spurious "do not edit" comments from
+	the sample pcre and regexp configuration files.
+
+19991110-13
+
+	Code cleanup: greatly simplified the SMTPD command parser
+	and somewhat simplified the code that groks RFC 822-style
+	address syntax in MAIL FROM and RCPT TO commands.
+
+	New parameter: strict_rfc821_envelopes (default: no) to
+	reject RFC 822 address forms (with comments etc.) in SMTP
+	envelopes. By default, the Postfix SMTP server only logs
+	a warning.
+
+19991113
+
+	Oops, also updated the SMTP VRFY code in the light of
+	changes to the SMTPD command parser.
+
+	Cleanup: the local delivery agent now explicitly rejects
+	recipients with an empty username.
+
+19991114
+
+	Workaround: with some gawk versions, postconf/extract.awk
+	reportedly returns a non-zero exit status upon success.
+	Added an explicit exit(0) statement.
+
+19991115
+
+	Feature: DNS TXT record lookup support, based on initial
+	code by Simon J Mudd.  File: dns/dns_lookup.c.
+
+	Feature: RBL TXT record lookups, based on initial code by
+	Simon J Mudd.  File: smtpd/smtpd_check.c.
+
+	Feature: permit_auth_destination restriction based on code
+	by Jesper Skriver @ skriver.dk.
+
+	Code cleanup: the transport table now can override all
+	deliveries, including local ones.
+
+19991116
+
+	Code cleanup: a new "local_transports" configuration
+	parameter explicitly lists all transports that deliver mail
+	locally. The first name listed there is the default local
+	transport.  This is the end of the "empty next-hop hostname"
+	hack to indicate that a destination is local.  Files:
+	trivial-rewrite/resolve.c, global/local_transport.[hc]
+
+	Feature: "postconf -m" shows what lookup table types are
+	available.  Code by Scott Cotton, Internet Consultants
+	Group, Inc.
+
+	Feature: "postconf -e" edits any number of main.cf parameters.
+	The edit is done on a copy, and the copy is renamed into
+	the place of the original. File: postconf/postconf.c,
+	util/readlline.[hc].
+
+19991117
+
+	Portability: SunOS 4 has no SA_RESTART. File: util/watchdog.c.
+
+	Feature: on systems with h_errno, the "reject_unknown_client"
+	restriction now distinguishes between soft errors (always
+	reply with 450) and hard errors (use the user-specified
+	reply code).  This should lessen the load by broken mailers
+	that re-connect once a minute.
+
+	Feature: forward/reverse name/address check for SMTP client
+	hostnames. This fends off some hypothetical attacks by
+	spammers who are in control of their own reverse mapping.
+
+	Robustness: postconf no longer aborts when it can't figure
+	out the local domain name; it prints a warning instead.
+	This allows you to use "postconf -e" to fix the problem.
+
+19991118
+
+	Bugfix: the RFC822 address parser would misparse a leading
+	\ as an atom all by itself. Problem reported by Keith
+	Stevenson @ louisville.edu. File: global/tok822_parse.c.
+
+19991119
+
+	Bugfix: tiny memory leak in pipe_command() when fork()
+	fails.  File: global/pipe_command.c.
+
+19991120
+
+	Bugfix: reversed test for all-numerical results in SMTPD
+	access maps. File: smtpd/smtpd_check.c.
+
+19991121
+
+	Robustness: INSTALL.sh no longer uses postmap for sanity
+	checks.
+
+	Feature: INSTALL.sh now has an install_root option.
+
+	Bugfix: INSTALL.sh now installs manual pages with proper
+	permissions and ownership.
+
+	Bugfix: the LDAP client did not properly escape special
+	characters in lookup keys (patch by John Hensley).  File:
+	util/dict_ldap.c.
+
+19991122
+
+	Bugfix: missing absolute path in INSTALL.sh broke fresh
+	install.
+
+19991124
+
+	Bugfix: the local delivery agent's recipient duplicate
+	filter did not work when configured to use unlimited memory
+	(which is not a recommended setting). Patrik Rak @raxoft.cz.
+
+19991125
+
+	Bugfix: postconf didn't have an umask(022) call at the
+	beginning (problem experienced by Matthias Andree).
+
+19991126
+
+	Bugfix: DNS TXT records now have string lengths before text
+	(Mark Martinec @ nsc.ijs.si).
+
+19991127
+
+	Update: the LDAP client code now supports escapes as per
+	RFC2254 (John Hensley).
+
+19991207
+
+	Performance: one message with many recipients no longer
+	stops other mail from being delivered. The queue manager
+	now frees in-memory recipients as soon as a message is
+	delivered to one destination, rather than waiting until
+	all in-memory destinations of that message have been tried.
+	Patch by Patrik Rak @ raxoft.cz.  Files: qmgr/qmgr_entry.c,
+	qmgr/qmgr_message.c.
+
+	Performance: when delivering mail to a huge list of
+	recipients, the queue manager now reads more recipients
+	from the queue file before delivery concurrency drops too
+	low.  Files:  qmgr/qmgr_entry.c, qmgr/qmgr_message.c.
+
+19991208
+
+	Updated LDAP client code by John Hensley with escape
+	sequences as per RFC 2254. File: util/dict_ldap.c.
+
+	Updated MYSQL client code by Scott Cotton. File: dict_mysql.c.
+
+	Feature: added -N/-n options to include/exclude terminating
+	nulls in keys and values in postmap/postalias DB or DBM
+	files. Normally, Postfix uses whatever is appropriate for
+	the host system.  A non-default setting can be necessary
+	for inter-operability with third-party software.
+
+	Bugfix: the local delivery agent would deliver to the user
+	instead of the .forward file when the .forward file was
+	already visited via some non-recursive path. Patch by Patrik
+	Rak @ raxoft.cz. Files: global/been_here.c, local/dotforward.c.
+
+	Robustness: attempt to deliver all addresses in the expansion
+	of an alias or .forward file, even when some addresses must
+	be deferred.  File: local/token.c.
+
+19991211
+
+	Performance: qmgr_fudge_factor controls what percentage of
+	delivery resources Postfix will devote to one message.
+	With 100%, delivery of one message does not begin before
+	delivery of the previous message is completed. This is good
+	for list performance, bad for one-to-one mail. With 10%,
+	response time for one-to-one mail improves much, but list
+	performance suffers. In the worst case, people near the
+	start of a mailing list get a burst of postings today,
+	while people near the end of the list get that same burst
+	of postings a whole day later.  Files: qmgr/qmgr_message.c,
+	qmgr/qmgr_entry.c.
+
+	Bugfix: address rewriting would panic on a lone \ at the
+	end of a line where an address was expected. Jason Hoos @
+	thwack.net. File: global/rewrite_clnt.c.
+
+19991215
+
+	Bugfix: the strict RFC821 envelope address check should
+	not be applied to VRFY commands. File: smtpd/smtpd.c.
+
+	Cleanup: permit_recipient_maps is gone, because that could
+	only be used inside UCE restrictions.
+
+19991216
+
+	Feature: allow an empty inet_interfaces parameter, just
+	like an empty mydestination parameter. It's needed for true
+	null clients and for firewalls that deliver no local mail.
+
+	Feature: "disable_vrfy_command = yes" disables some forms
+	of address harvesting used by spammers.
+
+	Workaround: added the alias map parameter definition to
+	the smtpd code.  This is a symptom of a general problem
+	with parameters that have non-empty default values:  unless
+	a program explicitly defines such a parameter, the parameter
+	defaults to the empty string when used in other parameters.
+	There's also a problem with evaluation order.
+
+	Feature: the SMTP server rejects mail for unknown users in
+	virtual domains that are defined by Postfix virtual domain
+	files. File: smtpd/smtpd_check.c.
+
+	Feature: reject mail for unknown local users at the SMTP
+	port.  The local_recipient_maps configuration parameter
+	specifies maps with all addresses that are local with
+	respect to $mydestination or $inet_interfaces. Example:
+	"local_recipient_maps = $alias_maps unix:passwd.byname".
+	This feature is disabled by default. You may have to copy
+	the passwd file into the chroot jail. File:  smtpd/smtpd_check.c.
+
+	Feature: the sendmail -f option now understands '<user>'
+	and even understands address forms with RFC 822-style
+	comments.
+
+19991217
+
+	Cleanup: no more UCE checks for VRFY commands. It still
+	reports unknown local/virtual users. File:  smtpd/smtpd_check.c.
+
+	Robustness: upon Postfix startup, report discrepancies
+	between system files inside and outside the chroot jail.
+	Files: conf/postfix-script-nosgid, conf/postfix-script-sgid.
+
+19991218
+
+	Cleanup: INSTALL.sh produces relative symlinks, which is
+	necessary when install_root is not /.
+
+19991219
+
+	Documentation: completely reorganized the FAQ and added
+	many new entries. Rewrote the UCE html documentation.
+
+	Cleanup: INSTALL.sh uses a configurable directory for
+	scratch files, so that it can install from a file system
+	that is not writable by the super-user.
+
+	Cleanup: INSTALL.sh gives helpful hints when the "mv"
+	command is unable to move symlinks across file system
+	boundaries.
+
+19991220
+
+	Cleanup: it is no longer necessary to list $virtual_maps
+	as part of the relay_domains definition. The SMTP server
+	now by default accepts mail for destinations that match
+	$inet_interfaces, $mydestination or $virtual_maps, whether
+	or not these are specified in relay_domains.  We still need
+	the ugly "virtual.domain whatever" hack in the virtual
+	maps. Files:  smtpd/smtpd_check.c and lots of documentation
+	and sample config files.
+
+19991221
+
+	Removed cyrus -q flag (ignore quotas) from the sample
+	master.cf file.
+
+19991223
+
+	Bugfix: smtpd should not check for unknown users when
+	running in stand-alone (sendmail -bs) mode. Problem
+	experienced by Chuck Mead.  File: smtpd/smtpd.c.
+
+	Retraction: the "local_transports" configuration parameter
+	is gone. Adjusted code and documentation accordingly.
+	Instead, use just one "local_transport" parameter with the
+	name of the default local transport. Files:  smtpd/smtpd_check.c,
+	qmgr/qmgr_message.c, trivial-rewrite/ resolve.c, local/resolve.c.
+
+	Feature: Postfix SMTPD now insists that the smtpd recipient
+	restrictions contain at least one restriction that by
+	default rejects mail. This should make it much more difficult
+	to change Postfix into an open relay.  File:  smtpd/smtpd_check.c.
+
+	Retraction: null-length inet_interfaces is too confusing.
+
+19991224
+
+	Bugfix: the relative symlink code in INSTALL.sh computed
+	the ../ prefix from the wrong pathname.
+
+1999122[5-7]
+
+	Feature: "allow_untrusted_routing = no" (default) prevents
+	forwarding of source-routed mail from untrusted clients to
+	destinations that are blessed by the relay_domains parameter
+	(example:  user@domain2@domain1 etc.).  This plugs a mail
+	relay loophole where a backup MX host forwards junk mail
+	to a primary MX host which forwards the junk to the Internet.
+	Files:  global/quote_822_local.c, smtp/quote_821_local.c,
+	trivial-rewrite/rewrite.c, trivial-rewrite/resolve.c,
+	smtp/smtpd_check.c.
+
+	In order to make this possible, the Postfix resolver data
+	structure and protocol has changed, so that all resolver
+	clients need to be re-compiled.
+
+	Side effect from the above change: from now on, an address
+	with @ in the recipient localpart no longer bounces with
+	"user unknown" but instead is rejected with "relay access
+	denied" or "source-routed relay access denied".
+
+19991227
+
+	Workaround: the BSD/OS "mkdir -p" and "cmp -s" commands
+	misbehave on boundary cases: directory exists or file does
+	not exist. Those who re-invent...
+
+19991229
+
+	Added the no source routing info requirement to addresses
+	accepted by the permit_mx_backup UCE restriction.
+
+19991230
+
+	Added a spawn daemon (not compiled and installed by default)
+	to enable LMTP delivery over UNIX-domain sockets. The goal
+	is to simplify the experimental LMTP delivery agent by
+	ripping out the privileged code that forks the LMTP server.
+
+20000102
+
+	Clarified documentation after early feedback on the 19991231
+	release by Drew Derbyshire, Ollivier Robert, Khetan Gajjar.
+
+	Sanity check: a common error is to list Postfix virtual
+	domains in the mydestination parameter. This causes the
+	new optional local_recipient_maps feature to reject mail
+	for virtual users.  The SMTP server now explicitly tests
+	for this common error and logs a warning instead of refusing
+	the mail.  File:  smtpd/smtpd_check.c.
+
+20000104
+
+	Bugfix: a case sensitivity bug had slipped through in the
+	anti-relaying code, causing mail for USER@VIRTUAL.DOMAIN
+	to be rejected with "relay access denied". This was found
+	by Jim Maenpaa @ jmm.com.
+
+	Questionable feature: set "smtp_skip_5xx_greeting = yes"
+	to make Postfix more sendmail compatible, even though this
+	is wrong, IMNSHO. File: smtp/smtp_connect.c.
+
+	Portability: Ultrix patch from Simon Burge @ thistledown.com.au.
+
+	Portability: Siemens Pyramid (dcosx) patch by Thomas D.
+	Knox @ vushta.com.
+
+	Performance: FreeBSD has bidirectional pipes that are faster
+	than socketpairs. Anticipating on more platform-specific
+	optimizations, all duplex pipe plumbing is now isolated in
+	a duplex_pipe.c module that provides a system-independent
+	interface.
+
+20000105
+
+	Cleanup: the INSTALL.sh script now updates the sample files
+	in /etc/postfix even when main.cf exists.
+
+20000106
+
+	Bugfix: the SMTP server should consult the relocated map
+	for virtual destinations (Denis Shaposhnikov). Files:
+	smtpd/smtpd.c smtpd/smtpd_check.c.
+
+20000108
+
+	Workaround: rename() over NFS can fail with ENOENT even
+	when the operation succeeds (Graham Orndorff @ WebTV). This
+	is not news. Any non-idempotent operation can fail over
+	NFS when the NFS server's acknowledgment is lost and the
+	NFS client code retries the operation (other examples are:
+	create, symlink, link, unlink, mkdir, rmdir).  Postfix has
+	workarounds for the cases where this is most likely to
+	cause trouble. Files:  util/sane_{rename,link}.[hc].  If
+	you want reliable mail system, do not use NFS.
+
+20000115
+
+	Workaround: better detection of bad hardware. Added SIGBUS
+	to the list of signals that the master will log before
+	exiting.
+
+20000122
+
+	Portability: preliminary SCO5 port Christopher Wong @
+	csports.com. This still needs to a workaround for "find"
+	not supporting "-type s" (actually, UNIX-domain sockets
+	have no unique representation in the file system and show
+	up as FIFOs).
+
+20000115-22
+
+	Bugfix: in case of a too long message header, don't extract
+	recipients from message headers.  With the previous behavior,
+	Bcc information could be left in the message body, as one
+	person found out the hard way.  Files:  cleanup/cleanup.c,
+	cleanup/cleanup_extracted.c, global/cleanup_user.h.
+
+20000124
+
+	Whatever: RFC 1869 amends RFC 821 and specifies that code
+	555 is to be used when a MAIL FROM or RCPT TO parameter is
+	not implemented or not recognized. Russ Allbery @stanford.edu.
+	This reply code is added to the list of reply codes that
+	cause the Postfix SMTP client to mail a transcript to the
+	postmaster.  File: smtp/smtp_trouble.c.
+
+20000126
+
+	Emergency feature: qmgr_site_hog_factor (default: 90 percent)
+	limits the amount of resources that Postfix devotes to a
+	single destination. With less than 100, Postfix defers the
+	excess mail so that one site with a large backlog does not
+	block other deliveries. Files: qmgr/qmgr.c, qmgr/qmgr_message.c.
+
+20000128
+
+	Cleanup: the queue manager no longer replaces the nexthop
+	field by the recipient localpart when a destination matches
+	$mydestination/$inet_interfaces. The price is the introduction
+	of a new parameter local_destination_recipient_limit which
+	defaults to 1 in order to maintain backwards compatibility.
+	Files: qmgr/qmgr.c, qmgr/qmgr_message.c.
+
+20000129
+
+	Bugfix: extracted recipients were misfiled when a message
+	was moved back to the maildrop queue. But they still worked
+	due to a coincidence.
+
+	Feature: bounce_recip() bounces a recipient immediately
+	without accessing a bounce logfile.  This is necessary for
+	VERP bounces, for bounces by delivery agents that change
+	the sender address, and for bounces that for some reason
+	must not use temporary logfiles.  Files: global/bounce.c,
+	bounce/bounce_recip_service.c.
+
+20000130
+
+	Bugfix: the too long header fix of 20000115-22 lost mail
+	with too long headers that didn't need to extract recipients
+	from message headers.
+
+	Bugfix: the too long header fix of 20000115-22 lost mail
+	without (blank line + message body).
+
+	Code rewrite: reorganized the cleanup daemon source code
+	so that the cleanup service can be called one record at a
+	time (see cleanup/cleanup_api.c); also got rid of the global
+	state variables and fixed a couple bugs that were introduced
+	with 20000115-22.
+
+20000204
+
+	Feature: in daemon mode, the MAIL FROM size check can be
+	postponed until RCPT TO so that Postfix can log sender and
+	recipient. Simon J Mudd.  Files: smtpd/smtpd.c
+
+	Robustness: limit the number of recipient addresses that
+	can be extracted from message headers. Parameter:
+	extract_recipient_limit (default:  10240). Files:
+	cleanup/cleanup_message.c, cleanup/cleanup_extracted.c.
+
+	Cleanup: the message header reject logging now includes
+	sender and recipient address (if possible), so that the
+	logging looks more like the other reject logging.  File:
+	cleanup/cleanup_message.c.
+
+	Documentation: added sections on regular expression tables
+	to the access, canonical, virtual, transport and relocated
+	man pages, and write new man pages that are specific to
+	regular expressions: pcre_table.5 and regexp_table.5.
+
+20000214
+
+	Bugfix: postconf reported some parameters more than once
+	because the parameter extracting script didn't recognize
+	lines that differ in whitespace only. File: postconf/extract.awk.
+	Reported by Kenn Martin.
+
+20000221
+
+	Logging: the SMTP client now logs log host+port when it is
+	unable to connect to a non-MX host, just like it logs
+	host+port when unable to connect to an MX host.
+
+20000226
+
+	Bugfix: the SMTP server's "User unknown" test didn't notice
+	LDAP etc. dictionary access errors. The code now reports
+	a 450 status (try again instead of bounce) if the reply is
+	not definitive.  File: smtp/smtpd_check.c.
+
+	Robustness: the smtp-source program could stall when making
+	hundreds of parallel connections to a Postfix system with
+	only one SMTP server process. The fix is to use non-blocking
+	connect() calls, very carefully. File: smtpstone/smtp-source.c.
+
+20000303
+
+	Feature: with smtp_always_send_ehlo the SMTP client will
+	send EHLO regardless of the content of the SMTP server's
+	greeting.  File: smtp/smtp_proto.c.
+
+20000304
+
+	Feature: DICT_FLAG_SYNC_UPDATE flag for synchronous dictionary
+	updates, if supported by the underlying mechanism. Files:
+	util/dict.h, util/dict_open.c, util/dict_db.c.
+
+20000307
+
+	Cleanup: the manual pages in Postfix configuration files
+	no longer contain troff formatting codes.  The text is now
+	generated from prototype files in a new "proto" subdirectory.
+	Requested by Matthias Andree @ stud.uni-dortmund.de.
+
+20000308
+
+	Bugfix: the unused db and dbm "delete" routines would
+	clobber the per-dictionary flags when called before reading
+	or writing the table. Files: util/dict_dbm.c, util/dict_db.c.
+	Lutz Jaenicke @ aet.TU-Cottbus.DE.
+
+	Bugfix: the SMTP server would produce a cryptic message
+	when a queue file write error happened before it had written
+	any recipients.  Keith Stevenson. File: smtpd/smtpd.c.
+
+	Robustness: the db and dbm "delete" routines didn't adjust
+	to dictionaries with/without one trailing null in lookup
+	keys and values. Did a complete rewrite of the routines.
+	Files: util/dict_db.c, util/dict_dbm.c.
+
+	Feature: specify "-d key" to postalias or postmap in order
+	to remove one key. This still needs to be generalized to
+	multi-key removal (read stdin?). Files: postmap/postmap.c,
+	postalias/postalias.c.
+
+	Test: added test targets for the dictionary delete operations.
+	Files: util/Makefile.in, util/dict_test.{c,in,ref}.
+
+	Feature: added data offset and recipient count fields to
+	the first queue file record output from the cleanup daemon.
+	The recipient counts provides an initial estimate for a
+	more advanced queue manager scheduling algorithm. Files:
+	cleanup/cleanup_envelope.c, cleanup/cleanup_extracted.c.
+
+20000311
+
+	Portability: HP-UX awk can't handle bare { in regexps
+	(Lamont Jones. HP). File: postconf/extract.awk.
+
+	Compatibility: sendmail now recognizes '.' as end of input.
+	File: sendmail/sendmail.c.
+
+20000313
+
+	Compatibility: dtcm (CDE desktop calendar manager) leaks
+	a file descriptor into its child process, and requires that
+	sendmail closes the descriptor, otherwise mail notification
+	will hang.  These GUI programmers never figured out that
+	the child process must close the writing end of a pipe.
+	File:  sendmail/sendmail.c.
+
+20000314
+
+	Feature: SASL authentication in the SMTP server and client.
+	Based on code contributed by Till Franke, SuSE.  Specify:
+	"smtpd_sasl_auth_enable = yes" and "smtp_sasl_auth_enable
+	= yes". The "permit_sasl_authenticated" UCE restriction
+	gives special treatment to authenticated clients.
+
+20000315
+
+	Workaround: added -blibpath option for AIX 4.x, to close
+	hole in case postdrop needs to be set-gid.
+
+20000320
+
+	Portability: FreeBSD 5.x added to the list of supported
+	systems (Mark Huizer).
+
+20000323
+
+	Portability: INSTALL.sh looks if sendmail is in /usr/lib
+	rather than in /usr/sbin.
+
+20000326
+
+	Bugfix: settings in one mysql configuration file would act
+	as the implicit defaults for the next one, which could be
+	confusing.  Patch by Scott Cotton. File: util/dict_mysql.c.
+
+	Robustness: limit the number of "junk" commands that can
+	be issued in an SMTP session (ex.: NOOP, VRFY, ETRN, RSET).
+	Problem report by Michael Ju. Tokarev @ tls.msk.ru.  Files:
+	global/mail_params.h, smtpd/smtpd.c.
+
+20000413
+
+	Portability: more MacOS X patches by Gerben Wierda.
+
+	Bugfix: RFC 822 requires the presence of at least one
+	destination message header. The cleanup daemon now generates
+	a generic "To: undisclosed-recipients:;" message header
+	when no destination header is present.  The header content
+	is specified with the undisclosed_recipients_header parameter.
+	Problem pointed out by Geoff Gibbs, UK-Human Genome Mapping
+	Project-Resource Centre.
+
+20000416
+
+	Workaround: allow <(comment)> as SMTP MAIL FROM address.
+
+20000417
+
+	The SASL authentication in the SMTP server and client works,
+	but only on Linux and Solaris, neither of which I wish to
+	run on my laptop.
+
+20000418
+
+	Added LMTP support to the smtp-source and smtp-sink utilities
+	so that I don't have to install Cyrus IMAP just to test
+	LMTP.
+
+20000419
+
+	Bugfix: removed the () from the tokenized representation
+	of RFC 822 comments, so that comments with \( or \) can be
+	unparsed correctly.  Problem reported by Bodo Moeller.
+
+20000423
+
+	Bugfix: mail_copy() could prepend > or . in the middle of
+	long lines. Found by code inspection.
+
+20000427
+
+	New code: unescape module that translates C escape sequences
+	into their equivalent character values.  File: util/unescape.c.
+
+	Feature: the pipe mailer now has a way to specify the output
+	record delimiter (for example, eol=\r\n). This is necessary
+	for transports that require CRLF instead of UNIX-style LF.
+
+20000502
+
+	In order to support timeouts more conveniently, VSTREAMs
+	now have built into them the concept of timeout.  Instead
+	of calling read() and write(), the low-level VSTREAM
+	interface now by default uses timed_read() and timed_write()
+	which receive a timeout parameter; vstream_ctl(stream,
+	VSTREAM_CTL_TIMEOUT...) sets the timeout deadline on a
+	stream, and vstream_ftimeout(stream) queries a stream for
+	timeout errors.  This change simplified timeout handling
+	considerably.  Files: util/vbuf.h, util/vstream.[hc],
+	global/smtp_stream.c, global/timed_ipc.c.
+
+20000504
+
+	Added application context to VSTREAMs, which is passed on
+	transparently to application-provided read/write routines.
+	vstream_ctl(stream, VSTREAM_CTL_CONTEXT...) sets the context.
+	Files:  util/vstream.[hc].
+
+	Added vstream_setjmp() and vstream_longjmp() support to
+	make exception handling more convenient. Turn on exception
+	handling with vstream_ctl(stream, VSTREAM_CTL_EXCEPT...).
+	Files:  util/vstream.[hc].
+
+	Cleaned up the smtp_stream module further and got rid of
+	the global state that limited the use of this module to
+	one stream per process. Files: global/smtp_stream.[hc].
+
+20000505
+
+	Bugfix: the SMTP server now flushes unwritten output before
+	tarpit delays, to avoid protocol timeouts in pipelined
+	sessions when a client causes lots of errors. Found by
+	Lamont Jones, HP. File:  smtpd/smtpd_chat.c.
+
+	Finished the LMTP client, which is based on a modified
+	version of the SMTP client by Philippe Prindeville, Mirapoint,
+	Inc., later modified by Amos Gouaux, UTDallas, and then
+	Wietse ripped it all up again. Currently this talks LMTP
+	over TCP only.
+
+	Feature: override main.cf parameters in master.cf. Specify
+	"-o parameter=value" after the program name. This allows
+	you to selectively override myhostname etc. See also the
+	new smtp_bind_address parameter below.
+
+20000506
+
+	Convenience: the LMTP and SMTP clients now append the local
+	domain to unqualified nexthop destinations. This makes it
+	more convenient to set up transport maps. Files:
+	lmtp/lmtp_addr.c, smtp/smtp_addr.c.
+
+	Sendmail compatibility: the Postfix SMTP client now skips
+	servers that greet the client with a 4xx or 5xx status
+	code.  To disable, set both smtp_skip_4xx_greeting and
+	smtp_skip_5xx_greeting to "no".
+
+20000507
+
+	Portability: NetBSD has migrated to /etc/mail/aliases. We
+	can expect to see this happen more often when systems start
+	shipping Sendmail 8.10. File: util/sys_defs.h
+
+	Updated LDAP code by John Hensley, with support for
+	dereferencing of LDAP aliases, which have nothing to do
+	with Postfix aliases.
+
+	Feature: "smtp_bind_address=x.x.x.x" specifies the source
+	IP address for SMTP client connections. Specify in master.cf
+	as "smtp -o smtp_bind_address=x.x.x.x" in order to give
+	different delivery agents different source addresses.
+
+20000510
+
+	Cleanup: mailbox_transport did not work with the lmtp
+	delivery agent. This dates back to when Postfix used empty
+	nexthop information to indicate that a destination was
+	local. File: global/deliver_pass.c.
+
+	Bugfix: configuration parameters for one mysql dictionary
+	would become default settings for the next one. File:
+	dict_mysql.c. This patch was merged into Postfix a while
+	back but apparently that Postfix version was nuked when
+	other parts were redesigned. Update by Scott Cotton.
+
+	Bugfix: some Postfix delivery agents would abort on addresses
+	of the form `stuff@.' which could be generated only locally.
+	Found by Patrik Rak. File:  trivial-rewrite/resolve.c.
+
+	Third-party Berkeley DB support for HP-UX by Lamont Jones.
+	File: makedefs.
+
+20000511
+
+	Bugfix: Postfix would incorrectly reject domain names with
+	adjacent - characters. File: util/valid_hostname.c.
+
+	Bugfix: the 20000505 pipeline tarpit delay flush was wrong
+	and caused the client and server to get out of phase. Yuck!
+
+20000513
+
+	Feature: VSTREAMs now have the concept of last fill/flush
+	time, which is needed to prevent timeouts with pipelined
+	SMTP sessions as detailed in the next item.
+
+	Bugfix: delayed SMTP command/reply flushing to prevent
+	sender delays from accumulating too much and causing timeouts
+	with pipelined sessions.  For example, client-side delays
+	happen when a client does DNS lookups to replace hostname
+	aliases in MAIL FROM or RCPT TO commands; server-side delays
+	happen when an UCE restriction involves a time-consuming
+	DNS lookup, or when a server generates tarpit delays.
+	Files:  lmtp/lmtp_proto.c, smtp/smtp_proto.c, smtpd/smtpd_chat.c.
+
+	Portability: define ANAL_CAST for compilation environments
+	that reject explicit casts between pointers and integral
+	types. File: util/sys_defs.h, master/*server.c.  Upon closer
+	investigation, this turned out to be the result of someone's
+	compiler configuration preferences.  Therefore the change
+	is likely to go away after a code cleanup.
+
+20000514
+
+	Feature: mysql client support for multi-valued queries
+	(select email, email2 from aliastbl where username='$local')
+	By Loic Le Loarer @ m4x.org. File: util/dict_mysql.c.
+
+	Finalized the delayed SMTP command/reply flushing code in
+	the SMTP and LMTP clients after lots of testing and review.
+
+20000520
+
+	Robustness: upon receipt of mail, map the mailer-daemon
+	sender address back into the magic null string. File:
+	cleanup/cleanup_envelope.c.
+
+20000524
+
+	Bugfix: the code for masquerade_exceptions was case sensitive.
+	Reported by Eduard Vopicka.  File: cleanup/cleanup_masquerade.c.
+
+20000526
+
+	Feature: experimental queue manager by Patrik Rak with a
+	fancy pre-emptive scheduling algorithm that improves delivery
+	performance of mail with few recipients. This queue manager
+	is made available as "nqmgr".
+
+20000528
+
+	Feature: the SMTP client SASL password file can contain
+	entries for destination domain names (the address remote
+	part) not just mail server hostnames. File: smtp_sasl_glue.c.
+
+	Feature: smtpd_sasl_local_domain parameter (default:
+	$myhostname) to specify the local SASL authentication realm.
+	File: smtpd_sasl_glue.c.
+
+	Feature: specify "body_checks=regexp:/file/name" for a very
+	crude one line at a time message body content filter.  This
+	feature uses the same filtering syntax as the header_checks
+	feature.  File:  cleanup/cleanup_message.c. See also the
+	conf/sample-filter.cf file.
+
+20000530
+
+	Feature: full content filtering through external software.
+	This uses existing interfaces for sending mail to the
+	external content filter and for injecting it back into
+	Postfix.  Details in FILTER_README.  Files: pickup/pickup.c,
+	smtpd/smtpd.c, qmgr/qmgr_message.c.
+
+20000531
+
+	More SASL feedback by Liviu Daia, regarding the use of
+	authentication realms. File smtpd/smtpd_sasl_glue.c.
+
+	Added a simple shell-script based content filtering example
+	to the FILTER_README file.
+
+	Content filtering support for nqmgr by Patrik Rak.  File:
+	nqmgr/qmgr_message.c.
+
+	Renamed "content inspection" etc. to "content filtering"
+	in anticipation of a new hook for content inspection that
+	only inspects mail without re-injecting it into Postfix.
+
+20000601
+
+	Feature: limit the size of pipe mailer deliveries with the
+	size=nnn command-line attribute. Patch by Andrew McNamara.
+
+20000603
+
+	Bugfix: don't try to do SASL authentication when running
+	in stand-alone (sendmail -bs) mode. Fix by Liviu Daia.
+
+	Bug: the unauthorized pipelining test fails with single
+	recipient mail when smtpd_delay_reject = yes.
+
+20000617
+
+	Bugfix: conf/sample-ldap.cf was no longer up to date with
+	reality. Patch by Lamont Jones, HP.
+
+	Bugfix: the maildir delivery routine left temporary files
+	lying around after unsuccessful delivery (problem reported
+	by Brian Laughton @ Corp.Axxent.Ca).
+
+20000621
+
+	AIX 4.x had POSIX regular expression support all the time
+	I was working on Postfix. Better find out late than never.
+
+20000623
+
+	Bugfix: the SMTP server did not reset the so-called junk
+	command counter after successful delivery (Mark Hoffman @
+	wallst.com).  File: smtpd/smtpd.c.
+
+20000625
+
+	Cleanup: remove Content-Length from incoming mail. The
+	sender has no authority over the format of mail as stored
+	by the receiving system. File: global/header_opts.h.
+
+	Feature: rewrite Mail-Followup-To: as sender. Files:
+	global/header_opts.[hc].
+
+	Cleanup: rewrite Reply-To, Errors-To, Return-Receipt-To as
+	sender, so that address masquerading works as expected.
+	Files: global/header_opts.c.
+
+	Feature: specify "require_home_directory = yes" to prevent
+	mail from being delivered to a user whose home directory
+	is not mounted. File: local/dotforward.c.
+
+	Cleanup: the pipe deliver agent no longer appends a blank
+	line when the F flag (prepend From_ line) is specified.
+	Specify the B flag if you need that blank line. The local
+	delivery agent no longer appends a blank line to mail that
+	is delivered to external command. Files:  pipe/pipe.c,
+	global/mail_copy.[hc].
+
+20000708
+
+	Portability: support for NEXT/OPENSTEP requires extra
+	include file in util/watchdog.c (Masaki Murase).
+
+20000715
+
+	Added macros to turn on vstream/vstring/etc. format string
+	checking by gcc, in addition to the checking that was
+	already implemented with printfck.  File: util/sys_defs.h,
+	the macros for PRINTFLIKE and SCANFLIKE. Problem - unlike
+	the printfck tool, gcc finds format argument type mismatches
+	only in code that isn't #ifdef-ed out.
+
+20000718
+
+	Robustness: make_dirs() now continues when a missing
+	directory is created by another process.
+
+20000720
+
+	Feature: the queue manager now logs the number of recipients
+	when opening a queue file (a zero recipient count is logged
+	with older queue files). File: global/opened.c.
+
+20000726
+
+	Robustness: added watchdog_pat() routine to keep the watchdog
+	quiet if a client stays connected for a lot of time. Files:
+	util/watchdog.[hc], smtpd/smtpd.c.
+
+20000729
+
+	Robustness: if relayhost is specified but the host does
+	not exist, defer mail instead of bouncing it (which would
+	lose the mail if the bounce would have to be delivered to
+	that same non-existent relayhost). Problem reported by
+	Chris Cooper @ maths.ox.ac.uk. File: smtp/smtp_connect.c.
+
+20000821
+
+	Feature: added -r (replace key+value) option to postalias
+	and postmap.
+
+	Cleanup: smtpd now replies with 555 when the client sends
+	unrecognized RCPT TO parameters, as required by RFC 1869
+	(problem report by Robert Norris @ its.monash.edu.au).
+	File: smtpd/smtpd.c.
+
+20000822
+
+	Logging: the SMTP server's SASL code logs the authentication
+	method along with an authentication failure. Suggested by
+	Ronald F. Guilmette @ monkeys.com.
+
+	Workaround: some systems have file size resource limits
+	that cannot be represented with the off_t type that is used
+	by standard functions such as lseek(2). Problem reported
+	by Blaz Zupan @ amis.net.
+
+20000823
+
+	Feature: all this discussion about when to reject mail and
+	when not made me decide to implement a TCP-based map type
+	so that it becomes relatively simple to implement dynamic
+	access controls, for example, hold off mail from an unknown
+	client or sender until we have completed some investigation,
+	after which we will either reject or accept.
+
+	However, this code is turned off until it is finished.
+
+20000905
+
+	Robustness: the dns client now rejects malformed domain
+	names rather than depending on the DNS to report that the
+	name does not exist. Linux returns a rather misleading
+	server failure code as found out by Patrik Rak. File:
+	dns/dns_lookup.c.
+
+20000911
+
+	Feature: added IGNORE keyword to header_checks and body_checks
+	to pretend that certain data does not exist. File:
+	cleanup/cleanup_message.c.
+
+20000911
+
+	Bugfix: the SASL code did not allow MAIL FROM... AUTH=sender
+	without prior authentication. The RFC allows this, although
+	one wonders what the reasoning behind this is. File:
+	smtpd/smtpd_sasl_proto.c.
+
+20000913
+
+	Bugfix: the rmail script did not handle remote UUCP systems
+	that send a from_ line with unqualified envelope sender.
+	Reported by Luciano Mannucci.
+
+	Compatibility: don't insert Sender: header lines. Sendmail
+	has not done so for at least 10 years, if it ever did.
+	Problem reported by Brad Knowles. File: cleanup/cleanup_message.c.
+
+20000916
+
+	Bugfix: when propagating an address extension in a virtual
+	or canonical mapping, cleanup accesses memory that is no
+	longer allocated. This can happen when the result address
+	length is more than 100 characters.  Problem reported by
+	Adi Prasaja @ satunet.com. File: global/mail_addr_crunch.c.
+
+	Bugfix: fixed a misleading error message when the cleanup
+	server reaches the queue file size limit. Fix by Robby
+	Griffin @ MIT.EDU.  File: cleanup/cleanup_extracted.c.
+
+20000917
+
+	Bugfix: postalias -i would complain about duplicate entries
+	for the Sendmail-compatible @ entry and for the NIS-compatible
+	YP_LAST_MODIFIED and YP_MASTER_NAME entries.
+
+20000918
+
+	Gross hack: prevent looping on a bad recipient by always
+	forwarding recipients in :include: files to a new mail
+	delivery request, even when owner-listname is not set.
+	File: local/recipient.c.
+
+20000919
+
+	Convenience: INSTALL.sh now imports default settings from
+	the process environment, in order to make scripting easier.
+
+	Robustness: INSTALL.sh now systematically skips over CVS,
+	RCS and SCCS cruft.
+
+	Portability: another fix for NEXTSTEP (Masaki MURASE).
+	File: util/spawn_command.h.
+
+20000920
+
+	Cleanup: in a transport table entry, do not ignore port
+	numbers specified as [host]:port. In fact, this is now
+	becoming the preferred form, in order to avoid parsing
+	problems with IPV6 addresses. Postfix supports both forms,
+	but future versions will print a warning for the old form.
+	Problem reported by Claus Fischer @ werhats.at
+
+	Bugfix: missing initialization for state->sasl_method can
+	cause permit_sasl_authenticated to always succeed.  Report
+	and fix by Lutz Jaenicke @ aet.TU-Cottbus.DE.
+
+	FAQ: added notes about how to delete, copy or restore queue
+	files in a safe manner.
+
+20000921
+
+	File reorganization. No code change except Makefiles. All
+	sources are pushed down by one directory level to keep file
+	listings usable. Released as 20000922, so that I have a
+	reference to run "diff -cr against.
+
+	Bugfix: the spawn service was installed without man pages.
+
+	Portability: MacOSX hints and tips by Joe Block, University
+	of Central Florida School of Optics/CREOL
+
+	Portability: The MacOSX gcc compiler does not understand
+	the new printf_like/scanf_like attributes. File: util/sys_defs.h.
+
+20000922
+
+	nqmgr update from Patrik Rak for the changed queue manager
+	to delivery agent protocol.
+
+	Lame feature: syslog_facility parameter to control where
+	syslogd sends Postfix logging (default: syslog_facility =
+	mail).  However, errors during command-line parsing are
+	still logged with the default syslog facility, as are errors
+	while processing the main.cf file (surprise).  Based on
+	code by Andrew McNamara.
+
+20000923
+
+	Cleanup: new bounce logfile API so that Postfix can change
+	to an extensible bounce logfile format with per-recipient
+	sender addresses (needed for VERP and for reporting local
+	list delivery problems to the list owner) and other
+	attributes.  File:  global/bounce_log.[hc].
+
+	Cleanup: replaced the ad-hoc logfile parsing code in showq
+	by something that uses the generic bounce logfile API.
+
+20000924
+
+	Feature: Postfix bounced mail and delayed mail notifications
+	now have the standard RFC 1894 form (DSN). The bounce
+	service now uses the generic bounce logfile API.  File:
+	bounce/bounce_notify_service.c, bounce/bounce_notify_util.c.
+
+	Cleanup: deleted the per-recipient bounce protocol.  Future
+	bounce logfiles will support per-recipient bounce addresses.
+	Files:  global/bounce.c, bounce/bounce_recip_service.
+
+20000925
+
+	Workaround: sendmail allows MAIL FROM and RCPT TO envelope
+	addresses like <the dude <dude@site>> so we will never get
+	rid of them. To disallow, specify "strict_rfc821_envelopes
+	= yes".  File: smtpd/smtpd.c.
+
+20000926-20001003
+
+	Feature: a "flush" server that keeps per-destination records
+	of deferred mail. It is the basis of a faster ETRN and
+	"sendmail -qRsite" implementation. This code was rewritten
+	half a dozen times.
+
+20000928
+
+	Bugfix: the stricter dns_lookup() argument checks revealed
+	that Postfix was doing DNS lookups for domain literals
+	([ip.address]) when expanding aliases in MAIL FROM and RCPT
+	TO address parameters.  Reported by Jim Littlefield. File:
+	smtp/smtp_unalias.c.
+
+	Documentation: added text on the biff=yes/no parameter to
+	conf/sample-local.cf (text provided by Paul Wagland,
+	relational-consultancy.com.
+
+	Robustness? Log errors from SASL library code as warnings
+	not as fatal errors. Files: smtp*/*glue.c.
+
+20001001
+
+	Feature: in master.cf, specify ? after wakeup time to avoid
+	waking up services that aren't being used.
+
+20001003
+
+	Feature: the fast flush refresh and purge time interval
+	parameters can now be specified in user-specified units by
+	providing an appropriate suffix:  s (seconds), m (minutes),
+	h (hours), d (days), w (weeks).  unit.  This was needed so
+	that I could test the flush server code in a reasonable
+	way (its timeouts are normally specified in days or hours,
+	and I don't have that much time for testing).  Other Postfix
+	time interval parameters will be migrated as time permits.
+	Files:  conf/sample-flush.cf, global/mail_conf_time.c,
+	postconf/postconf.c.
+
+	Unfeature: qmgr_hog_factor is now disabled by default. It
+	was just too confusing. If you don't know what this means,
+	do not worry.
+
+20001005
+
+	Cleanup: after "postfix reload" do not penalize mail that
+	was in the active queue, but make it ready for immediate
+	delivery so that ETRN etc. works as intended. Files:
+	*qmgr/qmgr.c, *qmgr/qmgr_active.c.
+
+	Portability: Redhat 7 library interfaces have changed
+	incompatibly, which breaks existing software. File makedefs.
+
+	Consistency: the fallback_relay parameter did not understand
+	the [] or host:port syntax, and there was no way to suppress
+	MX record lookups. Files: smtp/smtp_addr.c, smtp/smtp_connect.c.
+
+	Convenience: you can now specify multiple SMTP destinations
+	in the relayhost or fallback_relay configuration parameters.
+	The specified destinations will be tried in the specified
+	order. File:  smtp/smtp_connect.c.
+
+	Many typographical corrections by Matthias Andree.
+
+20001024
+
+	Documentation: the canonical, virtual etc. manual pages
+	did not document the effect of leading whitespace.
+
+20001025
+
+	Bugfix: virtual map expansion stopped too early with
+	self-referential aliases. Reported by Michael Douglass @
+	datafoundry.net. File: cleanup/cleanup_map1n.c.
+
+20001026
+
+	Horror:  postmap and postalias (newaliases) silently lose
+	the file lock while building a lookup table with Berkeley
+	DB 2.x and later on Solaris, HP-UX, IRIX, and UNIXWARE.
+	The result is that table lookups fail while the table is
+	being built, so that mail is lost.  In order to avoid this
+	misbehavior one has to use an undocumented feature that is
+	NOT available with the DB1.85 compatibility interface.
+	Therefore, Postfix now supports three Berkeley DB programming
+	interfaces of increasing complexity. File: util/dict_db.c.
+
+	Bugfix: some character manipulations were not portable for
+	signed/unsigned characters. Files: global/quote_821_local.c,
+	global/quote_822_local.c.
+
+	Workaround: apparently, some software sends SMTP mail that
+	begins with "From sender time-stamp". Sendmail silently
+	ignores such RFC violating garbage, and therefore Postfix
+	needs to jump another hoop.  File: smtpd/smtpd.c.
+
+20001028
+
+	Bugfix: the flush server tried to access config files after
+	going to the chroot jail. Found by Lutz Jaenicke, TU-Cottbus.DE.
+	File: flush/flush.c.
+
+	Update: revised LDAP module from primary maintainer John
+	Hensley, with contributions from many other people. Files:
+	util/dict_ldap.c, LDAP_README.
+
+	Update: LINUX2 chroot setup script by Matthias Andree,
+	uni-dortmund.de.
+
+	Feature: specify unix:/path/name for LMTP connections over
+	UNIX-domain sockets, and specify inet:host or inet:host:port
+	for IPV4. If no unix: or inet: is specified, IPV4 is assumed.
+	File: lmtp/lmtp_connect.c.
+
+	Feature: added UNIX-domain support to the smtpstone test
+	programs in order to test the LMTP client UNIX-domain
+	support.
+
+20001030
+
+	Bugfix: further testing in preparation for 19991231-pl10
+	revealed that the DB map code was now broken for every
+	platform.
+
+20001031
+
+	Performance: the slow start (gradually increase number of
+	parallel connections to the same site) was too gentle and
+	Postfix would back off too quickly. Files: qmgr/qmgr_queue.c
+	and nqmgr/qmgr_queue.c.
+
+20001101
+
+	FAQ update by Ralph Hildebrandt.
+
+20001104
+
+	Portability: RedHat Linux has changed incompatibly, again.
+	Fixed with the help of Matthias Andree.  File: makedefs.
+
+20001109
+
+	Cleanup: changed prototype of internal function that did
+	not return a useful result. File: src/util/vstream_popen.c.
+
+20001110
+
+	Workaround: the Debian post install script passes an open
+	file descriptor into the master server and waits forever.
+	Reported by Lamont Jones. File: master/master.c.
+
+20001114
+
+	Compatibility: added sendmail -G (gateway submission) option
+	for compatibility with the sendmail rmail command. Requested
+	by David Gilbert, Velocet Communications.
+
+20001116
+
+	Documentation: added MAILER-DAEMON to the list of sample
+	masquerade_exceptions settings in conf/sample-rewrite.cf.
+	Suggested by Karl O. Pinc, pop.artic.edu.
+
+	Performance: the slow start (gradually increase number of
+	parallel connections to the same site) was too gentle and
+	Postfix would back off too quickly. Files: qmgr/qmgr_queue.c
+	and nqmgr/qmgr_queue.c. Yup, changed the same code, again.
+	We now allow for a margin above the actual concurrency,
+	with the size of the initial destination concurrency.
+	Final solution by Patrik Rak.
+
+	Bugfix: the recipient home directory test broke mailbox_transport
+	support for non-UNIX recipients.  File:  local/recipient.c.
+
+20001117
+
+	Robustness: additional integrity tests for the nqmgr by
+	Patrik Rak. File: nqmgr/qmgr_message.c.
+
+20001118
+
+	Bugfix: the new LDAP client code did not work properly if
+	the new ldap_domain parameter was not specified. LaMont
+	Jones, HP.  File: util/dict_ldap.c.
+
+	Feature: the soft_bounce safety net is extended to the SMTP
+	server. With "soft_bounce = yes", The SMTP server changes
+	all 5xx (reject) replies into 4xx (try again) replies.
+
+	Documentation: the virtual(5) man page now documents both
+	Postfix-style virtual domains and Sendmail-style virtual
+	domains, including their interaction with local usernames,
+	aliases and mailing lists. Hopefully, this ends some of
+	the confusion surrounding virtual domain support. Updated
+	several FAQ entries concerning virtual domain support.
+
+	Documentation: added FAQ entry for the biff service.
+
+20001119
+
+	Bugfix: per-destination queue names were case sensitive so
+	that the same site could have multiple queues.  Reported
+	by Patrik Rak. Files: *qmgr/qmgr_message.c.
+
+20001120
+
+	Bugfix: per-destination deferred mail logfiles were case
+	sensitive so that the same site could have multiple deferred
+	mail logfiles, so that not all mail would be flushed with
+	ETRN. Reported by Ralph Hildebrandt. Files:  flush/flush.c.
+
+	Portability: added (int) casts to printf-like arguments
+	that specify the width of %*letter conversions.  On some
+	systems, sizeof and pointer difference expressions are
+	wider than an int.  Reported by Valentin Nechayev @ lucky.net.
+
+20001121:
+
+	Compatibility: Postfix now retries delivery when an external
+	command is killed by a signal, because people expect such
+	behavior from Sendmail. File: global/pipe_command.c.
+
+20001123-30
+
+	Feature: mailbox locking is now configurable. The configuration
+	parameter name is "mailbox_delivery_lock". Depending on
+	the operating system one can specify one or more of "flock",
+	"fcntl" and "dotlock". Use "postconf -l" to find out what
+	locking methods Postfix supports. The default setting is
+	system dependent.  All mailbox file opens are now done by
+	one central mbox_open() routine. This affects the operation
+	of the postlock command, and of local delivery to mailbox
+	or /file/name.  Files: util/safe_open.c, util/myflock.c,
+	global/deliver_flock.c, global/mbox_conf.c, global/mbox_open.c.
+	local/mailbox.c, local/file.c, postlock/postlock.c.
+
+	Compatibility: the old sun_mailtool_compatibility parameter
+	is being phased out. It still works (by turning off
+	flock/fcntl locks), but logs a warning as a reminder that
+	it will go away.
+
+	Compatibility: when delivering to /file/name, the local
+	delivery agent now logs a warning when it is unable to
+	create a /file/name.lock file, and then delivers the mail
+	(older Postfix versions would silently deliver).
+
+20001202
+
+	Feature: specify "smtp_never_send_ehlo = no" to disable
+	ESMTP.  Someone asked for this long ago. Files:  smtp/smtp.c,
+	smtp/smtp_proto.c.
+
+	Feature? Bugfix? The smtp client now skips server replies
+	that do not start with "CODE SPACE" or with "CODE HYPHEN",
+	and flags them as protocol errors. Older versions silently
+	treat "CODE TEXT" as "CODE SPACE TEXT".  File:  smtp/smtp_chat.c.
+
+20001203
+
+	Documentation: postmap(1) and postalias(1) did not document
+	the process exit status for "-q key".
+
+20001204
+
+	Bugfix: the Postfix master daemon no longer imported
+	MAIL_CONF and some other necessary environment parameters.
+	Postfix now has explicit "import_environment" and
+	"export_environment" configuration parameters that control
+	what environment parameters are shared with non-Postfix
+	processes. Files: util/clean_env.c, util/spawn_command.c,
+	util/vstream_popen.c, global/pipe_command.c, and everything
+	that invokes this code.
+
+20001208
+
+	Bugfix: while processing massive amounts of one-recipient
+	mail, qmgr could deadlock for 10 seconds while sending a
+	bounce message. All queue manager bounce send requests are
+	now implemented asynchronously.  Files: global/abounce.[hc]
+	(asynchronous bounce client), qmgr/qmgr_active.c.  Problem
+	reported by El Bunzo (webpower.nl) and Tiger Technologies
+	(tigertech.com).
+
+20001209
+
+	Feature: mailbox_transport and fallback_transport can now
+	have the form transport:nexthop, with suitable defaults
+	when either transport or nexthop are omitted, just like in
+	the Postfix transport map. This allows you to specify for
+	example, "mailbox_transport = lmtp:unix:/file/name". File:
+	global/deliver_pass.c.
+
+20001210
+
+	Bugfix: the local_destination_concurrency_limit paramater
+	no longer worked as per-user concurrency limit but instead
+	worked as per-domain limit, so that the limit of "2" in
+	the default main.cf files resulted in poor local delivery
+	performance.  Files:  qmgr/qmgr_message.c, qmgr/qmgr_deliver.c.
+	Problem reported by David Schweikert (ee.ethz.ch) and Dallas
+	Wisehaupt (cynicism.com).
+
+20001210
+
+	Feature: support for MYSQL connections over UNIX-domain
+	sockets by Piotr Klaban.  Files: util/dict_mysql.c,
+	MYSQL_README.
+
+20001211
+
+	Small dirt: postconf -m produced too much output due to a
+	missing "else", and the optional SASL code needed a fix
+	for the changed name_mask API.
+
+20001212
+
+	Workaround: due to an error, record type L for "filter
+	transport name" was the same as that for the already existing
+	record type L for "record not ending in newline", causing
+	the pickup daemon to discard all records not ending in
+	newline. The code cannot be changed without breaking
+	compatibility with queued mail, so the pickup server is
+	changed to discard type L records only from the message
+	envelope, not from the content. File: pickup/pickup.c.
+
+20001213
+
+	Bugfix: dict_ldap did not properly initialize a handle
+	after connection timeout. Problem reported by Alain Thivillon.
+	File: util/dict_ldap.c.
+
+20001214
+
+	Feature: local_transport and default_transport now also
+	understand the transport[:destination] notation, so that
+	all transport config parameters are similar again. File:
+	trivial-rewrite/resolve.c, trivial-rewrite/transport.c.
+
+	Code cleanup: mailbox_transport and fallback_transport no
+	longer allow the user to omit the transport part of a
+	transport:destination specification. That just did not make
+	any sense at all. The :destination part is still optional.
+	File: global/deliver_pass.c.
+
+	Feature: most time-related configuration parameters take
+	a one-letter suffix that specifies the time unit:  s
+	(second), m (minutes), h (hours), d (days), w (weeks).
+	"postconf -d" output includes the default time unit. Files:
+	many.
+
+	Code cleanup: in a CONFIG_TIME_TABLE, the default time unit
+	is now always the last character of a default time value.
+	It is no longer necessary to specify the default time unit
+	separately. This change means that it will not be possible
+	to specify default values in the form of function calls,
+	but that was unused anyway.  Files: global/mail_conf_time.c,
+	and user code.
+
+20001217
+
+	Bugfix: reorganized some code in the MYSQL client to end
+	a number of memory allocation/deallocation problems.  This
+	code needs more work. File: dict_mysql.c.
+
+20001218
+
+	Bugfix: the MYSQL client did not provide function pointers
+	for unimplemented operations, causing "postmap -d" to dump
+	core instead if issuing an error message. This is what I
+	get for accepting code that I cannot test myself.
+
+20001221
+
+	Code cleanup: configuration parameters that are $name
+	expanded at run-time now have their own data type hierarchy
+	instead of being piggy-backed on top of strings that are
+	$name expanded at program initialization time.  Files:
+	global/mail_conf.h, global/mail_conf_raw.c, and code that
+	calls it.
+
+20001230
+
+	Update: replaced the default rbl.maps.vix.com setting by
+	the current blackholes.mail-abuse.org.
+
+20010102
+
+	Code cleanup: the queue manager is a bit greedier with
+	allocating a delivery agent. Problem pointed out by Patrik
+	Rak. All bugs in the solution are mine.  Files:
+	*qmgr/qmgr_active.c.
+
+20010105
+
+	Bugfix: the FILTER_README shell script example did not
+	correctly pass exit status to the parent.
+
+	Bugfix: soft errors in client hostname lookups would be
+	treated as hard errors. Fix by Michael Herrmann
+	(informatik.tu-muenchen.de). File: smtpd/smtpd_peer.c.
+
+20010110
+
+	Bugfix: the mkdir() EEXIST race condition workaround was
+	not complete.  Matthias Andree, Daniel Roesen.  Files:
+	global/mail_queue.c, util/make_dirs.c.
+
+20010111
+
+	Portability: IRIX 6.5.10 defines sa_len as a macro, causing
+	a name collision with a variable used by Postfix. Roberto
+	Totaro, enigma.ethz.ch. File:  smtpstone/smtp-source.c.
+
+20010116
+
+	Bugfix: REJECT by header/body_checks was flagged in smtpd
+	as a bounce, should be policy, in order to make postmaster
+	notifications more consistent. File: smtpd/smtpd.c.
+
+	Merged updated chroot setup procedure by Matthias Andree.
+	Files: examples/chroot-setup/LINUX2.
+
+20010117
+
+	Formatting: changed the seconds and days formats in the
+	"your mail is delayed" text so that it does not switch to
+	scientific notation. File: bounce/bounce_notify_util.c.
+
+20010119
+
+	Feature: SASL support for the LMTP client. Recent CYRUS
+	software requires this for Postfix over TCP sockets.
+
+20010120
+
+	Bugfix: the 20001005 revised fallback_relay support caused
+	Postfix to send mail to the fallback even when the local
+	machine was an MX host for the final destination. Result:
+	mailer loop. Found by Laurent Wacrenier (teaser.fr).  Files:
+	smtp/smtp_connect.c, smtp/smtp_addr.c.
+
+20010121
+
+	Workaround: specify "broken_sasl_auth_clients = yes" in
+	order to support old Microsoft clients that implement a
+	non-standard version of RFC 2554 (AUTH command).
+
+	Workaround: Lotus Domino 5.0.4 violates RFC 2554 and replies
+	to EHLO with AUTH=LOGIN. File: smtp/smtp_proto.c.
+
+20010125
+
+	Code cleanup: wrote creator/destructor for dictionary
+	objects that provides default methods that trap all attempts
+	to perform an unimplemented operation. Based on an ansatz
+	by Laurent Wacrenier (teaser.fr).  Files: util/dict*.[hc].
+
+	Code cleanup: INSTALL.sh does not ask questions when stdin
+	is not connected to a tty (as in: make install</dev/null).
+	To automate a customized install, the script imports
+	environment variables for install_root etc.
+
+20010127
+
+	Workaround: randomize the delay between attempts to lock
+	a file, so that multiple bounce or defer servers are less
+	likely to retry all at the same time.  likely.  File:
+	util/rand_sleep.c, global/deliver_flock.c, global/dot_lockfile.c.
+
+20010128
+
+	Code cleanup: complaints about invalid or numeric hostnames
+	either provide specific context or are removed as redundant.
+	Files:  util/valid_hostname.c dns/dns_lookup.c.
+
+	Code cleanup: new mailbox_size_limit parameter (default:
+	20MB).  Until now, the mailbox size limit was the same as
+	the message size limit, due to artefact of implementation.
+	Files: global/mail_params.h, local/local.c.
+
+	Bugfix: fix for the ldap_domains parameter, both semantics
+	and documentation by LaMont Jones. Files:  LDAP_README,
+	conf/sample-ldap.cf, util/dict_ldap.c.
+
+	Update: merged in the virtual delivery agent by Andrew
+	McNamara.  See VIRTUAL_README for detailed examples.
+
+	Update: merged a re-vamped nqmgr by Patrik Rak.
+
+20010129
+
+	Tweak: several little nqmgr tweaks by Patrik Rak. Files:
+	global/mail_params.h, nqmgr/qmgr_job.c.
+
+	Bugfix: the virtual delivery agent did not save maps_find()
+	results timely. J?rgen Thomsen, postfix.jth.net. File:
+	virtual/mailbox.c.
+
+	Security: disallow regexp tables in the virtual delivery
+	agent.  The $1 etc. substitution mechanism gives too much
+	power to the sender. File: virtual/mailbox.c.
+
+	Cleanup: clarified documentation and boundary cases in the
+	random_sleep() routine.
+
+	Bugfix: the MISSING_USLEEP feature was used backwards.
+	Patrik Rak. File: util/random_sleep.c.
+
+20010130
+
+	Workaround: Linux usleep() is void, BSD/Solaris usleep()
+	returns int, don't use it. File util/random_sleep.c.
+
+	Made local maildir bounce/defer handling mode consistent
+	with local mailbox delivery. File local/maildir.c.
+
+	The smtp client now defers delivery when all MX hosts have
+	no A record. File: smtp/smtp_addr.c
+
+	Bundled the man2html and postlink quick hacks so people
+	can do their own manual page processing. See scripts in
+	the mantools directory.
+
+	Documentation: updated the reference to sendmail in the
+	html/index.html page.
+
+	Documentation: added note about the Cisco PIX "fixup smtp"
+	bug that causes mail delivery problems when "." and "CRLF"
+	arrive in separate packets. File:  html/faq.html.
+
+20010201
+
+	Bugfix: another missing initialization in the mysql client.
+	File: util/dict_mysql.c.
+
+	Sanitized time routine by Patrik Rak, to make his nqmgr
+	robust against people who set their clock back.  Files:
+	util/sane_time.[hc].
+
+	Bumped the default mailbox file size limits to 50MB.
+
+20010202
+
+	Bugfix: fixed the way the master resets the file size limit
+	to avoid problems when a Postfix daemon updates a queue
+	file.  The file size limit is now increased to INT_MAX if
+	it is smaller than INT_MAX, so that it is less likely to
+	interfere than the old setting of message_size_limit.
+
+	Feature: disable mailbox size limits for the local and
+	virtual delivery agents by setting mailbox_size_limit or
+	virtual_mailbox_limit to zero.
+
+20010203
+
+	Update: null candidate patch from Patrik Rak. Files:
+	nqmgr/qmgr_entry.c nqmgr/qmgr_job.c nqmgr/qmgr_message.c.
+
+	Cleanup: added one gruesome command to the postlink script
+	for hyperlinking nroff manual page output. Word abbreviation
+	broke some <a href...> </a> instances across line boundaries.
+	sed(1) is an amazing tool.  File: mantools/postlink.
+
+20010204
+
+	Laid the ground work for logging of table accesses. This
+	will give more insight into how Postfix uses its lookup
+	tables. User interface comes later.  File:  util/dict_debug.c.
+
+20010216
+
+	Bugfix: the pipe delivery agent expanded $size as if it
+	were a recipient, instead of expanding it as $nexthop or
+	as $sender. Reported by Michael Tokarev. File: pipe/pipe.c.
+
+20010221
+
+	Bugfix: poor LMTP performance for domains that are listed
+	in $mydestination, because Postfix would send one recipient
+	at a time, with multiple deliveries of recipients of the
+	same message in parallel; a similar problem could exist
+	with virus scanning and with firewall relay hosts that
+	forward mail for $mydestination to an inside machine. This
+	behavior is now changed to depend on the transport-specific
+	xxx_destination_recipient_limit parameter.  This also means
+	that you can now get qmail behavior for SMTP deliveries by
+	setting smtp_destination_recipient_limit=1.  File:
+	{qmgr,nqmgr}/qmgr_message.c.
+
+	Workaround: Solaris socketpair() can fail with EINTR. Added
+	a sane_socketpair.c module that joins the ranks of the
+	other sane_whatever workarounds. Reported by Andrew McNamara.
+	File: util/sane_socketpair.[hc]
+
+20010222
+
+	Documentation: the default main.cf file has a prominent
+	warning that mynetworks should be properly configured in
+	order to reject unauthorized mail relay requests from
+	strangers.
+
+	Documentation: the INSTALL document, section "mandatory
+	configuration file edits" has a section that explains that
+	mynetworks should be properly configured in order to reject
+	unauthorized mail relay requests from strangers.
+
+20010223
+
+	Documentation: the basic.html document has a section that
+	explains that mynetworks should be properly configured in
+	order to reject unauthorized mail relay requests from
+	strangers.
+
+	Feature: new "mynetworks_style" parameter that controls
+	how mynetworks (trusted networks) is derived from the
+	inet_interfaces (machine interfaces) setting. Specify
+	"class" for entire class A, B, C networks; "subnet" for
+	the local subnets only; or "host" for maximal privacy.
+	Files:  util/inet_addr_local.[hc], global/own_inet_addr.[hc],
+	global/mynetworks.[hc], postconf/postconf.c.
+
+	Portability: MACOSX patches by Gerben Wierda.
+
+	Portability: Solaris /dev/null is a symlink, which tripped
+	up the code to safely open a file before local delivery.
+	We now grudgingly allow symlinks owned by root. File:
+	util/safe_open.c.
+
+20010224
+
+	Bugfix: "postconf mynetworks" ignored the inet_interfaces
+	setting. That was a very old one. File: postconf/postconf.c.
+
+	INCOMPATIBLE CHANGE: POSTFIX NO LONGER RELAYS MAIL FOR
+	CLIENTS IN THE ENTIRE CLASS A/B/C NETWORK. POSTFIX BY
+	DEFAULT RELAYS MAIL FOR CLIENTS IN THE LOCAL SUBNETWORK.
+	Specify "mynetworks_style = class" to get the old behavior.
+
+20010225
+
+	Portability: master sigchld handler based on writing to a
+	pipe, so that the master wakes up from select(). Based on
+	code by Erik Forsberg, Linkoping University, Sweden.  File:
+	master/master_sig.c. Disabled until after the major release.
+
+	Code cleanup: Postfix should now run with no alias database.
+
+	Code cleanup: local_destination_recipient_limit and
+	local_destination_concurrency_limit have become first-class
+	configuration parameters. Files: global/mail_params.h,
+	*qmgr/qmgr.c, postconf/postconf.c.
+
+20010226
+
+	Documentation suggestions by Lars Hecking and Richard
+	Huxton, Matthias Andree and many others.
+
+	Code cleanup: some queue/transport operations need to be
+	moved, after the code cleanup of the recipient/concurrency
+	limit handling. Patrik Rak.  Files: *qmgr/qmgr_message.c.
+
+20010301
+
+	Feature: configurable name in syslog output (default:
+	"syslog_name = postfix") so that different Postfix instances
+	can be recognized by their logging. File: global/mail_task.c.
+
+20010313
+
+	Workaround for logic mismatch in nqmgr that was exposed
+	with the introduction of the asynchronous bounce client.
+	Patrik Rak.
+
+20010313
+
+	Bugfix: the RFC 822 untokenizer quoted newlines inside
+	comments. File: global/tok822_parse.c.
+
+20010316
+
+	Cleanup: removed an extraneous warning when a queue file
+	write error happened.
+
+20010321
+
+	Workaround: LMTP connection caching never worked for
+	destinations starting with unix: or inet:. File:
+	lmtp/lmtp_connect.c.
+
+20010322
+
+	Portability: Solaris <2.6 does not have srandom() and
+	random() in libc. File: util/rand_sleep.c. It does not have
+	to be cryptographically strong.
+
+	Bugfix: the fast ETRN flush server could not handle [ipaddr]
+	or domain names with one-character hostname part.  This
+	fix changes the destination to logfile name mapping, so
+	that you need to populate the new files with "sendmail -q".
+	The old files go away automatically. File:  flush/flush.c.
+
+20010327
+
+	Speed up mailq (sendmail -bp) display by flushing output
+	after each file.  File: showq/showq.c.
+
+	Portability: missing string.h includes, %p wants (void *),
+	Lamont Jones, HP.
+
+20010328
+
+	Bugfix: swapped logic caused cleanup to stall when the
+	queue file size exceeded the file size limit by less than
+	one the VSTREAM buffer size, so that the "file too big"
+	was detected after flushing the last queue file record.
+	File: cleanup/cleanup.c.
+
+20010329
+
+	Portability: workaround for missing prototype problem in
+	dict_ldap.c. This module should move to the global directory,
+	because it depends on Postfix main.cf parameter information.
+
+	Workaround: after sending a trigger message over a socket,
+	do not immediately close the client side, but close it from
+	a background thread that waits until the server closes the
+	socket first. This avoids trouble with socket implementations
+	that destroy a socket when the client closes a socket before
+	the server has received the client's data.  Files:
+	util/{inet,unix,stream}_trigger.c, util/events.c,
+	master/master_trigger.c, postkick/postkick.c.
+
+20010403
+
+	Workaround: the mysql library can return null pointers
+	rather than zero-length strings. File: util/dict_mysql.c.
+
+20010404
+
+	Ergonomics: log additional information about the reason
+	why "mail for XXX loops back to myself" when the local
+	machine is the best MX host. File: smtp/smtp_addr.c.
+
+20010406
+
+	Changed some noisy LDAP client warnings into optional
+	logging. LaMont Jones, util/dict_ldap.c.
+
+20010411
+
+	Bugfix: the SMTP server now replies with 550 instead of
+	503 when it receives the DATA command without having received
+	a valid recipient address. This is needed for the Sendmail
+	client-side pipelining implementation. Problem reported by
+	Lutz Jaenicke. File: smtpd/smtpd.c.
+
+	Cleanup: shut up if chattr fails on Reiserfs and other file
+	systems that do not support the respective attributes.
+	Files: conf/postfix-script-{no,}sgid.
+
+20010413
+
+	Ergonomics: Postfix applications now warn when a DB or DBM
+	file is out of date, and recommend to rebuild the table.
+	Files: util/dict_db.c, util/dict_dbm.c.
+
+20010414
+
+	Feature: specify a key of "-" to the postmap or postalias
+	-q or -d option, and the keys will be read from standard
+	input, one key per line. Files: postmap/postmap.c,
+	postalias/postalias.c.
+
+	Bugfix: with a non-default inet_interfaces setting, the
+	master ignored host information in master.cf host:port
+	settings.  Fix by Jun-ichiro itojun Hagino @ iijlab.net.
+	Files: master/master.h, master/master_ent.c.
+
+20010426
+
+	Bugfix: the SMTP server did not parse invalid MAIL FROM or
+	RCPT TO addresses such as <first last <user@domain>> the
+	way it was supposed to do.  I thought this was taken care
+	of years ago. File:  smtpd/smtpd.c.
+
+20010427
+
+	Bugfix: smtpd would reject mail instead of replying with
+	a 4xx temporary error code when, for example, an LDAP or
+	mysql server was unavailable. Remotely based on a fix by
+	Robert Kiessling @ de.easynet.net. File: smtpd/smtpd_check.c.
+
+20010429
+
+	Feature: the Postfix SMTP client now by default randomly
+	shuffles destination IP addresses of equal preference.
+	Specify "smtp_randomize_addresses = no" to disable.
+	Shuffling code by Elias Levy @ SecurityFocus.com Files:
+	dns/dns_rr.c, smtp/smtp_addr.c.
+
+20010501
+
+	Bugfix: The SMTP server's 550 in reply to DATA should be
+	a 554 response.  And it wasn't Sendmail. Claus Assman.
+
+	Bugfix: the INSTALL.sh test for non-interactive upgrade
+	broke rooted installations that specify settings via the
+	environment.  Simon Mudd.
+
+	Bugfix: mailq output is now really flushed one message at
+	a time. File: sendmail/sendmail.c.
+
+	Feature: "postsuper -d queueID" deletes one message queue
+	file; "postsuper -d -" reads zero or more queue IDs from
+	standard input, and deletes one instance of each file.
+	File: postsuper/postsuper.c.
+
+	Code cleanup: in order to make postsuper -d safe with a
+	running Postfix mail system, some routines had to be made
+	tolerant for sudden queue file disappearances.  Files:
+	global/deliver_request.c, *qmgr/qmgr_move.c.
+
+	Code cleanup: in order to make postsuper -d more usable,
+	the showq command was extended to safely list the possibly
+	world-writable maildrop directory.  File:  showq/showq.c.
+
+20010504
+
+	Feature: postsuper -d will also delete defer and bounce
+	logfiles when the named queue file is found.
+
+20010505
+
+	RFC 2821 feature: an SMTP server must reset all buffers
+	upon receipt of EHLO. File:  smtpd/smtpd_check.c.
+
+	RFC 2821 feature: an SMTP server must accept a recipient
+	address of "postmaster" without domain name. File:
+	smtpd/smtpd_check.c.
+
+	RFC 2821 recommendation: reply with 503 to commands sent
+	after 554 greeting. File:  smtpd/smtpd.c.
+
+	RFC 2821 recommendation: if VRFY is enabled, list it in
+	the EHLO response. File:  smtpd/smtpd.c.
+
+	RFC 2821 recommendation: SMTP clients should use EHLO.
+	The default setting of smtp_always_send_ehlo has changed
+	from 0 (send EHLO if server greets with ESMTP) to 1 (always
+	send EHLO). In all cases, Postfix falls back to HELO if
+	the server does not support EHLO. File: smtp/smtp_proto.c.
+
+20010507
+
+	Bugfix: with soft_bounce=yes, the SMTP server would log
+	5xx replies even though it would send 4xx replies to the
+	client (Phil Howard, ipal.net). File: smtpd/smtpd_check.c.
+
+20010515
+
+	Compatibility: Microsoft sends "AUTH=MBS_BASIC LOGIN".
+	Updated the parsing code in smtp/smtp_proto.c.  Problem
+	reported by Ralf Tessmann, Godot GmbH.
+
+20010520
+
+	Standard: deleted the non-standard "via" portion from
+	Received: headers generated by Postfix bounce or other
+	notification processes.  File: global/post_mail.c.
+
+	Robustness: eliminated stack-based recursion from the RFC
+	822 address parser. File: global/tok822_parse.c.
+
+	Standard: annotated the source code with comments based on
+	RFC 2821 and 2822. Not all the RFC changes make sense.
+
+	RFC 2821 recommendation: treat a RCPT 552 reply as if the
+	server sent 452. Files: smtp/smtp_proto.c, lmtp/lmtp_proto.c.
+
+	Cleanup: moved ownership of the debug_peer parameters from
+	the applications to the library, so that a Postfix shared
+	library does not suffer from undefined references.  Files:
+	smtp/smtp.c, lmtp/lmtp.c, smtpd/smtpd.c, global/mail_params.c.
+	LaMont Jones, for Debian.
+
+20010522
+
+	Feature: "postsuper -r queueID" re-queues a message, and
+	"postsuper -r ALL" re-queues all mail. The message is moved
+	to the maildrop queue so that the pickup daemon will copy
+	it to a new queue file, and so that address rewriting will
+	be done again. This is useful after changes of address
+	rewriting or virtual mappings.
+
+	Feature: "postsuper -d ALL [queue-name]" deletes a bunch
+	of mail.
+
+20010523
+
+	Feature: "postsuper -s" (which is done by default) renames
+	queue files whose name (queue ID) does not match the message
+	file inode number.
+
+	Bugfix: memory leak in the LDAP client module. Alain
+	Thivillon, France Teaser - Groupe Firstream.
+
+20010525
+
+	Portability: gcc 2.6.3 does not have __attribute__ (Clive
+	Jones, dgw.co.uk). File: util/sys_defs.h.
+
+	Bugfix: the SMTP and LMTP clients claimed that a queue file
+	needed to be delivered again (even when all recipients were
+	erased from the queue file) when no QUIT or RSET reply was
+	received (by default, this does not happen with SMTP mail
+	because the SMTP client does not wait for QUIT replies and
+	does not send RSET to deliver mail).  As a result of the
+	same bug the LMTP client followed a dangling pointer when
+	sending QUIT after process idle timeout while the LMTP
+	server had disconnected.  Files:  smtp/smtp_proto.c,
+	lmtp/lmtp_proto.c.
+
+20010526
+
+	newaliases no longer complains when an empty list is
+	specified with the alias_database configuration parameter.
+	File:  sendmail/sendmail.c.
+
+20010529
+
+	Workaround: old PIX firewall code messes up when the final
+	".<CR><LF>" at the end of DATA spans a packet boundary.
+	When Postfix detects PIX SMTP fixup mode, Postfix flushes
+	the output buffers before sending the final ".<CR><LF>".
+	File:  smtp/smtp_proto.c.
+
+20010530
+
+	Portability: updated code for Mac OS X, accounting for the
+	post-Beta changes. Code by Joe Block, UCF School of
+	Optics/CREOL.
+
+20010601
+
+	Safety: postdrop turns off interrupts when cleaning up
+	after interrupt. The additional safety does not hurt anyone.
+	File: src/postdrop/postdrop.c.
+
+20010607
+
+	Safety: dropped the RFC 2821 compliant code that treats
+	552 RCPT TO replies as 452. It created more problems than
+	it solved. Files: smtp/smtp_proto.c, lmtp/lmtp_proto.c.
+
+	Logging: the SMTP server now logs a warning if RBL lookups
+	have problems other than "not found". file: smtpd/smtpd_check.c.
+
+20010610
+
+	Feature: address quoting and case folding flags for the
+	pipe(8) mailer.
+
+20010611
+
+	Workaround: some MTAs fall on their face when they receive
+	unexpectedly long lines. From now on, Postfix defaults to
+	breaking long lines at 2048 (like Sendmail so it has got
+	to be right). To get the old, content preserving, behavior
+	specify "smtp_truncate_lines = no". File: smtp/smtp_proto.c.
+
+20010614
+
+	Bugfix: did not really undo 2821 552->452 mapping.
+
+20010628
+
+	Bugfix: postfix-script used a hard-coded maildrop group
+	owner instead of using the install-time specified name
+	stored in /etc/postfix/install.cf. Problem reported by
+	David Terrell @ meat.net.
+
+20010701
+
+	Feature: mail_spool_directory ending in / causes maildir
+	style delivery.
+
+	Bugfix: the FreeBSD kernel parameters kern.ipc.nmbclusters
+	and kern.ipc.maxsockets cannot be set with sysctl commands.
+	File: html/faq.html. Len Conrad @ Go2France.com.
+
+	Cleanup: the virtual delivery agent was poorly integrated
+	so that the SMTP server and queue manager did not reject
+	mail for unknown users. Files: smtpd/smtpd_check.c.
+
+20010705
+
+	Feature: QMQP server, compatible with qmail and the ezmlm
+	list manager.  Files:  util/netstring.[hc], qmqpd/qmqpd*.c.
+
+20010706
+
+	Feature: QMQP stress test message generator program.  Files:
+	smtpstone/qmqp-source.c, smtpstone/qmqp-sink.c.
+
+20010708
+
+	Bugfix: with disable_dns=yes, the SMTP client treated all
+	host lookup errors as permanent. File: smtp/smtp_addr.c.
+
+20010709
+
+	Feature: VERP support, based on a patch by Peng Yong, and
+	with the missing parts filled in so that the Postfix bounce
+	daemon can send one VERP bounce per undeliverable recipient.
+	Files: , sendmail/sendmail.c, smtpd/smtpd.c, qmgr/qmgr_deliver.c,
+	bounce/bounce_notify_verp.c, qmqpd/qmqpd.c, plus a couple
+	support routines in the global library.
+
+	Cleanup: with recipient_delimiter=+ (or any character other
+	than -) Postfix will now recognize address extensions even
+	with owner-foo+extension addresses. This is necessary to
+	make VERP work for mailing lists.
+
+20010710
+
+	Bugfix: potential memory leak in the queue managers with
+	the new VERP delimiter record. Fix by Patrik Rak.
+
+20010711
+
+	Cleanup: you can now specify the VERP delimiter characters
+	on the sendmail(1) command line, but they are still optional.
+
+	Safety: with maildir style delivery and with hashed mailboxes
+	the system mail spool directory must not be world writable.
+
+20010713
+
+	Safety: the verp_delimiter_filter parameter (default: -=+)
+	limits what characters Postfix accepts as VERP delimiter
+	characters.
+
+20010714
+
+	Logging: the queue manager now logs a "status=expired"
+	record when it returns a message that is too old.  Files:
+	*qmgr/qmgr_active.c.
+
+20010719
+
+	Feature: stiffer coupling between mail receiving rates and
+	mail delivery rates, using a trivial token-based scheme,
+	implemented by reading and writing an in-memory pipe.  The
+	queue manager produces one token when it retrieves mail
+	from the incoming queue. The cleanup daemon consumes one
+	token when it adds mail to the incoming queue. If no token
+	is available the cleanup server pauses for $in_flow_delay
+	seconds and proceeds anyway. The delay allows mail sending
+	process to catch up and access the disk while not blocking
+	inbound mail. Valid delays are 0..10 seconds.
+
+20010727
+
+	Bugfix: updated LDAP client module from LaMont Jones, HP.
+	This also introduces new LDAP query filter patterns: %u
+	(address localpart) and %d (domain part). Files:
+	conf/sample-ldap.cf, util/dict_ldap.c.
+
+20010729
+
+	Bugfix: recursive smtpd_whatever_restrictions clobbered
+	intermediate results when switching between sender and
+	recipient address restrictions. Problem found by Victor
+	Duchovni, morganstanley.com. In order to fix, introduced
+	address resolver result caching, which should also help to
+	speed up sender/recipient address restriction processing.
+
+	Bugfix: the not yet announced DUNNO access table lookup
+	result did not prevent lookups with substrings of the same
+	lookup key. Found by Victor Duchovni, morganstanley.com.
+
+20010730
+
+	Robustness: trim trailing whitespace from regexp and pcre
+	right-hand sides, for consistency with DB/DBM tables.
+	Files: util/dict_pcre.c, util/dict_regexp.c.
+
+20010731
+
+	Robustness: eliminate duplicate IP addresses after expansion
+	of hostnames in $inet_interfaces, so that Postfix does not
+	suddenly refuse to start up after someone changes the DNS.
+	Files:  util/inet_addr_list.c global/own_inet_addr.c.
+
+	Feature: specify "disable_verp_bounces = yes" to have
+	Postfix send one RFC-standard, non-VERP, bounce report for
+	multi-recipient mail, even when VERP style delivery was
+	requested.
+
+20010801
+
+	Bugfix: postconf was using unexpanded values internally
+	for myhostname, inet_interfaces, and mynetworks_style.
+	This broke the "postconf -d" mynetworks computation.  File:
+	postconf/postconf.c.
+
+20010803
+
+	Feature: masquerade_classes parameter for fine control of
+	address masquerading. The default setting is backwards
+	compatible: envelope_sender header_sender header_recipient.
+	Files: cleanup/whatever.c.
+
+20010822
+
+	Code cleanup: the bounce daemon complained about data that
+	it was not going to send back anyway. Fix: stop reading
+	the original message when the bounce message reaches the
+	bounce message size limit. File: bounce/bounce_notify_util.c.
+
+20010826
+
+	Logging: postsuper now logs the queue ID when it requeues
+	a message, or when it deletes a message from the mail queue.
+	File: postsuper/postsuper.c.
+
+20010830
+
+	Safety: the SMTP server now sends a 4xx (try again later)
+	response when an UCE restriction is misconfigured, instead
+	of ignoring the bad restriction and possibly accepting mail
+	that it should not accept.   File: smtpd/smtpd_check.c.
+
+20010907
+
+	Workaround: the Postfix qmqp-source program produced mail
+	not ending in newline. qmail-qmqpd accepts such mail, but
+	qmail-remote is unable to deliver it.  Matthias Andree,
+	uni-dortmund.de. File: smtpstone/qmqp-source.c.
+
+20010910
+
+	Bugfix: the smtp-sink stress test program broke when RCPT
+	TO commands crossed network packet boundaries. Problem
+	reported by Matthias Andree, uni-dortmund.de.  File:
+	smtpstone/smtp-sink.c.
+
+20010917
+
+	Code cleanup: permit_mx_backup implements the old behavior
+	(accept mail if the local MTA is MX relay), and allows an
+	additional restriction via the permit_mx_backup_networks
+	parameter (accept mail only if the primary MX hosts match
+	the specified list of network blocks). This second restriction
+	is now entirely optional, for backwards compatibility.
+
+	Bugfix: an address extension could be appended multiple
+	times to the result of a canonical or virtual map lookup.
+	File: global/mail_addr_map.c.  Fix by Victor Duchovni,
+	Morgan Stanley.
+
+	Bugfix: split_addr() would split an address even when there
+	was no data before the recipient delimiter. In combination
+	with the above bug, this could cause an address to grow
+	exponentially in size.  Problem reported by Victor Duchovni,
+	Morgan Stanley.  File:  global/split_addr.c.
+
+20010918
+
+	Bugfix: the mail_addr_map() fix was almost but not quite
+	right. It took two clever people and several iterations of
+	email to really fix the mail_addr_map() problem.  Thanks
+	to Victor Duchovni and Liviu Daia.
+
+20011006
+
+	Cleanup: Postfix no longer flushes the whole deferred queue
+	after an ETRN request for a random domain name (i.e. a
+	domain name not matched by $fast_flush_domains); the SMTP
+	server instead replies with "459 service unavailable".
+	Files:  smtpd/smtpd.c, global/flush_clnt.c, flush/flush.c.
+
+20011008
+
+	Bugfix: there was a minute memory leak when an smtpd access
+	restriction was misconfigured. File: smtpd/smtpd_check.c.
+
+20011010
+
+	Code cleanup: Postfix daemons now print the name of the
+	UNIX-domain socket (instead of "unknown stream") in case
+	of a malformed client request. Files:  master/*server.c.
+
+20011010-14
+
+	Code cleanup: replaced the ugly mail_print() and mail-scan()
+	protocols by (name,value) attribute lists. This gives better
+	error detection when we make changes to internal protocols,
+	and allows new attributes to be introduced without breaking
+	everything immediately. Files: util/attr_print.c util/attr_scan.c
+	global/mail_command_server.c global/mail_command_client.c
+	as wel as most Postfix applications and daemons.
+
+20011015
+
+	Put base 64 encoding into place on the replaced internal
+	protocols.  Files: util/base64_code.[hc].
+
+	Feature: header/body REJECT rules can now provide text that
+	is sent to the originator. Files: cleanup/cleanup.c,
+	cleanup/cleanup_message.c, conf/sample-filter.cf.
+
+20011016
+
+	Bugfix: As of 20000625, Errors-To: was broken, because the
+	code to extract the address was not moved from recipient
+	address rewriting to sender address rewriting. Problem
+	reported by Roelof Osinga @ nisser.com. File:
+	cleanup/cleanup_message.c.
+
+20011029
+
+	Bugfix: virtual map expansion terminated early because the
+	detection of self-referential entries was flawed.  File:
+	cleanup/cleanup_map1n.c.
+
+20011031
+
+	Bugfix: mail_date() mis-formatted negative time zone offsets
+	with fractional hours (-03-30 instead of -0330). Fix by
+	Chad House, greyfirst.ca. File: global/mail_date.c.
+
+20011102
+
+	Feature: new -f option to postmap and postalias (do not
+	lowercase the lookup key while creating a table). Files:
+	util/dict.h postmap/postmap.c postalias/postalias.c.
+
+	Code cleanup: simplified the attribute print/scan routines,
+	and removed the never-used support for sending and receiving
+	integer arrays and string arrays. Files: util/attr_print.c,
+	util/attr_scan.c.
+
+	Bugfix: qmqpd could read past the end of a string while
+	looking for qmail's VERP magic token in the envelope sender
+	address.  File: qmqpd/qmqpd.c.
+
+	Code cleanup: finished testing the new internal protocols.
+	The only bug was with the flush server, which still needs
+	to support the old (string + null byte) protocol for triggers
+	from the Postfix master daemon.
+
+20011103
+
+	Bugfix: Postfix would log the wrong error text when locally
+	submitted mail was deferred due to "soft_bounce = yes".
+
+	Bugfix: The LDAP client dropped any entries that don't have
+	the result_attribute, but errored out when a DN didn't
+	exist.  The behavior is now consistent: treat non-existant
+	DN's in a special result attribute expansion the same as
+	DN's with no attribute.  LaMont Jones, HP.
+
+20011104
+
+	Bugfix: the new smtp-sink -n option (terminate after the
+	specified number of deliveries) wasn't optional.
+
+	Portability: updated Mac OS X documentation and install
+	scripts by Gerben Wierda.
+
+20011105
+
+	Bugfix: missing terminator in new attribute-based function
+	call caused signal 11. File: src/cleanup/cleanup.c.
+
+	Lame workaround for ESTALE errors with mail delivery over
+	NFS. Additional bandages were added to the local delivery
+	agent. However, Wietse maintains that Postfix offers no
+	guarantee for reliable delivery over NFS.
+
+	Feature: put "warn_if_reject" before an smtpd restriction,
+	and that restriction logs warnings without rejecting mail.
+	This makes it easier to test configurations "live" without
+	having to lose mail. File: smtpd/smtpd_check.c.
+
+20011107
+
+	Workaround: in order to get mail past PIX firewall bugs,
+	the Postfix SMTP client now blocks until the socket send
+	buffer is empty before sending the final ".<CR><LF>". Files:
+	util/sock_empty_wait.c, smtp/smtp_proto.c. Changed into
+	sleep(10) on 20011119. Sleep suggested by Hobbit.
+
+20011108
+
+	Feature: added string-null encoding for internal protocols.
+	Files: util/attr_print0.c, util/attr_scan0.c.
+
+	Feature: configurable parent domain matching for domain
+	and hostname/address match lists: either .domain or the
+	domain name itself. Files: util/match_ops.c util/match_list.c
+
+	Feature: added pretend-to-be-behind-PIX mode to the smtp-sink
+	test program, in order to stress test some PIX bug workaround
+	code.
+
+20011109
+
+	Workaround: Linux and Solaris systems have no reasonable
+	way to block until a socket drains. On these systems Postfix
+	simply waits for 10 seconds, in order to work around PIX
+	".<CR><LF>" bugs.  File: util/sock_empty_wait.c.
+
+20011114
+
+	Bugfix: reset the smtpd command transaction log between
+	deliveries. File: smtpd/smtpd.c.
+
+20011115
+
+	Feature: mailbox_command_maps no longer requires that every
+	user has an entry. If the user does not have a command
+	entry, the local delivery agent tries the other delivery
+	methods (mailbox_command, home_mailbox).  File: local/mailbox.c.
+
+	Bugfix: reset the smtpd command transaction log between
+	non-deliveries. File: smtpd/smtpd.c.
+
+20011116
+
+	Bugfix: consolidated all the command transaction log resets
+	and eliminated one missing reset (Victor Duchovni, Morgan
+	Stanley). File: smtpd/smtpd.c.
+
+20011118
+
+	Cleanup: replaced unnecessary match_list wrapper code by
+	macros. Files:  global/{string,domain,namadr}_list.[hc].
+
+20011119
+
+	Feature: configurable parent domain matching strategy for
+	transport map lookups. File:  trivial-rewrite/transport.c.
+
+	New parent_domain_matches_subdomains parameter. This lists
+	all the Postfix features where a domain name matches itself
+	and all its subdomains (instead of requiring ".domain.name"
+	for subdomain matches).  Planning for future backwards
+	compatibility :-)  File:  global/match_parent_style.c.
+
+	Workaround: simplified the PIX ".<CR><LF>" bug to always
+	sleep for 10 seconds.  File: smtp/smtp_proto.c.
+
+20011120
+
+	Workaround: disable attribute string length restriction so
+	that trivial-rewrite does not refuse to rewrite broken mail
+	headers.  Files:  util/attr_scan*.c.
+
+20011121
+
+	Bugfix: missing long integer support in the new IPC protocols.
+	Files: util/attr_scan*.c, util/attr_print*.c.
+
+	Portability: AIX5 (Adrian P. van Bloois), MAC OS X 10.1.1
+	(Gerben Wierda).
+
+20011125
+
+	Bugfix: spurious postmaster notifications because some flag
+	was not reset.
+
+	Feature: new parameter smtpd_sender_login_maps that specifies
+	the (SASL) login name that owns a MAIL FROM address.
+	Specify a regexp table in order to require a simple one-to-one
+	mapping. This is used in the reject_sender_login_mismatch
+	sender anti-spoofing feature.
+
+	Feature: restriction reject_sender_login_mismatch refuses
+	a MAIL FROM address when $smtpd_sender_login_maps specifies
+	an owner but the client is not (SASL) logged in as the MAIL
+	FROM address owner, or when a client is (SASL) logged in
+	but the client login name does not own the MAIL FROM address
+	according to $smtpd_sender_login_maps.  File: smtpd/smpd_check.c.
+
+	Documentation: added some redundancy to the LMTP_README
+	file so people can keep track of the difference between
+	the Postfix LMTP client and the non-Postfix LMTP server.
+
+20011126
+
+	Feature: smtpd_noop_commands specifies a list of commands
+	that are treated as NOOP (no operation) commands, without
+	syntax check or state change.  File: smtpd/smtpd.c.
+
+	Bugfix: the "mark queue file as corrupt" code did not work
+	because it was never used.  Files: global/mark_corrupt.c,
+	global/mail_copy.c, global/pipe_command.c, *qmgr/qmgr_active.c,
+	local/maildir.c, local/mailbox.c, local/command.c, pipe/pipe.c,
+	virtual/mailbox.c, virtual/maildir.c.
+
+	Bugfix: the bounce daemon broke in the unlikely case of a
+	non-existing queue file. File: bounce/bounce_notify_util.c.
+
+20011127
+
+	Feature: added WARN command to header/body_checks files as
+	proposed by Michael Tokarev. File: cleanup/cleanup_message.c.
+
+	Bugfix: the postdrop program was broken after the change
+	of Postfix internal protocols. This broke "sendmail -bs"
+	mail submissions with "secure" maildrop directory.  Reported
+	by Craig Loomis, apo.nmsu.edu. File: postdrop/postdrop.c.
+
+	Feature: a first start at fault injection for testing
+	unlikely error scenarios (such as corrupt queue files).
+	Parameter: fault_injection_code, must be left at zero for
+	production use.
+
+20011128
+
+	Robustness: add a file size limit to the sendmail and
+	postdrop submission programs to stop run-away process
+	accidents. This is not a defense against DOS attack.  Files:
+	sendmail/sendmail.c, postdrop/postdrop.c.
+
+	That resulted in a considerable amount of work to properly
+	propagate "file too large" conditions back to the sendmail
+	mail posting user interface. Took the opportunity to express
+	other mail submission fatal exits with the <sysexits.h>
+	exit status codes.  Files: sendmail/sendmail.c,
+	postdrop/postdrop.c.
+
+20011129
+
+	Maintenance: dict_ldap.c wasn't updated after the revision
+	of the string matching routines. File: util/dict_ldap.c.
+
+20011208
+
+	Maintenance: LDAP module and documentation from LaMont
+	Jones.  This version adds verbose logging for LDAP library
+	routines. Files: src/util/dict_ldap.[hc], LDAP_README,
+	conf/sample-ldap.cf
+
+	Portability: made memory alignment restrictions configurable.
+	File: util/mymalloc.c.
+
+	Bugfix? Avoid surprises with source routed destinations
+	and OK entries in SMTPD access maps. File: smtpd/smtpd_access.c.
+
+	Security: "postfix check" looks for damage by well-intended
+	but misguided use of "chown -R postfix /var/spool/postfix".
+	That would make chrooted Postfix less secure than non-chrooted
+	Postfix.  These extra tests may cause complaints with
+	third-party patches such as TLS that introduce their own
+	files into the jail.
+
+	Feature: static map type that always returns the map name
+	as lookup value, regardless of lookup key value. Contributed
+	Jeff Miller (jeffm at ghostgun.com)
+
+	Feature: turn off the PIX <CR><LF>.<CR><LF> workaround for
+	the first mail delivery attempt, i.e. when mail is queued
+	for less than $smtp_pix_workaround_threshold_time (default:
+	500) seconds. New parameter $smtp_pix_workaround_delay_time
+	to control the delay before sending .<CR><LF> (default: 10
+	seconds) when doing the PIX <CR><LF>.<CR><LF> workaround.
+
+20011210
+
+	Bugfix: the 20011128 change in sendmail and postdrop did
+	not handle the case of message_size_limit=0. Fix by Will
+	Day, Georgia Tech.
+
+20011212
+
+	Compatibility: The SMTP server now accepts <CR><CR><LF> as
+	if the client sent <CR><LF>. Reportedly, some badly written
+	windows software produces such garbage, and some badly
+	written windows anti-VIRUS software cannot handle such
+	garbage. File:  global/smtp_stream.c.
+
+20011214
+
+	Bugfix: postmap/postalias queries ignored the -f flag.
+	Reported by Hamish Marson.
+
+20011217
+
+	Compatibility: Sendmail now has a -L option to set the
+	syslogging label. Postfix sendmail uses syslog_name instead,
+	and ignores the -L option.
+
+	Security: subtle hardening of the Postfix chroot jail,
+	Postfix queue file permissions and access methods, in case
+	someone compromises the postfix account.  Michael Tokarev,
+	who received the insights from Solar Designer, who tested
+	Postfix with a kernel module that is paranoid about open()
+	calls.  Files:  master/master_wakeup.c, util/fifo_trigger.c,
+	postfix-script.
+
+	Convenience: issue a warning instead of aborting when the
+	local machine name is not in fully-qualified domain form.
+	This would otherwise break initial postfix installation
+	which needs the postconf command. File: global/mail_params.c.
+
+20011220
+
+	Added more garbage detection to postconf -e input processing.
+
+20011221
+
+	Feature: SMTPD access map lookups of null sender addresses.
+	If your access maps cannot store or look up null string
+	key values, specify "smtpd_null_access_lookup_key = <>"
+	and the null sender address will be looked up as <> instead.
+	File:  smtpd/smtpd_access.c.
+
+20011223
+
+	Safety: configuration file comments no longer span multiple
+	lines when the next line begins with whitespace; multi-line
+	input is no longer terminated by a comment line, by an all
+	white space line, or by an empty line. Michael Tokarev made
+	the crucial suggestion to simplify the readline routine.
+	Files:  util/readlline.c, postconf/postconf.c.
+
+	Cleanup: proper detection of big number overflow in EHLO
+	and MAIL FROM size announcements, with input from Victor
+	Duchovni, Morgan Stanley. Files: global/off_cvt.c,
+	smtpd/smtpd.c, smtp/smtp_proto.c, util/alldig.c.
+
+	Forward compatibility: added queue file record types for
+	original recipient and for generic named attributes.
+
+	Cleanup: safe_open() now returns sensible errno values so
+	that the fifo_trigger() external interface is restored.
+
+20011225
+
+	Upgrade: PCRE_README now describes PCRE version 3.x.
+
+	Cleanup: flush SMTPD command history upon receipt of EHLO,
+	RSET, and upon DATA completion, only if it exceeds
+	$smtpd_history_flush_threshold lines (default: 100).
+	Distant derivative of code by Michael Tokarev.  File:
+	smtpd/smtpd.c.
+
+20011228
+
+	Bugfix: a readlline() error message showed less text than
+	intended. Christian von Roques.
+
+	Cleanup: postfix now installs with group-writable maildrop
+	directory and with a set-gid postdrop mail submission
+	command.  The pickup service is now unprivileged.  The
+	world-writable maildrop directory no longer exists.
+
+	The cleanup service is now public, in preparation for local
+	sendmail/postdrop mail submission that avoids the maildrop
+	queue directory while Postfix is up.
+
+	Cleanup: moved the main.cf/master.cf file editing from the
+	postfix-script file to the INSTALL.sh file.
+
+	Cleanup: INSTALL.sh no longer accepts "no" as the destination
+	of Postfix manual pages.
+
+20011230
+
+	Cleanup: the code for "mailq", "sendmail -q", and for
+	"sendmail -qRsite" was moved from the sendmail command to
+	a new set-gid postqueue command. The pickup and qmgr FIFOs
+	are no longer world writable. Files: sendmail/sendmail.c,
+	postqueue/postqueue.c.
+
+20020101
+
+	Security: new alternate_config_directories parameter that
+	specifies what directories a set-gid command will accept
+	as its configuration directory. The list must be specified
+	in the default main.cf file. File: global/mail_conf.c.
+
+	Cleanup: "sendmail -qRsite" is no longer implemented by
+	connecting to the SMTP port. It is now implemented by
+	talking to the fast flush service. File: postqueue/postqueue.c.
+
+20020203
+
+	Cleanup: INSTALL.sh now records all installation information
+	in the main.cf file. The now obsolete install.cf file is
+	used only when upgrading from an older Postfix release.
+
+	Cleanup: INSTALL.sh now takes name=value settings on the
+	command line, and has a new "-upgrade" command line option
+	to turn on non-interactive installation.
+
+	Security: additional run-time checks to discourage sharing
+	of Postfix user/group ID values with other accounts.
+
+20020105
+
+	Cleanup: SMTPD access maps now return DUNNO (undetermined)
+	instead of OK when a recipient address contains multiple
+	domains (user@dom1@dom2, etcetera).  Victor Duchovni, Morgan
+	Stanley.  File:  smtpd/smtpd_check.c.
+
+20020106
+
+	Bugfix: SMTPD access maps did not handle address extensions.
+	File: smtpd/smtpd_check.c.
+
+20020107
+
+	Bugfix: postfix-script, when creating a missing maildrop
+	queue directory, still referenced install.cf when setting
+	maildrop directory group ownership; and the postfix command
+	did not export the setgid_group parameter to the postfix-script
+	shell script.  Victor Duchovni.
+
+	Bugfix: postfix-script, when creating a missing public
+	queue directory, did not set group ownership of the public
+	directory.
+
+20020109
+
+	Cleanup: rewrote the Postfix installation procedure again.
+	It is now separated into 1) a primary installation script
+	(postfix-install) that installs files locally or that builds
+	a package for distribution and that stores file owner and
+	permission information in /etc/postfix/post-files, and 2)
+	a post-installation script (/etc/postfix/post-install) that
+	creates missing directories, that sets file/directory
+	ownership and permissions, and that upgrades existing
+	configuration files if necessary.
+
+20020110
+
+	Workaround: AIX null read() return on an empty but open
+	non-blocking pipe. File:  master/master_flow.c.  Report:
+	Hamish Marson.
+
+20020111
+
+	Feedback: feedback, bugfixes, and brain-dead shell workarounds
+	for the install scripts by Victor Duchovni and Simon Mudd.
+
+20020113
+
+	Rewrote postfix-install. The postfix-files file now controls
+	what is installed.  Refined the semantics of many post-install
+	operations. post-install now auto-saves settings that
+	override main.cf.
+
+20020114
+
+	Bugfix: alternate_config_directories did not take comma or
+	whitespace as separators. File: global/mail_conf.c.  Victor
+	Duchovni, Morgan Stanley.
+
+	Bugfix: the rewritten postfix-install script did not chattr
+	+S the Postfix queue.
+
+20020115
+
+	Cleanup: added sample_directory and readme_directory
+	installation parameters for sample configuration files and
+	for README files. Files: postconf.c, postfix-install,
+	conf/postfix-files, conf/post-install.
+
+	Robustness: the postfix command now exports all installation
+	parameter settings, and input filters the environment, so
+	that the startup shell scripts produce a consistent result.
+	Files: postconf.c.
+
+20020117
+
+	Portability: patch from LaMont Jones for compiling dict_ldap.c
+	with the Netscape SDK.
+
+	Feature: added "r" (recursive chown/chgrp) flag to the
+	postfix-files database, for more convenient change of
+	Postfix queue ownership. Files: conf/postfix-files,
+	conf/post-install.
+
+20020122
+
+	Documentation: lots of little fixes.
+
+	Documentation: updates for the VIRTUAL_README file by Victor
+	Duchovni, Morgan Stanley.
+
+	Bugfix: postqueue -s dereferenced a null pointer when given
+	a numerical domain argument. LaMont Jones, HP.
+
+	Cleanup: smtpd now logs a warning when permit_sasl_authenticated
+	is used while SASL authentication is disabled, instead of
+	simply ignoring the restriction. LaMont Jones, HP. File:
+	smtpd/smtpd.c.
+
+	Safety: when postmap creates a non-existent file, the new
+	file inherits group/other read permissions from the source
+	file.  Based on code by LaMont Jones, HP.  File:
+	postmap/postmap.c.
+
+20020123
+
+	Portability: some Linux systems install libnsl.so without
+	libnsl.a file, causing an yp_match undefined reference
+	problem.  File: makedefs.
+
+20020124
+
+	Portability: post-install now requests that command_directory
+	is given on the command line when the postconf command is
+	in an unusual place.
+
+	Safety: extra code to detect and report Berkeley DB version
+	mismatches between compile time and run time.  This test
+	is limited to mismatches in the major version number only.
+	File:  util/dict_db.c. Based on code by Lawrence Greenfield,
+	Carnegie-Mellon university.
+
+	Safety: the postfix command and the master daemon abort if
+	they are running set-uid.
+
+	Documentation: the postmap manual page described an out of
+	date input file format.
+
+20020129
+
+	Workaround: SCO version 3.2 can't ioctl(FIONREAD) a pipe.
+	Therefore, input mail flow control is disabled by default.
+	Files:  makedefs, global/mail_params.h, conf/main.cf.
+	Problem reported by Kurt Andersen, Agilent.
+
+20020201
+
+	Workaround: changed the default smtpd_null_access_lookup_key
+	setting to <>, because some Bezerkeloid DB implementations
+	can't handle null-length lookup keys.  File: global/mail_params.h.
+
+	Bugfix: backed out a null-length address panic call by
+	ignoring the problem, like Postfix did in the past.  File:
+	global/resolve_local.c.
+
+	Safety: "postfix check" will now warn if /usr/lib/sendmail
+	and /usr/sbin/sendmail differ, and will propose to replace
+	one by a symlink to the other. File: conf/postfix-script.
+
+20020204
+
+	Sanity: additional permission checks for "postfix check"
+	that warn for setgid_group group ownership mismatches.  by
+	Matthias Andree, uni-dortmund.de. File: conf/postfix-script.
+
+	Bugfix: "postfix check" used a too simplistic way to
+	recognize file ownership (grepping ls output). It now uses
+	the recently discovered "find -prune".  Peter Bieringer,
+	Matthias Andree. File: conf/postfix-script.
+
+20020218
+
+	Workaround: log a warning and disconnect when an SMTP client
+	ignores our negative replies and starts sending message
+	content without permission. File: smtpd/smtpd.c.
+
+20020220
+
+	Bugfix: mismatch in the file being locked by dict_dbm and
+	the file being locked by postmap, so that locks did not
+	work correctly.  Victor Duchovni, Morgan Stanley.
+
+20020222
+
+	Workaround: Solaris bug 4380626: strcasecmp() and strncasecmp()
+	produce incorrect results with 8-bit characters. For example,
+	non-ASCII characters could compare equal to ASCII characters,
+	and that could result in any number of security problems.
+	Files:  util/strcasecmp.c, COPYRIGHT (the BSD license).
+
+	Bugfix: off-by-one error, causing a null byte to be written
+	outside dynamically allocated memory in the queue manager
+	with addresses of exactly 100 bytes long, resulting in
+	SIGSEGV on systems with an "exact fit" malloc routine.
+	Experienced by Ralf Hildebrandt; diagnosed by Victor
+	Duchovni. Files:  *qmgr/qmgr_message.c.  This is not a
+	security problem.
+
+	Bugfix: make all recipient comparisons transitive, because
+	Solaris qsort() causes SIGSEGV errors otherwise. Victor
+	Duchovni, Morgan Stanley. File: *qmgr/qmgr_message.c.
+
+20020302
+
+	Bugfix: don't strip source route (@domain...:) when the
+	result would be an empty address. This avoids problems when
+	append_at_myorigin is set to "no" (which is not supported).
+	Problem reported by Charles McColgan, Big Fish Communications.
+	File:  trivial-rewrite/rewrite.c.
+
+20020304
+
+	Cleanup: postqueue should not not complain when output
+	fails with "broken pipe".
+
+20020308
+
+	Bugfix? reply with 550 not 552 when content is rejected.
+	552 is reserved for "too much mail".
+
+	Documentation: add note to sendmail manual page that running
+	"sendmail -bs" as $mail_owner enables SMTP server UCE and
+	access control checks. This is meant for use from inetd
+	etc.  Matthias Andree.
+
+20020311
+
+	Bugfix: DBM maps should use different files for locking
+	and for change detection.  Problem reported by Victor
+	Duchovni, Morgan Stanley.  Files: util/dict.h util/dict.c
+	util/dict_db.c util/dict_dbm.c global/mkmap.c local/alias.c.
+
+20020313
+
+	Bugfix: mailq could show addresses with unusual characters
+	twice.  Problem reported by Victor Duchovni, Morgan Stanley.
+	File: showq/showq.c.
+
+	Bugfix: null recipients weren't properly recorded in
+	bounce/defer logfiles. Such recipient addresses are not
+	accepted in SMTP mail, but they could appear within locally
+	submitted mail.  File: bounce/bounce_append_service.c.
+
+20020318
+
+	Workaround: Berkeley DB can't handle null key lookups,
+	which happen with HELO names ending in ".".  Victor Duchovni,
+	Morgan Stanley. File: smtpd/smtpd_check.c.
+
+	Logging: log a hint when mail is deferred because the
+	soft_bounce parameter is set. People sometimes forget to
+	turn it off. File: global/bounce.c.
+
+20020319
+
+	Cleanup: add a msg_warn() call when fork() fails in
+	pipe_command(), to make problems easier to investigate.
+	Chris Wedgwood. File:  global/pipe_command.c.
+
+20020320
+
+	Feature: smtp_helo_name parameter to specify the hostname
+	or [ip.address] in HELO or EHLO commands. Files: smtp/smtp.c
+	smtp/smtp_proto.c.
+
+20020324
+
+	Cleanup: more graceful handling of long physical message
+	header lines upon input. Physical header lines can now
+	extend up to $header_size_limit characters. When a logical
+	message header is too long, the excess text is discarded
+	and Postfix no longer switches to body mode, to avoid
+	breaking MIME encapsulation.  Based on code by Victor
+	Duchovni, Morgan Stanley.  Files:  cleanup/cleanup_out.c,
+	cleanup/cleanup_message.c.
+
+	Cleanup: more graceful handling of long physical message
+	header or body lines upon output by the SMTP client. The
+	SMTP client output line length is controlled by a new
+	parameter smtp_line_length_limit (default: 990; specify 0
+	to disable the limit). Long lines are folded by inserting
+	<CR> <LF> <SPACE>, to avoid breaking MIME encapsulation.
+	Based on code by Victor Duchovni, Morgan Stanley.  File:
+	smtp/smtp_proto.c.
+
+20020325
+
+	Cleanup: allow additional text after a WARN command in a
+	header/body_checks pattern file, so that one can change
+	REJECT+text into WARN+text and vice versa. Based on code
+	by Fredrik Thulin, Stockholm University.
+
+	Cleanup: log a warning when an unknown command is found in
+	a header/body_checks pattern file, or when additional text
+	is found after a command that does not expect additional
+	text. Based on code by Fredrik Thulin, Stockholm University.
+
+	Bugfix: sendmail should not recognize "." as the end of
+	input when the current read operation started in the middle
+	of a line.  Victor Duchovni, Morgan Stanley. File:
+	sendmail/sendmail.c.
+
+20020328
+
+	Portability fix for OPENSTEP and NEXTSTEP by Gerben Wierda.
+	File: util/sys_defs.h.
+
+20020329
+
+	Bugfix: defer_transports broke because the flush server
+	triggered mail delivery (as if ETRN was sent) while doing
+	some internal housekeeping of per-destination logfiles.
+	Problem experienced by LaMont Jones, HP. File: flush/flush.c.
+
+	Bugfix: virtual mapping broke for addresses with embedded
+	whitespace. Fix by Victor Duchovni, Morgan Stanley. File:
+	cleanup/cleanup_map1n.c.
+
+	Feature: configurable service name for the internal services:
+	bounce, cleanup, defer, error, flush, pickup, queue, rewrite,
+	showq. This allows you to specify, for example, a non-default
+	cleanup service (smtpd -o cleanup_service_name=alt_cleanup).
+	Files: global/mail_params.[hc].
+
+	Feature: SASL version 2 support by Jason Hoos. Files:
+	*/*_sasl_glue.c, SASL_README, conf/sample-auth.cf.
+
+20020330
+
+	Bugfix: postqueue did not pass on non-default configuration
+	directory settings when running showq while the mail system
+	is down.  The super-user is now exempted from environment
+	stripping in postqueue/postqueue.c. Problem reported by
+	Victor Duchovni, Morgan Stanley.
+
+20020402
+
+	Workaround: recognize more headers that are sent instead
+	of SMTP commands. File: smtpd/smtpd.c.
+
+20020413
+
+	Feature: new pipe delivery agent "D" flag to prepend a
+	Delivered-To:  message header. This requires single recipient
+	deliveries. Based on code by Matthias Andree. File:
+	pipe/pipe.c.
+
+20020414
+
+	Portability: Postfix will no longer attempt to build with
+	gdbm support, because gdbm is broken. File:  makedefs.
+
+20020415
+
+	Cleanup: the attribute list IPC code did not distinguish
+	between "disconnect" and "timeout" while reading an attribute
+	list, making trouble shooting more difficult than necessary.
+	Files:  util/attr_scan0.c, util/attr_scan64.c.
+
+	Cleanup: install parameter defaults can now be overruled
+	from makedefs: sendmail_path, mailq_path, newaliases_path,
+	command_directory, daemon_directory. Based on code by Victor
+	Duchovni, Morgan Stanley. File: util/sys_defs.h.
+
+20020411
+
+	Cleanup: Use more robust quoting passing makedefs/Makefile
+	settings. This also simplifies the seven backslashes example
+	in the INSTALL file.  Victor Duchovni, Morgan Stanley.
+	Files: makedefs, INSTALL.
+
+20020417
+
+	Bugfix: the post-install script failed to upgrade master.cf
+	settings from private to public if the service was explicitly
+	configured as private.
+
+20020418
+
+	Documentation: added CPU saving patterns for quickly skipping
+	base 64 encoded text in message bodies.  Liviu Daia.  Files:
+	{proto,conf}/pcre_table, {proto,conf}/regexp_table,
+	conf/sample_{regexp,pcre}_body.cf.
+
+20020426
+
+	Bugfix: the SMTP client forgot to quote whitespace etc.
+	in a sender/recipient address when DNS lookup was turned
+	off (disable_dns_lookups = yes). Problem experienced by
+	Chip Paswater. Files: smtp/smtp_proto.c.
+
+20020501
+
+	Feature: wildcard lookup in transport maps (lookup key
+	"*").  Code developed with Lamont Jones, HP.
+
+	Feature: a null transport:destination transport map entry
+	means proceed as if the transport map lookup failed.  Code
+	developed with Lamont Jones, HP.
+
+	Feature: more efficient use of cache memory when a process
+	opens multiple Berkeley DB tables; and faster performance
+	creating large tables by using more buffer memory. Files:
+	util/dict_db.[hc], global/mkmap_db.c. Victor Duchovni,
+	Morgan Stanley.
+
+20020503
+
+	Cleanup: postqueue silently ignored command-line arguments
+	following -p or -f options, instead of complaining; postqueue
+	produced an incorrect error message (mail system down) when
+	the command was installed with incorrect privileges.  File:
+	postqueue/postqueue.c.
+
+	Bugfix: while reporting a domain name or IP address syntax
+	error, postqueue could dereference a dangling pointer with
+	some getopt() implementations. LaMont Jones, HP.  File:
+	postqueue/postqueue.c.
+
+	Safety: postalias and postmap now drop root privileges
+	while processing a non-root input file. Thus, the result
+	should be writable to the source file owner. Specify the
+	-o option if this is a problem. Files: postmap/postmap.c,
+	postalias/postalias.c.
+
+	Consistency: just like postmap, postalias now copies file
+	permissions from the source file when it creates a new
+	table for the first time. File: postalias/postalias.c.
+
+20020504
+
+	Portability: run-time test to avoid GDBM trouble.  File:
+	util/dict_dbm.c.
+
+20020505
+
+	Cleanup: revised and simplified the transport map semantics.
+	Null transport or nexhop fields now mean: "do not change":
+	use what would be used if the transport map did not exist.
+	This change eliminated a lot of code. The incompatibility
+	is that a null transport field no longer defaults to
+	$default_transport, but to $local_transport or $default_transport
+	depending on the destination, and that a transport map only
+	overrides relayhost when the table specifies explicit
+	nexthop information.  Files:  trivial-rewrite/transport.c,
+	trivial-rewrite/resolve.c.
+
+	Cleanup: revised the user interface for controlling the
+	Berkeley DB create and read buffer size controls. Files:
+	util/dict_db.[hc], global/mail_params.[hc], global/mkmap_db.c.
+
+20020507
+
+	Cleanup: simplified the hash/btree cache management code.
+	The caches are now per table instead of shared, and the
+	default read cache size is reduced to 128 kBytes. File:
+	util/dict_db.c.
+
+20020508
+
+	Bugfix: close user@domain@postfix-style.virtual.domain
+	source routing relaying loophole involving postfix-style
+	virtual domains with @virtual.domain catch-all patterns.
+	Problem reported by Victor Duchovni. File:  smtpd/smtpd_check.c.
+
+	Bugfix: mail_addr_map() used the "wrong" @ character in
+	addresses with multiple @. Victor Duchovni. File:
+	global/mail_addr_map.c.
+
+	Bugfix: for address localpart quoting, now quote @ as a
+	special character everywhere, except when resolving addresses.
+	Previously, the @ was nowhere quoted as a special character,
+	not even in SMTP commands.  Files:  global/quote_82[12]_local.c
+	and clients.
+
+20020509
+
+	Safety: don't allow an OK access rule lookup result for
+	user@domain@postfix-style.virtual.domain. Suggested by
+	Victor Duchovni, Morgan Stanley. File: smtpd/smtpd_check.c.
+
+	Bugfix: quote unquoted address localparts that need quoting.
+	Files: global/tok822_parse.c, global/quote_82[12]_local.c.
+
+	Documentation: simplified the advanced content filtering
+	example, and included a more advanced example for those
+	who want to squeeze out more performance without running
+	multiple Postfix instances.  Text by Victor Duchovni, Morgan
+	Stanley. File:  README_FILES/FILTER_README.
+
+20020510
+
+	Feature: header/body filters now log the origin of the
+	message that is being rejected. Files: smtpd/smtpd.c,
+	qmqpd/qmqpd.c, pickup/pickup.c, cleanup/cleanup_envelope.c,
+	cleanup/cleanup_message.c.  Requested by Craig Sanders, if
+	I remember correctly.
+
+	Feature: the Postfix SMTP client now passes on MIME body
+	type information (8bit, 7bit) received via SMTP, via MIME
+	headers, or via the sendmail command line. Files:
+	global/deliver_request.c, smtpd/smtpd.c, sendmail/sendmail.c,
+	cleanup/cleanup_envelope.c, cleanup/cleanup_message.c,
+	cleanup/cleanup_extracted.c, *qmgr/qmgr_message.c,
+	*qmgr/qmgr_deliver.c, smtp/smtp_proto.c, lmtp/lmtp_proto.c.
+
+20020511
+
+	Feature: bounces now specify the proper MIME encoding (8bit,
+	7bit), depending on the MIME body type information received
+	via SMTP, via MIME headers, or via the sendmail command
+	line. Files: global/bounce.c, global/defer.c, global/abounce.c,
+	bounce/bounce_service.c, bounce/bounce_notify_util.c.
+
+20020512
+
+	Cleanup: the SMTP client logged and bounced the CNAME
+	expanded recipient address, and thereby complicated trouble
+	shooting.  File:  smtp/smtp_proto.c.
+
+	Bugfix: the SMTP and LMTP clients bounced the quoted
+	recipient address, resulting in too much quoting in bounce
+	reports.  Files:  smtp/smtp_proto.c, lmtp/lmtp_proto.c.
+
+20020513
+
+	Bugfix: the LDAP client used the "wrong" @ character in
+	addresses with multiple @. LaMont Jones, HP. File:
+	util/dict_ldap.c.
+
+	Feature: lots of new LDAP stuff: result_filter (filter to
+	expand results from queries), chase_referrals, LaMont Jones,
+	HP. The LDAP bind timeout now works thanks to Victor
+	Duchovni, Morgan Stanley. File:  util/dict_ldap.c.
+
+	Cleanup: specify "resolve_dequoted_address = no" to prevent
+	Postfix from looking inside quotes for extra @ etc. characters
+	when resolving an address. This behavior is technically
+	more correct, but it opens a mail relay loophole with "user
+	@domain"@domain when relaying mail to a Sendmail system.
+
+20020514
+
+	Bugfix: the new code for header address quoting sometimes
+	did not null terminate strings so that arbitrary garbage
+	could appear at the end of message headers.  Reported by
+	Ralf Hildebrandt.  File:  global/tok822_parse.c.
+
+	Safety: user@domain@domain is no longer accepted by the
+	permit_mx_backup uce restriction (unless Postfix is configured
+	with "resolve_dequoted_address = no"). Victor Duchovni,
+	Morgan Stanley. File: smtpd/smtpd_check.c.
+
+20020515
+
+	Workaround: flush the SMTP client output buffer when no
+	output has happened for 10+ seconds. This prevents the
+	socket from timing out, in case DNS CNAME expansion is
+	slow.  Problem experienced by Alex Erdelyi, peregrine.com.
+	File:  smtp/smtp_chat.c. We did the same thing for the SMTP
+	server years ago, and one wonders why the coin didn't drop
+	at the time that the SMTP client could suffer from a similar
+	problem.
+
+20020516
+
+	Updated the FILTER_README file to turn off DNS lookups in
+	the SMTP client that feeds mail into a content filter.
+
+20020517
+
+	Cleanup: Mailbox-Line: message header labels should be
+	X-Mailbox-Line:  labels. Files: smtpd/smtpd.c, qmqpd/qmqpd.c.
+
+20020515-21
+
+	Feature: new MIME parser, written from scratch, that
+	recognizes the structure of MIME encapsulated mail. Influenced
+	by comments from Victor Duchovni. This code can detect but
+	will not decode obscure MIME formats or obscure character
+	string encoding that Liviu Daia expresses concern about.
+
+	MIME header scanning now happens in header_checks, and is
+	faster than body_checks could ever be. This also eliminates
+	the problem with multi-line MIME headers being matched one
+	line at a time.  Files:  global/mime_state.[hc],
+	cleanup/cleanup_message.c.
+
+20020521-22
+
+	Feature: 8-bit to quoted-printable conversion. First use
+	in the Postfix SMTP client. File: smtp/smtp_proto.c.
+
+	Logging: the Postfix SMTP and LMTP clients now report the
+	the protocol stage when they report a server reply.  File:
+	smtp/smtp_proto.c, lmtp/lmtp_proto.c.
+
+	Bugfix: the SMTP server warned about ignored client attributes
+	(these were introduced 20020510) in mail that was submitted
+	with "sendmail -bs".  File: smtpd/smtpd.c.
+
+20020525
+
+	Feature: separation of header checks into header_checks
+	(all primary headers except MIME related headers),
+	mime_header_checks (all MIME headers including MIME headers
+	at the start of messages) and nested_header_checks (headers
+	of attached messages, except MIME related headers).
+
+	Cleanup: broke out the header value parser from the MIME
+	processor so that the code can be reused elsewhere. File:
+	global/header_token.c.
+
+	Compatibility: Postfix now recognizes "name :" as a valid
+	message header, but normalizes it to "name:" form or else
+	lots of things would break all over the place.  Files:
+	global/is_header.c, global/mime_state.c.
+
+20020526
+
+	Bugfix: the SMTP server now disallows RCPT TO:<"">, just
+	like it disallows RCPT TO:<>.  File: smtpd/smtpd.c.
+
+	Feature: disable_mime_input_processing=yes/no controls
+	whether Postfix recognizes (and optionally enforces) MIME
+	formats while receiving mail. Default is NO.
+
+	Feature: disable_mime_output_conversion=yes/no controls
+	whether Postfix will convert 8BITMIME to 7BIT mail when
+	delivering mail to an SMTP server that does not announce
+	8BITMIME support.  Default is NO.
+
+	Feature: strict_8bitmime=yes/no controls whether Postfix
+	rejects 8-bit characters in headers and 7-bit body parts.
+	This blocks mail from poorly written software, including
+	majordomo approval requests that contain a valid 8BITMIME
+	email message, as well as mail that is piped into ancient
+	/bin/mail implementations that do not MIME format 8-bit
+	content. Default is NO.
+
+	Feature: strict_mime_encoding_domain=yes/no controls whether
+	Postfix rejects illegal content transfer encodings for
+	multipart/* and message/*. This blocks mail from poorly
+	written software. Default is NO.
+
+20020527
+
+	Feature: "FILTER transport:nexthop" in header/body checks.
+	After the message is queued, the message is sent through
+	a content filter. This requires different cleanup servers
+	before and after the filter, with header/body checks turned
+	off in the second cleanup server.
+
+20020528
+
+	Feature: strict_7bit_headers and strict_8bitmime_body are
+	now separately available. To to turn on both, use
+	strict_8bitmime.
+
+	Cleanup: abandon the use of isspace(3) in the parsing of
+	RFC822 message headers. Files: global/lex_822.h and lots
+	of little places.
+
+	Documentation: replace domain.name by domain.tld in the
+	example config files. The domain exists. They were getting
+	mail from poorly configured Postfix boxes.
+
+	Bugfix: The Postfix sendmail command did not export the
+	MAIL_CONFIG environment setting to the postdrop command.
+	File: global/mail_config.h.
+
+	Incompatibility: by default, turn on the PCRE_DOTALL flag,
+	so that PCRE patterns will match multi-line message headers
+	without causing pain. Suggested by Michael Tokarev. Also
+	documented all those darned undocumented PCRE flags in the
+	pcre_table(5) manual page. Files:  util/dict_pcre.c,
+	proto/pcre_table.
+
+20020529
+
+	Bugfix: mail rejected due to MIME errors was rejected
+	without proper logging. Files: global/mime_state.c,
+	cleanup/cleanup_message.c.
+
+20020531
+
+	Bugfix: the SMTP client code that prepends '.' to lines
+	starting with '.' had to be moved from its old place to
+	after the MIME output conversion. Problem found by Mark
+	Martinec.  File: smtp/smtp_proto.c.
+
+20020601
+
+	Bugfix: the deliver_pass() routine needed updating for the
+	extra MIME encoding attribute that was introduced 20020510.
+	Patch by Sebastian Schaffert @ wastl.net.  File:
+	global/deliver_pass.c.
+
+20020604
+
+	Workaround: Solaris non-blocking read() can fail on a socket
+	with unread data according to ioctl FIONREAD.  Incredible.
+	Diagnosis by Max Pashkov.  File:  smtp/smtp-sink.c.
+
+	Weird feature: sender-based routing. This will become more
+	useful once per-address transport map entries are done.
+	File:  src/*qmgr/qmgr_message.c.
+
+20020605
+
+	Safety: header_address_token_limit limits the amount of
+	memory and CPU that we're willing to spend while parsing
+	addresses in message headers. The limit is expressed as a
+	number of tokens. File: global/tok822_parse.c
+
+20020608
+
+	Feature: user@domain transport map lookup, based on code
+	by Scott Cotton, from several years ago. Adding this code
+	now was much less painful than it was in the past. Files:
+	global/strip_addr.c, trivial-rewrite/transport.c.
+
+20020610
+
+	Cleanup: making user@domain transport map lookups work with
+	sender-based routing was a bit tricky, because the null
+	address must be handled sensibly. Files: global/resolve_clnt.c,
+	trivial-rewrite/resolve.c. It ain't perfect yet, but close.
+
+20020613
+
+	Bugfix: postsuper -r was broken as of 20020510. The cleanup
+	daemon would discard mail with MIME type information. Moved
+	a bunch of sanity checks from the cleanup daemon to the
+	pickup daemon, so the checks are in one place.  Problem
+	experienced by Pavol Luptak. Files: pickup/pickup.c,
+	cleanup/cleanup_extracted.c.
+
+20020705
+
+	Safety: log a warning when a domain is listed in mydestination
+	and (virtual_maps or virtual_mailbox_maps).  This configuration
+	error causes the Postfix SMTP server to reject recipients
+	when the local_recipient_maps feature is enabled.  File:
+	smtpd/smtpd_check.c.
+
+200207011
+
+	Portability: in the master daemon, the default now is to
+	enable the signal handler code that writes a byte into a
+	pipe, instead of the signal handler code that sets a global
+	flag and hopes that select() will somehow wake up. File:
+	master/master_sig.c. This is needed for some IRIX and
+	UnixWare versions, but it should also produce a robust
+	result on all other supported systems.
+
+	Performance: the default SMTP connection establishment
+	timeout is now 30 seconds, instead of the system default
+	which can be atrociously large.
+
+20020712
+
+	When DNS lookup fails while delivering mail, report not
+	only the domain name but also the DNS record type.  This
+	should clue in people who ask why Postfix can't find a
+	domain while nslookup can.  File:  dns/dns_lookup.c.
+
+20020713
+
+	Bugfix: undo change made at 20020610 that causes the trivial
+	resolver client to loop when an address consists entirely
+	of @ and . characters.  File: trivial-rewrite/resolve.c.
+
+	Cleanup: Postfix no longer strips multiple '.' at the end
+	of a domain name. One '.' is silently tolerated. Files:
+	trivial-rewrite/rewrite.c, trivial-rewrite/resolve.c,
+	global/resolve_local.c. This policy is too distributed.
+
+20020715
+
+	Feature: @domain.tld catch-all map entries for the virtual
+	mail delivery agent. Files: global/virtual8_maps_find.c,
+	virtual/mailbox.c, smtpd/smtpd_check.c.
+
+	Feature: the virtual mail delivery agent now accepts address
+	extensions (user+foo@domain.tld), ignores them when looking
+	up users in its tables, but displays them in Delivered-To:
+	message headers.  File: global/virtual8_maps_find.c.
+
+20020716
+
+	Feature: domain names in a masquerade_domains list can now
+	be prefixed with !, in order to disable masquerading for
+	that domain name and for its subdomains. File:
+	cleanup/cleanup_masquerade.c.
+
+20020717
+
+	Bugfix: Mac OS X niscript (Netinfo) update by Gerben Wierda.
+	File: auxiliary/MacOSX/niscript.
+
+	Feature: The SMTP server reject_unknown_whatever restrictions
+	now also attempt to look up AAAA (IPV6 address) records.
+	Jun-ichiro itojun Hagino, IIJ labs. Files: smtpd/smtpd_check.c,
+	dns/dns_lookup.c.
+
+20020718
+
+	Bugfix: unnecessary lookups for extended addresses by the
+	virtual8_maps_find() routine. Victor Duchovni. His patch
+	did not work, nor did my own, but the present version should
+	be OK. File: global/virtual8_maps_find.c.
+
+20020719
+
+	Workaround: log a warning when an SMTP client name->address
+	lookup results in a numeric IP address, and set the client
+	hostname to "unknown". Some gethostbyname() implementations
+	will actually accept such garbage and thereby allow sites
+	to defeat the "reject_unknown_client" restriction. Problem
+	reported by Wolfgang Rupprecht, fix based on analysis (but
+	not code) by Victor Duchovni.
+
+	Bugfix: memory leaks in the LDAP client by Victor Duchovni.
+	File: util/dict_ldap.c.
+
+	Bugfix: garbage in verbose "flush" server logging. Victor
+	Duchovni.  File: flush/flush.c.
+
+20020723
+
+	Incompatibility: smtpd_sasl_local_domain now defaults to
+	the null string. File: smtpd/smtpd.c, smtpd/smtpd_sasl_glue.c.
+
+20020726
+
+	Documentation: added GDB debugging instructions for sites
+	that do not have X installed on the Postfix machine. Henrik
+	Larsson, spambox.dk.
+
+20020729
+
+	Weird: installed RedHat 3.03 inside VMware, and no change
+	was needed to build Postfix, except to recognize the Linux
+	version.
+
+	Bugfix: some mailers will announce ESMTP features in their
+	HELO (not EHLO) response. Postfix did not ignore them.
+	File: smtp/smtp_proto.c.
+
+20020731
+
+	Cleanup: permit_naked_ip_address is unsafe (especially when
+	used with smtpd_recipient_restrictions) and will go away.
+	Postfix now logs a warning. File: smtpd/smtpd_check.c.
+
+20020801
+
+	Cleanup: the warning message for matched header/body content
+	was misleading. File: cleanup/cleanup_message.c.
+
+	Safety: moved the "postsuper -r ALL" operation after the
+	"postsuper -s" check that makes queue file names match
+	inode numbers. This avoids loss of mail in the unlikely
+	case that someone runs "postsuper -sr ALL" on a queue that
+	was copied from another place.
+
+	Feature: "postsuper -h" to put mail "on hold" and "postsuper
+	-H" to release mail that was placed "on hold". This involves
+	a new queue, which is appropriately named "hold".  Files:
+	postsuper/postsuper.c, showq/showq.c.
+
+20020803
+
+	Feature: when a Delivered-To: mail delivery loop is detected,
+	send the bounce to the mailing list owner. This required
+	changes to the local delivery agent, a new bounce client
+	stub, and a new bounce server stub and support routines
+	for one recipient bouncing. Files: local/recipient.c,
+	global/bounce_log.c, global/bounce.c, bounce/bounce.c,
+	bounce/bounce_notify_util.c, bounce/bounce_one_service.c.
+
+20020809
+
+	Bugfix: the 20020531 bugfix could prepend '.' to lines when
+	it shouldn't (but only when converting 8-bit mail to 7-bit).
+	Problem experienced by Ralf Hildebrandt.  File:
+	smtp/smtp_proto.c.
+
+	Bugfix: smtpd_sender_login_maps did not do the @domain etc.
+	wild-card lookups that were promised. Problem experienced
+	by Sven Michels. File: smtpd/smtpd_check.c.
+
+20020810
+
+	Feature: new smtp-sink command-line options to specify the
+	SMTP hostname, to disable ESMTP protocol support, to disable
+	8BITMIME support, and to syslog selected commands.  File:
+	smtpstone/smtp-sink.c.
+
+20020814
+
+	Feature: the queue manager now warns when mail for some
+	destination is piling up in the active queue, and suggests
+	a variety of remedies.  The qmgr_clog_warn_time parameter
+	controls the time between warnings, mainly so that I could
+	test the code. To disable these warnings, specify
+	"qmgr_clog_warn_time = 0". Files:  *qmgr/qmgr_entry.c.
+
+20020815
+
+	Paranoia: truncate the DNS response length result value in
+	case it is larger than the result buffer length (the resolver
+	documentation is vague about this). File:  dns/dns_lookup.c.
+
+20020816
+
+	Cleanup: "postqueue -f" now also triggers delivery of mail
+	in the maildrop directory. This is needed when the master
+	does not frequently wake up the pickup service.  Files:
+	global/mail_flush.c, postqueue/postqueue.c.
+
+20020818
+
+	Cleanup: the qmgr_site_hog_factor feature is gone (defer
+	mail if a site uses up too much space in the active queue).
+	Instead, the qmgr_clog_warn_time feature provides better
+	solutions. File: qmgr/qmgr_message.c.
+
+20020819
+
+	Feature: new header/body_checks HOLD pattern that causes
+	mail to be placed on the "hold" queue for manual inspection.
+	Files: global/hold_message.[hc], cleanup/cleanup_message.c.
+
+20020820
+
+	Bugfix: yesterday's HOLD pattern code did not update the
+	cleanup server's idea of the queue file name for error
+	recovery and for error reporting purposes, so that incomplete
+	or content rejected mail would not be deleted from the
+	queue, and so that the bouncer would not find the queue
+	file.
+
+	Bugfix: the #ifdef that detects too old LDAP libraries was
+	in the wrong place.  Victor Duchovni.  File: util/dict_ldap.c.
+
+	Feature: new header/body_checks DISCARD pattern that causes
+	mail to be silently discarded. Files: global/cleanup_user.h,
+	cleanup/cleanup_message.c, cleanup/cleanup_api.c.
+
+	Bugfix: the local delivery agent's mailbox duplicate delivery
+	eliminator was not updated in the days that address extensions
+	were added to Postfix. The other local duplicate eliminators
+	probably need revision as well. File: local/mailbox.c.
+
+20020821
+
+	Feature: HOLD and DISCARD actions in SMTPD access tables.
+	These requests are propagated to the cleanup daemon.  Files:
+	cleanup/cleanup_envelope.c smtpd/smtpd_check.c.
+
+	Cleanup: eliminate unnecessary references to the obsolete
+	program_directory configuration parameter (but keep the
+	parameter so as to not break existing installations).
+	Matthias Andree, many little changes in documentation.
+
+20020822
+
+	Bit Rot: OpenLDAP incompatible change with URL parsing.
+	Patches by Will Day, Georgia Tech, and Carsten Hoeger,
+	SUSE.  File: util/dict_ldap.c.
+
+20020823
+
+	Bugfix: added a missing memset() call to wipe the lookup
+	key in dict_db_delete(). This is needed by some Berkeley
+	DB implementations. Patch by Katsu Yamamoto, Fujitsu.
+
+	Bugfix: when permit_mx_backup is unable to make a decision
+	due to DNS problems, set the "defer if reject" flag so that
+	other restrictions will not cause mail to be rejected.
+	File: smtpd/smtpd_check.c.
+
+	Feature: instead of giving up immediately after DNS failure,
+	turn on the "defer_if_permit" flag when reject_unknown_hostname,
+	reject_unknown_sender_domain or reject_unknown_recipient_domain
+	are unable to make a decision, and see if any subsequent
+	restrictions would still cause the mail to be rejected.
+	File:  smtpd/smtpd_check.c.
+
+	Feature: "FILTER transport:nexthop" is now also available
+	in SMTPD access tables.
+
+20020826
+
+	Workaround: HP-UX 11 accept() fails with ENOBUFS when the
+	client disconnects early. File: sane_accept.c.
+
+20020901
+
+	Cleanup: postfix-install no longer installs all the manual
+	pages under $POSTFIXSOURCE/man, so we can generate manual
+	pages for smtp-sink etc.  File: man/Makefile.in.
+
+20020903
+
+	Bugfix: the rmail script should have been updated when
+	Postfix sendmail was changed to recognize `.' as the end
+	of input.  Problem fix by Christian Kratzer, cksoft.de.
+	File:  auxiliary/rmail/rmail.
+
+	Feature: specify "maximal_queue_lifetime = 0" for mail that
+	should be returned immediately after the first unsuccessful
+	delivery attempt. Files: qmgr/qmgr.c, nqmgr/nqmgr.c.
+
+20020904
+
+	Bugfix: qmail compatibility: qmqpd should support any
+	character at the end of the VERP prefix in prefix@host-@[].
+	Based on a patch by LaMont Jones, HP.
+
+20020905
+
+	Feature: "smtpd_data_restrictions = reject_unauth_pipelining"
+	blocks mail from SMTP clients that send message content
+	before Postfix has replied to the DATA command.  File:
+	smtpd/smtpd.c, smtpd/smtpd_check.c.
+
+	Bugfix: the LDAP client dumped core in verbose mode.
+	Reported by Will Day and others.  File: util/dict_ldap.c.
+
+20020906
+
+	Cleanup: dict_regexp module speedups by avoiding unnecessary
+	substring overhead while matching strings. Based on a
+	suggestion by Liviu Daia. This involved major rewriting of
+	the regexp map code.  File: util/dict_regexp.c.
+
+20020907
+
+	Feature: IF..ENDIF support based on code by Bert Driehuis.
+	This involved a further rewrite of the regexp map code.
+	File: util/dict_regexp.c.
+
+200209010
+
+	Bugfix: the SMTP client produced suprious warnings about
+	trouble with fallback_relay hosts. File:  smtp/smtp_connect.c.
+
+	Robustness: don't wait with detecting broken SMTP connections
+	until reading input. Leandro Santi. File: smtpd/smtpd_chat.c.
+
+200209011
+
+	Workaround: IRIX 6 can't do ioctl FIONREAD on pipes. This
+	breaks the in_flow_delay feature.  File:  util/sys_defs.h.
+
+20020912
+
+	Bugfix: canonical/virtual mapping core dump with a null
+	right-hand side address. Report by Jussi Silvennoinen.
+	File: global/mail-addr_crunch.c.
+
+	Feature: IF..ENDIF support based on code by Bert Driehuis.
+	This involved a rewrite of the pcre map code similar to
+	the regexp map code.  File:  util/dict_pcre.c.
+
+20020917
+
+	Feature: on Linux, support for PCRE lookup tables is now
+	compiled in if the PCRE library code is found under
+	/usr/include and /usr/lib.  File: makedefs.
+
+20020918
+
+	Documentation: postsuper(1) did not document the -c option.
+
+	Bugfix: possible longjump() before setjmp(). File:
+	smtpd/smtpd.c.
+
+	Bugfix: pickup should not preserve INSPECT or FILTER records
+	from "postsuper -r". File: pickup/pickup.c.
+
+20020919
+
+	Feature: "reject_rbl <domain>" for client address blacklisting
+	by LaMont Jones, including $name expansion for per-domain
+	customized response messages. The obsolete reject_maps_rbl
+	is now a wrapper that uses the new code.
+
+20020921
+
+	Internal: added caching and factored out common code that
+	will be used for both reject_rbl and for the upcoming
+	reject_rhsbl restriction.
+
+20020922
+
+	Feature: "reject_rhsbl <domain>" for sender domain
+	blacklisting.  Provides the same per-domain customized
+	response message mechanisms with $name expansion as
+	reject_rbl.
+
+	Safety: the smtpd_expansion_filter parameter controls what
+	characters are allowed in the expansion of $name macros in
+	template RBL responses.
+
+	Cleanup. In order to make sensible warnings possible when
+	expanding a non-existent $name in RBL reply templates,
+	mac_expand() had to be changed so that an empty string
+	result (i.e. the name does exist) will no longer cause
+	${name?text} to succeed.  File:  util/mac_expand.c.
+
+20020923
+
+	Cleanup. Renamed the RBL features according to a scheme
+	that was suggested by Liviu Daia in October 2001. The names
+	are reject_rbl_client and reject_rhsbl_sender, respectively.
+	Added domain name based reject_rhsbl_client and
+	reject_rhsbl_recipient restrictions for completeness.  The
+	reject_rbl restriction name is still recognized for
+	compatibility with systems maintained by LaMont Jones.
+
+20020924
+
+	Bugfix: reject_rhsbl_<mumble> was broken when <mumble> was
+	unavailable, causing the restrictions parser to get out if
+	sync. Spotted by Ralf Hildebrandt.  File:  smtpd/smtpd_check.c.
+
+20020928
+
+	Bugfix: missing %s in the 20020923 RBL code. This was not
+	exploitable because Postfix implements only a safe subset
+	of all printf format operators and because memory for the
+	result is dynamically allocated.  Victor Duchovni. File:
+	smtpd/smtpd_check.c.
+
+20020929
+
+	Updated MacOSX support scripts from Gerben Wierda.  Files:
+	auxiliary/MacOSX/*.
+
+20021009
+
+	Bugfix: SIZE errors should be reported at MAIL FROM time,
+	and should not be postponed (with smtpd_delay_reject = yes)
+	until RCPT TO time. Reported by Jeroen Scheerder, Utrecht
+	University. Files: smtpd/smtpd.c smtpd/smtpd_check.c.
+
+20021013
+
+	When Postfix development started, Linux mail delivery
+	software such as procmail did not use kernel locks, and
+	Postfix picked one that seemed plausible, namely, flock().
+	In the mean time, Linux mail delivery software seems to
+	have standardized on fcntl() locks. File: util/sys_defs.h.
+
+	Feature: body_checks_size_limit parameter to specify how
+	much of a message body segment (or attachment, if you prefer
+	to use that term) is subjected to body_checks inspection.
+	Default limit:  50 kbytes. Files:  global/mime_state.c,
+	cleanup/cleanup_message.c.
+
+20021015
+
+	Bugfix: the code for missing postmaster/mailer-daemon
+	aliases had to be moved after the code that implements the
+	luser_relay feature. Files: local/alias.c, local/unknown.c.
+
+	Weird? The LMTP client lowercased the MAIL FROM and RCPT
+	TO addresses. Some remnant of code that someone put in
+	there long ago. File: lmtp/lmtp_proto.c.
+
+20021024
+
+	Feature: proxy_interfaces parameter. Specify your NAT or
+	other proxy addresses here to avoid mail delivery loops.
+	Files: global/mail_params.[hc] global/own_inet_addr.[hc]
+	global/resolve_local.c smtp/smtp_addr.c smtpd/smtpd_check.c.
+
+	Paranoia: defend against a very unlikely false alarm in
+	safe_open().
+
+20021025
+
+	Feature: X-Original-To: message headers with the raw original
+	envelope recipient.
+
+	Logging: status=sent/deferred/bounced/ logging now includes
+	the original recipient address if it differs from the final
+	address.
+
+20021026
+
+	Logging: SMTP UCE reject/warn/hold/discard logging now
+	includes queue ID. This will break some logfile analyzers.
+
+	Logging: SMTP UCE reject/warn/hold/discard logging now
+	includes the protocol name and, if available, the hostname
+	given in the SMTP HELO or EHLO command.
+
+	Logging: header/body_checks reject/warn/hold/discard logging
+	now includes the protocol name and, if available, the
+	hostname given in the SMTP HELO or EHLO command.
+
+20021028
+
+	Bugfix: don't reset state after rejected EHLO. Reset state
+	after HELO. Reported by Karthikeyan Bhargavan, upenn.edu.
+	Files: smtpd/smtpd.c.
+
+20021029
+
+	Bugfix: local(8) did not prepend an X-Original-To:  message
+	header while delivering to command, and local(8) did not
+	document the X-Original-To:  message header.
+
+	Workaround: DJBDNS produces a bogus A record when given a
+	numerical hostname. File: dns/dns_lookup.c.
+
+20021030
+
+	Portability: support for Berkeley DB version 4.0 but not
+	for Berkeley DB version 4.1 (yes, the API is different).
+	Postfix is now going to be paranoid about the minor version
+	number, too. File:  util/dict_db.c.
+
+	Documentation: updated LMTP_README file by Amos Gouaux.
+
+20021031
+
+	Bugfix: (bug introduced 20021026) log NOQUEUE when rejecting
+	ETRN, instead of trying to log a non-existent queue ID.
+	Victor Duchovni, Morgan Stanley. File: smtpd/smtpd_check.c.
+
+	Cleanup: allow optional text after commands in SMTPD access
+	maps. Based on initial effort by Victor Duchovni, Morgan
+	Stanley. File: smtpd/smtpd_check.c.
+
+	Portability: support for Berkeley DB version 4.1.  This
+	version refuses to open zero-length files. This complicates
+	lock management and requires extra code to remove broken
+	files. Files:  util/dict_db.c, global/mkmap*.[hc].
+
+20021101
+
+	Bugfix: don't complain about out-of-order original recipient
+	records for finished recipients. Files:  *qmgr/qmgr_message.c,
+	cleanup/cleanup_envelope.c, cleanup/cleanup_extracted.c.
+
+	Cleanup: further simplified the mkmap wrapper (used by
+	postmap and postalias only) to remove some hurdles for
+	Michael Tokarev's CDB support. Files: global/mkmap*.[hc].
+
+20021105
+
+	Postalias now produces YP_LAST_MODIFIED and YP_MASTER_NAME
+	records only when NIS support is compiled in. File:
+	postalias.c.
+
+20021106
+
+	Postalias now puts $myhostname in the YP_MASTER_NAME record,
+	instead of the possibly bogus gethostname() result.  File:
+	postalias.c.
+
+	The PCRE map code did not reject non-numeric replacement
+	indices in replacement text, and silently treated $text as
+	$0. Found by Michael Tokarev. File: dict_pcre.c.
+
+20021108
+
+	Cleanup: the behavior of the SMTP server's defer_if_permit
+	flag was changed, in order to maximize the opportunity to
+	permanently reject mail without opening opportunities for
+	losing legitimate mail. This was done in cooperation with
+	Victor Duchovni, Morgan Stanley. File: smtpd/smtpd_check.c.
+
+	The defer_if_permit flag is still set when an UCE reject
+	restriction fails due to a temporary (e.g., DNS) problem,
+	to prevent unwanted mail from slipping through. However,
+	the flag is no longer tested at the end of client, helo or
+	sender restrictions.  Instead, the flag is now tested at
+	the end of the ETRN and recipient restrictions only.
+
+	The behavior of the warn_if_reject restriction has changed.
+	It no longer activates any already made defer_if_permit or
+	defer_if_reject decisions (the defer_if_reject flag is set
+	when some UCE permit restriction fails due to a temporary
+	(DNS) problem, to avoid loss of legitimate mail).
+
+	Bugfix: instead of setting the defer_if_permit flag, a
+	failing reject restriction after warn_if_reject now merely
+	logs that it would have caused mail to be deferred.
+
+	A failing permit restriction after warn_if_reject still
+	raises the defer_if_reject flag, to avoid loss of legitimate
+	mail.
+
+20021109
+
+	Bugfix: a misguided change to the .forward macro expansion
+	filter broke .forward file lookup.
+
+	Bugfix: missing defer_if_permit test in smtpd_data_restrictions.
+	Victor Duchovni. File:  smtpd/smtpd_check.c.
+
+20021112
+
+	Robustness: increase the mime_nesting_limit from 20 to 100,
+	so that bounces can't loop. Each bounces increases the MIME
+	nesting level by one.  Ralf Hildebrandt and Victor Duchovni.
+
+20021113
+
+	Robustness: reinstated SMTP client command flushing to
+	avoid pipeline stalls.  File: smtp/smtp_chat.c.
+
+20021114
+
+	Robustness: distinguish between timeout and "lost connection"
+	when the SMTP server is unable to send a reply to the remote
+	client. File: smtpd/smtpd_chat.c.
+
+20021115
+
+	Bugfix: initialization error with "*" transport table
+	lookup, reported by LaMont Jones. The transport map lookup
+	code had grown into a monster and needed to be replaced.
+	trivial-rewrite/transport.c.
+
+20021115
+
+	Start implementing recipient verification. For now this is
+	done by adding trace flags to queue files. In case of a
+	verification request, a delivery agent does not deliver,
+	deliver, it just records what would happen.
+
+	This required instrumenting the bounce/defer/sent logging
+	routines to send their data to the right place depending
+	on the type of delivery request.
+
+20021116
+
+	New trace service. This is used for reporting if a recipient
+	is deliverable (sendmail -bv) and for producing a record
+	of delivery attempts (sendmail -v). The report is sent via
+	email, using the bounce daemon. Files: global/trace.[hc].
+
+	This required replacing the bounce/defer logfile format by
+	an extensible name=value format. Files: global/bounce_log.c,
+	bounce/bounce_append_service.c.
+
+20021117
+
+	New address verification service with simple expiration
+	and refresh policy. Storage can be in-core or in permanent
+	table. The daemon is appropriately called "verify". Files:
+	global/verify_clnt.[hc], verify/verify.c.
+
+20021118
+
+	Cleaning up the code for tracing and verification. Files:
+	global/{log_adhoc,bounce,defer,trace,verify}.[hc].
+
+20021119
+
+	New address_verification_negative_cache = yes/no parameter
+	controls whether Postfix stores the result of negatieve
+	address verification probes. This reduces cache pollution
+	but causes Postfix to send a probe for each address
+	verification service query. File: verify/verify.c.
+
+	Added optimistic caching to the verify daemon, so that one
+	failed probe will not clobber a known to be good address.
+	As long as some probes succeeed, a good address will stay
+	cached as OK.
+
+	Cleaning up of the bounce daemon's code for bounce, delayed
+	mail warning and trace notification.  Files: bounce/*.[hc],
+	global/bounce_log.c.
+
+20021120
+
+	Changed the probe's sender address to "postmaster" so that
+	we get better information about the address we're testing.
+	File: verify/verify.c.
+
+	Added some paranoia to the routine that reads data from
+	the address verification cache. Ignore data that is obviously
+	bogus. File: verify/verify.c.
+
+20021121
+
+	Bugfix: garbage in "user@garbage"@domain address forms may
+	cause the SMTP or LMTP client to terminate with a fatal
+	error exit because garbage/tcp is not an existing service.
+	This cannot be abused to cause the SMTP or LMTP client to
+	send data into unauthorized ports.  Files: *qmgr/qmgr_message.c,
+	trivial-rewrite/resolve.c.
+
+20021124
+
+	Bugfix: don't use same VSTRING buffer for reading and
+	writing.  File: verify/verify.c.
+
+20021128
+
+	Feature: hashed hold queue support, with hashing turned on
+	by default. Omission spotted by Victor Duchovni, Morgan
+	Stanley. Files: global/hold_message.c, global/mail_params.h.
+
+	Bugfix: the LMTP client lost the port(service) information
+	when parsing host:port information. Victor Duchovni, Morgan
+	Stanley. Fix is to have a new host_port(3) module that does
+	the parsing for the SMTP and LMTP clients.
+
+	Cleanup: host_port() routine that parses host/port information
+	more consistently than the existing code in the LMTP and
+	SMTP clients. Files: smtp/smtp_connect.c, lmtp/lmtp_connect.c,
+	util/host_port.[hc].
+
+20021130
+
+	Cleanup: defer mail when recipient verification takes too
+	long. File: smtpd/smtpd_proto.c.
+
+	Feature: new reject_multi_recipient_bounce restriction, to
+	reject "MAIL FROM: <>" with multiple recipients.  File:
+	smtpd/smtpd_check.c.
+
+20021201
+
+	Compatibility: ignore the new Sendmail -A option. File:
+	sendmail/sendmail.c.
+
+	Workaround: sendmail -v now produces no output. You need
+	to specify -v -v instead. This is to avoid problems when
+	people request verbose mail delivery in their mail.rc file.
+	File:  sendmail/sendmail.c.
+
+20021202
+
+	Cleanup: hash_queue_depth now defaults to 1 level of
+	subdirectories. This makes "mailq" faster on most systems,
+	but will result in poorer worst-case performance when lots
+	of mail is queued.
+
+	The check_relay_domains restriction is going away. The SMTP
+	server logs a warning and suggests using reject_unauth_destination
+	instead.
+
+	Cleanup: the local(8) and virtual(8) delivery agents did
+	not prepend X-Original-To: addresses to maildir files.
+	Omission spotted by Matthias Andree.
+
+	Specify "address_verify_sender=" or "address_verify_sender=<>"
+	to use a null sender address while doing address verification
+	probes.  Beware, doing so may trigger false negatives
+	because some sites reject mail from the null sender, even
+	though this is required by RFC standards.
+
+	Bugfix: too many levels of dereferencing while testing for
+	missing reject_rbl_mumble domain names. Patrik Rak.  File:
+	smtpd/smtpd_check.c.
+
+20021203
+
+	Bugfix: the FILTER access table action included the FILTER
+	command in the filter request, where only the transport+destination
+	were expected. Noel Jones. File smtpd/smtpd_check.c.
+
+	Cleanup: virtual_maps is now called virtual_alias_maps, in
+	order to better distinguish it from virtual_mailbox_maps.
+	The default value is $virtual_maps for backwards compatibility.
+
+	New parameters virtual_alias_domains and virtual_mailbox_domains
+	for the "domain.tld whatever" lookups.  These use the same
+	syntax as the mydestination parameter.  Default settings
+	are backwards compatible with Postfix 1.1.
+
+	Concept: just like $mydestination+$inet_interfaces control
+	what routes to $local_transport, $virtual_mailbox_domains
+	now controls what routes to $virtual_transport (default
+	transport:  virtual), and $relay_domains now controls what
+	routes to $relay_transport (default transport: relay, a
+	clone of the smtp transport).  Everything else routes to
+	$default_transport as before.  This eliminates the need
+	for transport map entries for every virtual(8) domain, and
+	avoids performance problems with inbound relay mail. This
+	was improvement was suggested by Victor Duchovni. File:
+	trivial-rewrite/resolve.c.
+
+20021206
+
+	Cleanup: do allow regexps in aliases, virtual mailbox maps
+	but do not allow regular expression substitutions. Files:
+	util/dict.h, util/dict_regexp.c, util/dict_pcre.c.
+
+20021207
+
+	Cleanup: deleted the description of sendmail-style virtual
+	domains from the virtual(5) manual page. This part of
+	Postfix was too confusing.
+
+	Performance: RFC 2821 blesses the use of CNAME domain names
+	in MAIL FROM and RCPT TO. Not having to expand CNAME domain
+	names speeds things up a bit.  File:  smtp/smtp_proto.c.
+
+	Workaround: exclude error mailer destinations from transport
+	mapping lookups :-(. File: trivial-rewrite/resolve.c.
+
+	Cleanup: relocated_maps lookups are now moved to the
+	trivial-rewrite server. As of now, the queue manager no
+	longer does any map lookups, so it won't restart when maps
+	change. Files:  *qmgr/qmgr_message.c, trivial-rewrite/resolve.c.
+
+	Robustness: because the trivial-rewrite server now does
+	many more table lookups, some of which are often LDAP or
+	SQL based, trivial-rewrite clients must be be prepared for
+	the case that the resolver reports a failure while processing
+	a request (when it was unable to access a lookup table).
+	Files:  trivial-rewrite/resolve.c, local/resolve.c,
+	smtpd/smtpd_check.c.
+
+	Robustness: moving possible LDAP or SQL table lookups into
+	the trivial-rewrite server also required that trivial-rewrite
+	be running as multiple processes to reduce lookup latencies.
+	Files:  master/multi-server.c.
+
+	Workaround: don't discard all the DNS lookup results when
+	only one of the results has a malformed name or address.
+	File:  dns/dns_lookup.c.
+
+20021208
+
+	Cleanup: with the preliminary address domain classification
+	concept as implemented by the trivial-rewrite address
+	resolver, a lot of table lookups could be eliminated from
+	the SMTP server.  Files: smtpd/smtpd_check.c.
+
+	Feature: new relay_recipient_maps parameter, for optional
+	maps with all the recipients in the domains that match
+	$relay_domains (so you can reject mail for unknown relay
+	recipients). This is for consistency with virtual_xx_maps
+	and virtual_xx_domains, and with local_recipient_maps and
+	the local delivery agent.  File:  smtpd/smtpd_check.c.
+
+	Cleanup: removed support for obsolete #number domain forms.
+	File: smtpd/smtpd_check.c.
+
+20021209
+
+	The Postfix installation procedure no longer sets the
+	"chattr +S" bit on Linux queue directories. Wietse has
+	gotten too annoyed with naive reviewers who complain about
+	performance without having a clue of what they are comparing.
+
+	"Security": local_recipient_maps is now turned on by default,
+	to reject mail for non-existent users at the SMTP port.
+	See conf/main.cf for instructions, section REJECTING UNKNOWN
+	LOCAL USERS.
+
+	Safety: detection of missing or inaccessible passwd file
+	database, to prevent massive complaints from people who
+	suddenly lose all their mail because local_recipient_maps
+	is now turned on by default.
+
+20021210
+
+	Feature: recipient address verification, using the code
+	that already implements sender address verification.  Based
+	on suggestion by Matthias Andree.  Files: src/smtpd/smtpd.c,
+	src/smtpd/smtpd_check.c.
+
+20021211
+
+	Performance: doubled the default process limit (50->100)
+	and default queue manager active queue message/recipient
+	limits  (10k->20k).  File:  global/mail_params.h.
+
+	Bugfix: the change that begot us multiple trivial-rewrite
+	processes (good) also gave us multiple verify daemons (bad).
+	File: conf/post-install.
+
+20021212
+
+	Cleanup: allow transport map lookups to override error
+	mailer results (to avoid breaking existing installations),
+	and do transport map lookups before relocated map lookups.
+	Files:  trivial-rewrite/resolve.c, trivial-rewrite/transport.c.
+
+	Shortened the verify server's negative cache refresh time
+	from 12 hours to 2 hours. File:  global/mail_params.h.
+
+	Admin friendliness: the SMTP server now reports "User
+	unknown in {local recipient | virtual alias | virtual
+	mailbox | relay recipient} table". This will make trouble
+	shooting a little easier. Files: smtpd/smtpd_check.c,
+	trivial-rewrite/resolve.c.
+
+20021213
+
+	Cleanup: transport map entries with null nexthop ignored
+	relayhost settings. Making the code simpler also made it
+	more correct. Files: trivial-rewrite/resolve.c,
+	trivial-rewrite/transport.c.
+
+	Feature: "helpful_warnings" (default: yes) that can be
+	turned off if you really know what you're doing and want
+	to eliminate some unnecessary work.
+
+	Feature: enforcement of master.cf process limits for
+	processes such as qmgr and pickup that must run alone, and
+	processes such as cleanup and bounce that must run without
+	explicit process count limit. If an incorrect process limit
+	is specified in master.cf the service aborts.
+
+20021214
+
+	Cleanup: it looks like we finally get it right with transport
+	lookup table entries that either override or specify an
+	error transport without updating the nexthop information.
+	File:  trivial-rewrite/resolve.c.
+
+	Robustness: don't probe the sender address when probed for
+	our own address verification probe sender address. File:
+	smtpd/smtpd_check.c.
+
+	Performance: don't do UCE checks (which may result in 4xx
+	SMTP reply codes, and thus, repeated delivery attempts)
+	when we already know that the recipient does not exist.
+	Files:  smtpd/smtpd.c, smtpd/smtpd_check.c.
+
+20021215
+
+	Cleanup: further simplification of transport map handling
+	after some really fine hair splitting with Victor Duchovni.
+	Files: trivial-rewrite/resolve.c, trivial-rewrite/transport.c.
+
+20021216
+
+	Workaround:  transform the address local-part into unquoted
+	form only when the address domain is local and the local-part
+	contains routing operators.  Otherwise, we may damage the
+	address local-part by inserting space between non-operator
+	tokens. Some people use weird addresses and expect them to
+	be handled without damage.  File: trivial-rewrite/resolve.c.
+
+	Robustness: scan the resolved recipient address for routing
+	operators in the address local-part, even when the local
+	MTA does not recognize ! and % as valid operators.  File:
+	trivial-rewrite/resolve.c.
+
+	Cleanup: the address rewriting code no longer tries to
+	rewrite broken user@ or user@. address forms into even more
+	broken forms. bother. File: trivial-rewrite/rewrite.c.
+
+	Cleanup: the address resolver code now treates forms ending
+	in @ in a more rational manner (because the address rewriting
+	code no longer messes up by appending .my.domain).
+
+	Bugfix: a null address local-part before @domain now is
+	properly quoted just like the null address. File:
+	global/quote_82[12]_local.c.
+
+20021217
+
+	Cleanup: more work on the trivial-rewrite address rewriting
+	and address resolving code. New regression tests for address
+	rewriting and resolving that make some assumptions about
+	main.cf settings. Files: global/Makefile.in (assumptions),
+	global/rewrite_clnt.in, global/rewrite_clnt.ref,
+	global/resolve_clnt.in, global/resolve_clnt.ref.
+
+	Safety: configurable SMTPD reject codes for recipients not
+	in {local,relay}_recipient,virtual_{alias,mailbox}}_maps,
+	aptly named unknown_mumble_reject_code.  Postfix installs
+	with unknown_local_recipient_reject_code=450, unless the
+	site already ran Postfix with local_recipient_maps enabled.
+	Files:  smtpd/smtpd.c, smtpd/smtpd_check.c, conf/post-install.
+
+20021218
+
+	Feature: specify unverified_recipient_reject_code=250 or
+	unverified_sender_reject_code=250 to accept mail for an
+	address that is known to bounce. File: smtpd/smtpd_check.c.
+
+20021219
+
+	Bugfix: longjmp() while sending "go away" without setjmp()
+	in the QMQP server. Patrik Rak. File: qmqpd/qmqpd.c.
+
+	Safety: the XVERP extension is restricted to clients listed
+	in the authorized_verp_clients list (default: $mynetworks).
+	File: smtpd/smtpd.c.
+
+	Workaround: preliminary IPV6 support in valid_hostliteral().
+	File: util/valid_hostname.c.
+
+20021220
+
+	Bugfix: the reject_multi_recipient_bounce restriction had
+	an off-by-one error when used in smtpd_data_restrictions.
+	File: smtpd/smtpd_check.c.
+
+	Feature: new check_recipient_maps restriction that gives
+	finer control over when unknown recipients are rejected.
+	As with Postfix 1.1, the default is to do this at the end
+	of the recipient restrictions. Sites that want to improve
+	performance can put check_recipient_maps at the start of
+	the smtpd_client_restrictions list and avoid doing unnecessary
+	RBL lookups etc.  File:  smtpd/smtpd_check.c.
+
+	Feature: new show_user_unknown_recipient_table parameter
+	controls whether or not to reveal the lookup table name in
+	"User unknown" responses. The extra detail makes trouble
+	shooting easier but also reveals information that is nobody
+	elses business.
+
+20021221
+
+	Workaround: don't allow the transport map to override the
+	virtual alias class (error:User unknown) result.  File:
+	trivial-rewrite/transport.c.
+
+20030101
+
+	Documentation update: new-style virtual domains broke the
+	advanced content filtering example. Files: FILTER_README,
+	RELEASE_NOTES-2.0.
+
+20030102
+
+	Cleanup: use different client instances when the same map
+	is opened with different flags. File: global/maps.c.
+
+	Feature: proxymap server for Postfix table lookups. This
+	helps to consolidate the number of open lookup tables (such
+	as MYSQL or LDAP), or to overcome chroot restrictions
+	(example: specify proxy:unix:passwd.byname to avoid the
+	need for a copy of the UNIX passwd file in chroot jails).
+	Files:  global/dict_proxy.[hc], proxymap/proxymap.c
+
+	Cleanup: multiservers such as trivial-rewrite and the new
+	proxymap server now enforce the max_use total client number
+	limit more agressively, by not accepting new connections
+	after the limit is reached.  Based on a patch by Victor
+	Duchovni, Morgan Stanley. File:  master/multi_server.c.
+
+20030103
+
+	Cleanup: client stream endpoints not only have an idle time
+	limit ($ipc_idle) before a connection is closed, they now
+	also have a time to live ($ipc_ttl) to prevent connections
+	from becoming too persistent. This allows multi-servers
+	such as trivial-rewrite or the proxymap server to refresh
+	more frequently on busy systems. File:  global/clnt_stream.c.
+
+20030104
+
+	Cleanup: avoid warnings about flag mismatches when the same
+	lookup table is listed under both virtual_alias_maps and
+	virtual_mailbox_maps. Files: global/virtual8.h, virtual/virtual.c.
+
+	Bugfix: an obscure memory leak that puzzled me for more
+	than a year until I found out how to reproduce it. File:
+	util/vstream.c.
+
+20030105
+
+	Cleanup: removed the address syntax check from the queue
+	manager, since a better test was implemented recently in
+	the trivial-rewrite server. Files: *qmgr/qmgr_message.c.
+
+	Bugfix: redirect bounce/defer to the address verification
+	service where appropriate. Files: *qmgr/qmgr_bounce.c,
+	*qmgr/qmgr_defer.c.
+
+	Bugfix: "no such file or directory" warnings after "postfix
+	reload" when a chrooted smtpd reconnects to the proxy
+	service.  Fix: use "private/proxymap" if possible, otherwise
+	use "$queue_dir/private/proxymap".  File:  global/dict_proxy.c.
+
+	Robustness: daemons now chdir() to the queue directory
+	before running the pre-jail initialization code, so that
+	daemons running in stand-alone mode produce more consistent
+	results.  Files:  master/single_server.c, master/multi_server.c.
+	master/trigger_server.c.
+
+	Bugfix: "sendmail -bs" tried to access the proxymap service.
+	It should not try to open any user/domain/uce related tables
+	at all. File:  smtpd/smtpd.c.
+
+20030106
+
+	Bugfix: bouncing to owner-alias was broken, i.e. the mail
+	kept being deferred, and when that was fixed, another buglet
+	came to light. File: bounce/bounce.c.
+
+	Robustness: the master no longer aborts with "address
+	already in use" when inet_interfaces specifies the same IP
+	address multiple times, or when a TCP service in master.cf
+	specifies a hostname for which the same IP address is listed
+	multiple times. File: master/master_ent.c.
+
+20030107
+
+	Robustness: check that FILTER actions in SMTPD access maps
+	or cleanup header/body_checks have plausible syntax. Files:
+	smtpd/smtpd_check.c, cleanup/cleanup_message.c.
+
+20030109
+
+	Cleanup: unnecessary "premature end of file on xxx while
+	reading yyy" warnings became exposed after some code
+	simplification. Files" global/*_clnt.c, global/dict_proxy.c
+
+	Robustness: undo the change that causes a multi-server
+	process to stop accepting new connections while it still
+	services existing clients for an extended amount of time.
+	We need a better process retirement strategy. File:
+	master/multi_server.c.
+
+20030110
+
+	Cleanup: the virtual_mailbox_maps parameter is now optional
+	even when virtual_mailbox_domains is. This makes virtual
+	mailbox domains more like relay domains and the local
+	domain.
+
+	Portability: the makedefs script now uses the pcre-config
+	utility to find out where things are installed.
+
+	Bugfix: the SMTP server did not recognize the local built-in
+	double bounce address as local. Reported by Matthias Andree.
+	For safety sake, threw in the local postmaster address as
+	well.  File:  smtpd/smtpd_check.c.
+
+20030113
+
+	Added MAILER-DAEMON to the list of always recognized local
+	addresses, since it is generated by Postfix bounces. File:
+	smtpd/smtpd_check.c.
+
+20030114
+
+	Bugfix: transport_errno was not reset upon successful
+	transport map wildcard lookup after an earlier failure.
+	Reported by Victor Duchovni. File:  trivial-rewrite/transport.c.
+
+	Cleanup: unnecessary warnings from the proxymap client
+	after proxymap server disconnect. File:  global/dict_proxy.c.
+
+	Cleanup: Patrik Rak found a few more chattr invocations
+	that were missed 20021209. Files: postfix-install,
+	conf/post-install.
+
+	Cleanup: the pcre-config command can produce null outputs.
+	Matthias Andree.  File: makedefs.
+
+	Bugfix: the virtual(8) Makefile included $(AUXLIBS) in the
+	dependencies.
+
+20030118
+
+	Typos: some hyperlinks referred to flushd, which is the
+	name that was used before the flush service was released.
+	Reported by Victor Duchovni.
+
+	Cleanup: smtpd no longer needed to open relocated_maps.
+
+20030119
+
+	Cleanup: bounce messages used "X-Postfix" even when mail_name
+	was set to something other than the default "Postfix" name.
+	File: bounce/bounce-notify_util.c.
+
+20030120
+
+	Bugfix: wrong FILTER_README instructions for disabling
+	virtual alias mapping in the cleanup server before the
+	content filter.
+
+	Bugfix: wrong FILTER_README instructions for destination-dependent
+	filtering, because relay_domains was specified incorrectly.
+
+20030122
+
+	Bugfix: 20021207 (move relocated table lookup from queue
+	manager to trivial-rewrite server) broke relocated table
+	lookup results with mail not rejected at the SMTP port.
+	Files:  *qmgr/qmgr_deliver.c, *qmgr/qmgr_message.c.
+
+20030123
+
+	Bugfix: a widely used maildir filename algorithm was broken.
+	Postfix now uses TIME.DEVICE_INODE.HOST. Files: local/maildir.c,
+	virtual/maildir.c.
+
+20030124
+
+	Cleanup: queue structures no longer overload queue name
+	and nexthop destination. Files: *qmgr/qmgr_message.c,
+	*qmgr/qmgr_queue.c, *qmgr/qmgr_deliver.c.
+
+20030125
+
+	Feature: "REDIRECT user@domain" action in access maps or
+	in header/body_checks causes mail to be sent to the specified
+	address instead of the intended recipient(s). I would never
+	recommend that people use this to redirect (bounced) SPAM
+	to the beneficiaries of an advertisement campaign.  Files:
+	smtpd/smtpd_check.c, cleanup/cleanup_message.c,
+	*qmgr/qmgr_message.c.
+
+20030126
+
+	Update: maildir filename algorithm updated according to
+	today's version of http://cr.yp.to/proto/maildir.html.
+
+20030127
+
+	Cleanup: use separate error messages for separate problems
+	with computing the list of SASL authentication mechanisms.
+	File: smtpd/smtpd_sasl_glue.c.
+
+20030130
+
+	Bugfix: allow $name in default time values. File:
+	global/mail_conf_time.c.
+
+20030205
+
+	Feature: allow !, /file/name and map:name in masquerade_exceptions.
+	By Liviu Daia.  Files:cleanup_init.c, cleanup.h,
+	cleanup_masquerade.c.
+
+20030219
+
+	Bugfix: the local pickup daemon skipped unterminated records,
+	since they happened to have the same record type code as
+	content filtering instructions. Victor Duchovni.  Files:
+	global/rec_type.h, pickup/pickup.c.
+
+	Portability: Postfix could block, and thus not enforce
+	command execution time limits, while delivering mail to
+	command.  File: global/pipe_command.c.
+
+	Bugfix: command execution time limits were not enforced
+	because the child process killing code in pipe_command()
+	was running with the wrong privileges. Problem reported by
+	Ben Rosengart, Panix. File: global/pipe_command.c.
+
+	Bugfix: duplicate recipient filtering in the cleanup server
+	did not eliminate virtual expansion duplicates with the
+	same original recipient. File: cleanup/cleanup_out_recipient.c.
+
+20030223
+
+	Cleanup: added postmap/postalias -p option (do not inherit
+	the source file permissions when creating a new file), for
+	completeness.  A feature that can't be turned off is a bug.
+	Files:  postmap/postmap.c, postalias/postalias.c.
+
+	Bugfix: smtpd_hard/soft_error_limit off-by-one error, so
+	that the real limit was one larger than the configured
+	value.  File: smtpd/smtpd.c, smtpd/smtpd_chat.c.
+
+20030226
+
+	Safety: proxymap server defense against potential deadlock
+	when some library routine wants to open a proxied table.
+	Instead, proxymap opens the requested table directly. File:
+	proxymap/proxymap.c.
+
+	Portability: updated AIX 5.x system dependent definitions.
+	File: util/sys_defs.h.
+
+20030227
+
+	Bugfix: added mynetworks to the list of proxy_read_maps
+	parameter settings that are pre-authorized to use proxied
+	table lookups.  File: global/mail_params.h.
+
+	Cleanup: daemons now log what table has changed before
+	restarting. Files: dict.c, and anything that invoked
+	dict_changed().
+
+	Cleanup: more consistency in the naming of lookup table
+	handles as generated by maps(3) and by match_list(3).
+
+20030305
+
+	Workaround: Postfix removes too long non-address text from
+	message headers in order to protect vulnerable Sendmail
+	systems against exploitation of the remote buffer overflow
+	vulnerability described in CERT advisory CA-2003-07.
+
+20030311-19
+
+	Bugfix: the access map actions HOLD, DISCARD, FILTER and
+	REDIRECT were broken with smtpd_delay_reject=no and with
+	ETRN.  This required re-architecting of the actions code.
+	Files:  smtpd/smtpd.[hc], smtpd/smtpd_check.c, smtpd/smtpd_state.c.
+
+20030315
+
+	Bugfix: the postsuper manual page documented support for
+	the -c command line option, but it was not implemented.
+	File: postsuper/postsuper.c.
+
+	Bugfix: the Postfix 2.0 recipient map checking code broke
+	the VRFY command, causing it to reply with status code 252
+	for non-existent addresses. This required re-architecting
+	the recipient table lookup code. File:  smtpd/smtpd_check.c.
+
+20030319
+
+	Feature: configurable limit on virtual alias expansion size
+	and nesting depth, via the virtual_alias_expansion_limit
+	and virtual_alias_recursion_limit parameters. The default
+	limits are compatible with past Postfix versions.  Victor
+	Duchovni, Morgan Stanley. Files: /sample-resource.cf,
+	html/resource.html, cleanup/cleanup.c, cleanup/cleanup_init.c,
+	cleanup/cleanup_map1n.c.
+
+	Feature: the installation procedure records build information
+	(by default:  in /etc/postfix/makedefs.out).
+
+20030324
+
+	Bugfix: smtp-source flushed too often, causing suboptimal
+	performance with smtp-source sending directly into smtp-sink.
+	Files: smtpstone/smtp-source.c.
+
+20030410
+
+	Safety: log a fatal error when a net/mask pattern has a
+	non-zero host part, so that mail delivery is deferred.
+	File: util/match_ops.c.
+
+20030411
+
+	Bugfix: extraneous warning about out-of-order original
+	recipient records by Patrik Rak. Files: *qmgr/qmgr_message.c.
+
+20030412
+
+	Workaround: log a warning and reset the queue file time
+	stamps when the file system clock is ahead of the local
+	clock.  File: global/mail_stream.c.
+
+20030414
+
+	Feature: PostgreSQL client module, adopted by LaMont Jones.
+	Files: README_FILES/PGSQL_README, util/dict_pgsql.c,
+	util/dict_pgsql.h, conf/sample-pgsql-aliases.cf.
+
+	Cleanup: the generic smtp client/server code in smtp_stream.c
+	now has an explicit flush operation, and the smtp-source/sink
+	programs are updated to take advantage of this.
+
+	Cleanup: the file system clock drift detection code now
+	runs only once per process instance, to minimize the
+	performance impact. File: global/mail_stream.c.
+
+	Robustness: avoid TIME_WAIT state with smtp/qmqp-source
+	client sockets.  This puts less strain on local system
+	resources.
+
+20030415
+
+	Cleanup: the file system clock drift detection code now
+	runs only for incoming mail. File: global/mail_stream.c.
+
+20030416
+
+	Bugfix: missing partial last line when 1) someone submits
+	8-bit mail not ending in newline via /usr/sbin/sendmail
+	and 2) MIME input processing is turned off, and 3) MIME
+	8bit->7bit conversion is requested upon delivery via SMTP.
+
+	Cleanup: auto-bcc recipients are now added in one place
+	(the cleanup server) instead of by individual front-end
+	servers (pickup, smtpd, qmqpd). This makes it easier to
+	add auto-bcc features that trigger on sender or recipient
+	addresses.
+
+	Cleanup: "sendmail -t" (recipients from headers) is now
+	implemented by the sendmail command instead of by the
+	cleanup server. This means that the extract_recipient_limit
+	configuration parameter is no longer needed.  Files:
+	sendmail/sendmail.c, cleanup/cleanup_message.c,
+	cleanup/cleanup_extracted.c.
+
+	Compatibility: "sendmail -t" (recipients from headers) now
+	accepts command-line recipients instead of complaining.
+	The extracted header recipients are added to the command-line
+	recipients.
+
+	Feature: sender/recipient_bcc_maps. These are indexed by
+	sender/recipient address and are examined when mail enters
+	from outside of Postfix. Files: cleanup/cleanup_addr.c.
+	cleanup/cleanup_envelope.c cleanup/cleanup_extracted.c.
+
+20030417
+
+	Feature: the SMTP client now falls back to native name
+	service lookups (including /etc/hosts) when a host cannot
+	be found in the DNS. This is controlled by a new parameter
+	smtp_host_lookup (default: dns, native). Files: smtp/smtp.c,
+	smtp/smtp_addr.c.
+
+20030418
+
+	Bugfix: "sendmail -t" broke with unrecognized message
+	headers.
+
+20030419
+
+	Feature: "postcat -q" searches the queue for the named
+	file.
+
+	Cleanup: made postcat "record names" output more consistent.
+
+20030421
+
+	Debugging: added some extra detailed error logging to the
+	pipe-to-command delivery, to help folks with bizarre file
+	truncation problems. File: global/pipe_command.c.
+
+20030424
+
+	Cleanup: readlline() did not terminate the result before
+	complaining about lines starting with whitespace.
+
+	Cleanup: eliminated valid_hostname warning for invalid
+	queue file names. File: global/mail_queue.c.
+
+	Bugfix: lost three lines of code when readying the postcat
+	command for release, which broke postcat -q. File:
+	postcat/postcat.c.
+
+	Bugfix: the Postfix sendmail command applied the message
+	size limit when running as newaliases. The limiting code
+	is now moved to the message enqueuing branch of the code.
+	File: sendmail/sendmail.c.
+
+	Documentation: start of documentation for the algorithm of
+	Patrik Rak's clever queue manager scheduler (nqmgr). Files:
+	conf/sample-scheduler.cf, README_FILES/SCHEDULER_README.
+
+20030429
+
+	Bugfix: while verifying an address, the LMTP client entered
+	a forbidden "next" sender state after the last recipient.
+	Fix by Vladimir Davydoff. File: lmtp/lmtp_proto.c.
+
+	Bugfix: "," was not recognized in proxy_read_maps settings.
+	Fix by Leandro Santi. File: proxymap/proxymap.c.
+
+20030502
+
+	Bugfix: defer delivery after .forward etc. file read error.
+	File: local/token.c. Problem reported by Ben Rosengart,
+	Panix.
+
+20030503
+
+	Bugfix: the Postfix LMTP client used the wrong service
+	name, causing trouble with SASL 2.1.13.  Daniel Schales,
+	Louisiana Tech. File: lmtp/lmtp_sasl_glue.c.
+
+20030518
+
+	Workaround: IRIX select() reports that a non-blocking file
+	descriptor is writable while write() transfers zero bytes.
+	File:  util/vstream.c. Superseded by change 20030523.
+
+20030520
+
+	Cleanup: future time stamps in Received: headers and negative
+	delays in delivery agent logging after "postdrop -r",
+	because deferred queue files had future file modification
+	times.  File:  src/postsuper/postsuper.c.
+
+20030521
+
+	Cleanup: nqmgr warnings about "recipient count mismatch"
+	after "postdrop -r", because the cleanup server did not
+	count the "already done" recipients. Problem reported by
+	Richard Stockton, Gramma Software. Files:
+	cleanup/cleanup_envelope.c, cleanup/cleanup_extracted.c.
+
+20030523
+
+	Workaround: IRIX select() reports that a non-blocking file
+	descriptor is writable while write() transfers zero bytes.
+	File:  global/pipe_command.c.
+
+20030523-20030605
+
+	Cleanup: rewrote the queue file record processing loops in
+	pickup, cleanup and in [n]qmgr. This code had deteriorated
+	a lot as the result of small changes over the years. This
+	change brings the code closer to "obviously correct". Files:
+	cleanup/cleanup_envelope.c, cleanup/cleanup_extracted.c,
+	*qmgr/qmgr_message.c.
+
+	Cleanup: Postfix no longer produces queue files with
+	backwards compatibility data for Postfix versions < 1.0
+	(a.k.a.  20010228). Files: cleanup/cleanup_extracted.c,
+	showq/showq.c.
+
+	Performance: the queue manager no longer has to examine
+	every queue file record before it can start deliveries.
+	This helps to avoid thrashing with very large mailing lists.
+	Postfix queue files have an extra field in the size record
+	with queue manager processing hints.  This change is backward
+	and forward compatible.  Files:  cleanup/cleanup_envelope.c,
+	cleanup/cleanup_extracted.c, *qmgr/qmgr_message.c.
+
+20030528
+
+	Compatibility: "sendmail -q<time>" without -bd option now
+	exits immediately, instead of waiting for input on the
+	standard input stream and screwing up system boot sequences.
+	File: sendmail/sendmail.c.
+
+20030530
+
+	Bugfix: client access denied with smtpd_delay_reject=no
+	broke "sendmail -bs". Fix by Victor Duchovni, Morgan Stanley.
+	File: smtpd/smtpd.c.
+
+20030531
+
+	Compatibility: allow <@site,@site:address> route addresses
+	in SMTP commands.  File: smtpd/smtpd.c.
+
+20030605
+
+	Cleanup: input checks moved from the pickup daemon to the
+	postdrop mail submission command; this is to prepare for
+	direct mail submission from postdrop->cleanup without going
+	through the maildrop directory and the pickup service.
+	Files: pickup/pickup.c, postdrop/postdrop.c.
+
+	Bugfix: the "dead host" backoff timer in the MySQL client
+	didn't work.  Fix by Leandro Santi. File: util/dict_mysql.c.
+
+	Bugfix: same problem in the PostgreSQL client. File:
+	util/dict_pgsql.c.
+
+	Workaround: turned off non-blocking write to pipe because
+	too many systems give a weird write() result. File:
+	global/pipe_command.c.
+
+	Cleanup: added support for vstream_fseek(.., .., SEEK_END).
+	File: util/vstream.c.
+
+20030608
+
+	Feature: separate address resolver controls for address
+	verification probe messages:  address_verify_{local,virtual,
+	relay,default}_transport, address_verify_relayhost, and
+	address_verify_transport_maps. The default values are the
+	regular versions of the same controls. Files: trivial-rewrite/*,
+	global/resolve_clnt.[hc], *qmgr/qmgr_message.c.
+
+20030609
+
+	Workaround: Solaris blocking socket read() may hang.  Hernan
+	Perez Masci and Leandro Santi. File: smtpd/smtpd.c.
+
+	Bugfix: the "unread recipient" counter needs to be restored
+	after the queue manager has a problem reading a queue file.
+	Fix by Patrik Rak. File: nqmgr/qmgr_message.c.
+
+20030610
+
+	Cleanup: the verify server now uses asynchronous submission
+	of mail probes, so it will no longer block for in_flow_delay
+	seconds when mail arrives faster than it is delivered.
+	Still need to make mail_stream_finish() asynchronous in
+	order to avoid blocking for trigger_timeout seconds when
+	the queue manager is overwhelmed.  Files:  global/post_mail.c,
+	verify/verify.c.
+
+	Bugfix: removed extraneous sleep() after the last attempt
+	to retrieve address verification status.  File: smtpd/smtpd.c.
+
+20030611
+
+	Bugfix: the stricter postdrop input filter broke "sendmail
+	-bs". Found by Lutz Jaenicke. File: smtpd/smtpd.c.
+
+20030614
+
+	Portability: Dropped support for client side LDAP caching.
+	As of release 2.1.13 OpenLDAP no longer supports client
+	side caching, it has been deprecated for some time, and
+	never worked well.  Implemented by Victor Duchovni, Morgan
+	Stanley, and further enhanced by Lamont Jones, HP. Files:
+	src/util/dict_ldap.c, conf/sample-ldap.cf,
+	README_FILES/LDAP_README.
+
+	Safety: Given suitable invalid database contents, LDAP
+	lookups can produce too many results, enter an infinite
+	loop in the expansion of "special result attributes" (LDAP
+	DNs and LDAP URLs) or just consume excessive server resources
+	returning large result sets.  Three new (per LDAP map)
+	configuration parameters enable one to set limits on
+	recursive nesting, result expansion and the server response
+	"entry" count. Implemented by Victor Duchovni, Morgan
+	Stanley, further enanced by Lamont Jones, HP. Files:
+	src/util/dict_ldap.c, conf/sample-ldap.cf,
+	README_FILES/LDAP_README.
+
+20030616
+
+	Feature: in mail delivery status reports, report the sender
+	address as X-Postfix-Sender. Matthias Andree. File:
+	bounce/bounce_notify_util.c.
+
+	Cleanup: in mail delivery status reports, transform the
+	original recipient into xtext format as required by RFC
+	1891. Files: bounce/bounce_notify_util.c, util/xtext.[hc].
+
+	Cleanup: more accurate "postfix check" warning for files
+	that miss one or more of the required mode 02111 execute
+	permission bits. Matthias Andree. File: conf/postfix-script.
+
+20030618
+
+	After "postfix reload", the master daemon now warns when
+	inet_interfaces has changed, and ignores the change, instead
+	of passing incorrect information to the smtp server. File:
+	master/master_ent.c.
+
+20030619
+
+	Feature: the Postfix SMTP server can send all mail into a
+	proxy server, for example a real-time SPAM filter. This
+	proxy is supposed to send the mail into another Postfix
+	SMTP server process for normal delivery. Files: smtpd/smtpd.c
+	smtpd/smtpd_proxy.[hc].
+
+20030620
+
+	Bugfix: a cut-and-paste error caused the proxy server's
+	354 status code to be reported when a proxy connection
+	broke during the DATA phase. File: smtpd.c.
+
+20030620
+
+	Bugfix: after the last change to postdrop, postcat no longer
+	recognized maildrop files as valid. File: postcat/postcat.c.
+
+	Bugfix: after moving "sendmail -t" address extraction to
+	sendmail, "-t" broke multi-line recipient headers.  Victor
+	Duchovni, Morgan Stanley. File: sendmail/sendmail.c.
+
+20030621
+
+	Workaround: the safe_open(O_CREAT) race condition exploit
+	avoiding code tries a little harder when it encounters a
+	race condition. File: util/safe_open.c.
+
+20030624
+
+	Bugfix: reject_unverified_address() set the defer_if_reject
+	flag when the verify service was unavailable (which never
+	happens). Victor Duchovni, Morgan Stanley. File:
+	smtpd/smtpd_check.c.
+
+	New parameters address_verify_poll_{count,delay} that
+	control how often to poll the address verification service
+	for the completion of an address verification request.
+	Specify address_verify_poll_count=1 to implement a crude
+	form of greylisting, that is, always defer the first delivery
+	attempt for an unknown address.  File: smtpd/smtpd_check.c.
+
+	Bugfix: after the last change to postdrop, postcat no longer
+	recognized non-maildrop queue files as valid. File:
+	postcat/postcat.c.
+
+20030629
+
+	Cleanup: replaced references to "simulated virtual domains"
+	by "virtual alias domains". Victor Duchovni, Morgan Stanley.
+
+20030630
+
+	Feature: smtp_quote_rfc821_envelope=(yes|no) to control
+	RFC 821 style quoting of MAIL FROM and RCPT TO addresses.
+	Files: global/mail_params.h, smtp/smtp.c, smtp/smtp_proto.c.
+
+20030701
+
+	Bugfix: multi-recipient probes triggered a bug in the SMTP
+	client.  File: smtp/smtp_proto.c.
+
+	Feature: enable_original_recipient (default: yes) to control
+	whether Postfix keeps track of original recipient address
+	information. Victor Duchovni, Morgan Stanley.  Files:
+	cleanup/cleanup.c, cleanup/cleanup_init.c,
+	cleanup/cleanup_out_recipient.c, global/log_adhoc.c,
+	global/mail_copy.c, *qmgr/qmgr_message.c.
+
+	Feature: !/pattern/ support for PCRE lookup tables.  Victor
+	Duchovni, Morgan Stanley.  Files: util/dict_pcre.c.
+
+	Cleanup: allow whitespace after patterns in repexp and pcre
+	tables. Victor Duchovni, Morgan Stanley.  Files:
+	util/dict_pcre.c, util/dict_regexp.c.
+
+20030702
+
+	Feature: CIDR lookup table support, very remotely based on
+	code by Jozsef Kadlecsik. Files: proto/cidr_table,
+	util/dict_cidr.[hc].
+
+	Feature: TCP lookup table support, finally finished.  Files:
+	proto/tcp_table, proto/dict_tcp.[hc].
+
+20030705
+
+	Feature: new receive_override_options parameter controls
+	what happens before or after an external content filter:
+	rejecting unknown recipients, canonical and virtual address
+	mapping, address masquerading, automatic BCC recipients
+	and header/body checks. This eliminates the need to configure
+	multiple cleanup services in the master.cf file.
+
+20030707
+
+	Feature: context dependent SASL security options (i.e.
+	different options when TLS is enabled/disabled). Lutz
+	Jaenicke.  Files:  */*sasl_glue.[hc].
+
+20030708
+
+	Hardened the attr_scan routines for exposure to an untrusted
+	environment, in preparation for possible use with SMTP
+	policy delegation to an external server.
+
+	Feature: address filter for RBL lookups, for use with
+	multi-valued RBL services. File: smtpd/smtpd_check.c.
+
+20030709
+
+	Cleanup: use off_t instead of int for VSTREAM file offsets.
+	This was needed for mailboxes > 2GB on 32-bit systems.
+	Files: util/vstream.c, global/mail_copy.c.
+
+20030710
+
+	Support for multiple A and TXT results in RBL lookups.
+	Victor Duchovni, Morgan Stanley.  File: smtpd/smtpd_check.c.
+
+	Support for attribute-based query-reply protocols.  Files:
+	util/attr_clnt.[hc], util/auto_clnt.[hc].
+
+20030711
+
+	Support for plain "name=value\n" attribute protocol.  Files:
+	util/attr_{scan,print}_plain.c.
+
+	Bugfix: the LMTP session caching code did not reset the
+	EHLO server feature list when it needed to reconnect.
+	Problem found by Tobias Erbsland.
+
+20030712
+
+	Feature: delegated SMTP policy server. As an example, see
+	the greylisting server in examples/smtpd-policy.  Specify
+	"check_smtpd_policy_service" in smtpd_mumble_restrictions.
+	See SMTPD_POLICY_SERVICE_README for details.
+
+20030716
+
+	Bugfix: in the sample policy server, changed "ok" into
+	"dunno" so the server can be used in the middle of a
+	restriction list.
+
+	Cleanup: when an RBL reply has multiple TXT records,
+	concatenate them up to some reasonable limit, instead of
+	selecting one randomly.  File:  smtpd/smtpd_check.c.
+
+	Safety: always truncate SMTP server error replies to 512
+	bytes.  File: smtpd/smtpd_check.c.
+
+20030717
+
+	Documentation: added description of policy_time_limit to
+	the SMTPD_POLICY_README document.
+
+	Documentation: corrected the command time limit parameter
+	syntax in the spawn(8) manual page.
+
+	Feature: defer_if_permit and defer_if_reject actions in
+	access tables, mainly for use by the delegated policy
+	server. Files: smtpd/smtpd_check.c, proto/access.
+
+20030725
+
+	The dict_pgsql module did not use dict_alloc() and dict_free(),
+	causing improper initialization and a memory leak. Leandro
+	Santi. File: util/dict_pgsql.c.
+
+	Cleanup: added open_flags sanity checks to the dict_pgsql
+	and dict_mysql modules. These maps must be opened in
+	read-only mode.
+
+20030731
+
+	Bugfix: virtual(8) was changed to use mail_addr_find()
+	instead of virtual8_maps_find(), but the SMTP server's
+	virtual mailbox recipient validation was not updated.
+
+20030804
+
+	Bugfix: the 20030712 safety against invalid DNS results
+	was broken. Reported by Ralf Hildebrandt. File:
+	dns/dns_lookup.c.
+
+20030805-12
+
+	Safety: the pipe daemon now defers delivery with a warning
+	when it is given a non-existent command-line macro name.
+	File:  pipe/pipe.c.
+
+20030810
+
+	Bugfix: dict_ldap had a few harmless memory leaks.  By
+	Liviu Daia.  File: util/dict_ldap.c.
+
+	Feature: support for LDAP URLs in the LDAP parameter
+	"server_host", if Postfix is linked against OpenLDAP.  This
+	allows Postfix to connect to LDAP SSL sources.  By Liviu
+	Daia.  File: util/dict_ldap.c.
+
+20030811
+
+	Cleanup: produce a warning when host:port specifies a badly
+	formatted numerical port.  Files:  util/find_inet.c,
+	smtp/smtp_connect.c, lmtp/lmtp_connect.c.
+
+20030822
+
+	Feature: the export_environment and import_environment
+	parameters now accept name=value information that will be
+	entered into the new environment. File: util/clean_env.c.
+
+20030823
+
+	Feature: smtpd_sasl_exceptions_networks parameter to prevent
+	Postfix from offering AUTH  to clients that match the listed
+	networks. Based on code by Ben Rosengart, Panix. Files:
+	conf/sample-auth.cf, smtpd/smtpd.c.
+
+20030902
+
+	Portability: the Postfix master resets the file size to
+	the largest possible off_t value when the actual limit
+	appears to overflow the off_t range. Files: util/sys_defs.h,
+	util/file_limit.c. A fine sample of bit banging.
+
+20030905
+
+	Workaround: Solaris 8 select() claims that a non-blocking
+	socket is readable and then read() fails with EAGAIN. Files:
+	util/timed_read.c and as precautionary measure,
+	util/timed_write.c.
+
+	Bugfix: dict_register() should not be called from dict_open()
+	in dict_mysql and dict_pgsql.  Liviu Daia.  Files:
+	util/dict_mysql.c, util/dict_pgsql.c.
+
+	Feature: LDAP parameters can now be specified in external
+	files.  This makes it possible to securely store bind
+	passwords for plain auth outside of main.cf (which is world
+	readable).  By Liviu Daia, based on a suggestion by Victor
+	Duchovni and Lamont Jones.  File: util/dict_ldap.c.
+
+	Feature: STARTTLS option for LDAP, if Postfix is linked
+	against OpenLDAP.  By Liviu Daia, amended by Victor Duchovni.
+	File:  util/dict_ldap.c.
+
+	Cleanup: connections to LDAP sources are now postponed
+	until they are actually needed.  By Liviu Daia.  File:
+	util/dict_ldap.c.
+
+20030908
+
+	The 20030905 Solaris workaround triggers too many warnings.
+	TCP sockets are back to blocking, and keepalives are turned
+	on to kill off dead sockets, as suggested by Leandro Santi.
+	Files: master/{single,multi}_server.c, smtpd/smtpd.c,
+	util/sys_defs.h.
+
+20030909
+
+	Bugfix: the LMTP session caching code had problems with
+	SASL authentication after the first connection, and pipelining
+	was working poorly.  Fix by Victor Duchovni, Morgan Stanley.
+	Files: lmtp/lmtp.c, lmtp/lmtp_proto.c.
+
+20030912
+
+	Workaround: besides SMTP server sockets, SMTP client sockets
+	can also hang on Solaris, as reported by Leandro Santi. In
+	order to deal with this at the root, all connection management
+	is now done by sane_accept() and sane_connect().  Both turn
+	on keepalives on Solaris.
+
+20030913
+
+	Safety: set-gid commands don't trust TZ.  File: msg_syslog.c.
+
+20030914
+
+	Address extension propagation wasn't documented enough when
+	it was added to Postfix. Based on patches by Roman Neuhauser.
+
+	Added clarifying notes to main.cf, master.cf and access by
+	Dean Gibson.
+
+	In header/body_checks, DUNNO is now the preferred action
+	instead of the now deprecated OK. This may confuse fewer
+	people.
+
+	In header/body_checks, allow text after IGNORE and DUNNO,
+	suggested by Victor Duchovni, Morgan Stanley.  File:
+	src/cleanup/cleanup_message.c.
+
+	Feature: reject_rhsbl_helo. File: smtpd/smtpd_check.c.
+
+	Bugfix? The LMTP and SMTP clients now send "MAIL FROM:<sender>
+	AUTH=<>" when SASL authenticated. Suggested by by Victor
+	Duchovni, Morgan Stanley. Files: smtp/smtp_proto.c,
+	lmtp/lmtp_proto.c.
+
+20030915
+
+	Bugfix: mail rejected by the before-queue content filter
+	was mis-labeled as a software error; it should be labeled
+	as a policy error instead. File: smtpd/smtpd.c.
+
+	Cleanup: postcat is now null-byte transparent. File:
+	postcat/postcat.c.
+
+20030916
+
+	Feature: ``check_{sender,recipient}_mx_access maptype:mapname''
+	applies the named Postfix access table to the MX host name
+	and IP addresses for the sender or recipient address. If
+	no MX record is found, the A record is used instead. File:
+	smtpd/smtpd_check.c.
+
+	Feature: ``check_{sender,recipient}_ns_access maptype:mapname''
+	applies the named Postfix access table to the DNS server
+	hostname and IP addresses for the sender or recipient
+	address. If no NS record is found, the parent domain is
+	used instead. File: smtpd/smtpd_check.c.
+
+20030917
+
+	Feature: ``check_helo_{ns,mx}_access maptype:mapname'',
+	same semantics as sender and recipient.
+
+	Multiple LDAP lookup tables in the one Postfix process now
+	share one LDAP connection. Code by Victor Duchovni, Morgan
+	Stanley.  File: util/dict_ldap.c.
+
+	Performance: with prefix_domain specified for an LDAP lookup
+	table, lookups of @domain are skipped. Code by Victor
+	Duchovni, Morgan Stanley.  File: util/dict_ldap.c.
+
+	Safety: check_mumble_{mx,ns}_access refuses to be used for
+	whitelisting. The Postfix SMTP server will reject the
+	request with "451 server configuration error" and will log
+	a warning explaining why. File: smtpd/smtpd_check.c.
+
+20030918
+
+	Bugfix: check_mumble_ns_access did not correctly look up
+	NS records of parent domains, causing mail to be deferred
+	with a 450 status code. File: smtpd/smtpd_check.c.
+
+20030919
+
+	Robustness: check_mumble_{mx,ns}_access skip over DNS lookup
+	failures instead of deferring mail. This is not as bad as
+	it appears to be because the restrictions can't be used
+	for whitelisting.  File: smtpd/smtpd_check.c.
+
+20030920
+
+	Bugfix: the 20030917 LDAP connection sharing code introduced
+	a compilation problem with non-OpenLDAP implementations.
+	Fix by Liviu Daia. File: util/dict_ldap.c
+
+	Compatibility: the LDAP server_host parameter now supports
+	all the usual Postfix list element delimiters. Some LDAP
+	libraries support just SPACE, others SPACE and ",". Postfix
+	now normalizes the host list into a space separated format.
+	This is less surprising to Postfix users used to the full
+	range of delimeters in other contexts. Implemented by Liviu
+	Daia. File: util/dict_ldap.c
+
+	Bugfix: after returning too old mail, the bounce daemon
+	now locks the original queue file and deletes deferred
+	recipients, to avoid repeated bounce notifications when
+	the queue manager is restarted. Files:  bounce/*.[hc],
+	global/bounce_log.[hc], global/{bounce,defer}.[hc] and
+	everything that invokes these routines including queue
+	manager and delivery agents.
+
+20030922
+
+	Feature: "XADDR address hostname" SMTP command, for SMTPD
+	restriction debugging, and for sites with fetchmail-like
+	software that extracts client information from the first
+	Received:  header. The smtpd_authorized_xaddr_clients
+	parameter specifies what clients are allowed to use XADDR
+	(default: none).  Files:  smtpd/smtpd.c.
+
+20031015
+
+	Workaround: smtpd access maps should not apply subdomain
+	name magic to numerical hostnames. File: smtpd/smtpd_check.c.
+
+	Safety: the local delivery agent now defers delivery when
+	alias lookup produces an empty result. File: local/alias.c.
+
+20031019
+
+	Workaround: disable request/reply size limit in attr_scan*.c
+	to prevent mail from getting stuck when rewriting a malformed
+	message header.  This limit was turned on with snapshot
+	20030715 to harden the protocol that is used by SMTPD policy
+	delegation. A "no code change" workaround is to specify
+	"header_size_limit = $line_length_limit".  The proper fix
+	is to enforce request/reply size limits only for data from
+	outside of Postfix. Problem reported by Brandon Mullenberg,
+	Dialup USA. Files:  util/attr_scan*.c.
+
+	Feature: "XLOGINFO address hostname" SMTP command, so that
+	Postfix daemons behind SMTPD pass-through proxies log useful
+	client name/address information instead of localhost[127.0.0.1].
+	The smtpd_authorized_xloginfo_clients parameter specifies
+	what clients are allowed to use XLOGINFO (default: none).
+	Files:  smtpd/smtpd.c.
+
+	Cleanup: renamed the authorized_verp_clients parameter to
+	smtpd_authorized_verp_clients for consistency.
+
+20031021
+
+	Workaround: the demo greylist script now uses BTREE instead
+	of HASH files for hopefully better stability. The real fix
+	is to use a single updater process that serves multiple
+	clients. That approach seems to work well with the verify
+	daemon. File: examples/smtpd-policy/smtpd-policy.pl.
+
+20031022
+
+	Safety: the SMTP server now warns when the queue_minfree
+	value is less than twice the message size limit. File:
+	smtpd/smtpd.c.
+
+	Safety:  the SMTP server no longer accepts mail when the
+	amount of free space is less than twice the message size
+	limit.  File: smtpd/smtpd_check.c.
+
+	Safety: log a warning and defer mail when canonical or
+	virtual lookups return a non-address result (like a string
+	that contains no address). File: global/mail_addr_map.c.
+
+	Safety: log a warning and defer mail when any map lookup
+	returns an empty string result, and explain that "no result"
+	is expected in case of a "not found" condition. This happens
+	with incorrectly implemented SQL or LDAP tables. File:
+	global/maps_find.c.
+
+20031023
+
+	Bugfix: the MYSQL and PGSQL modules invoked dict_register().
+	This was fixed a while ago but never made it into the
+	distribution. Files: util/dict*sql.c.
+
+	Robustness: added three ISSPACE() calls in the smtpd proxy
+	parser. File: smtpd/smtpd_proxy.c.
+
+20031024
+
+	Portability: added localhost to mydestination for sites
+	that turn off append_dot_mydomain. File: global/mail_params.h.
+
+20031027
+
+	Portability: MacOS X Bind8 compatibility. File: makedefs.
+
+20031103
+
+	Robustness: flush pipelined "." and "quit" replies to avoid
+	repeated deliveries in case of a program crash (you know,
+	the kind of thing that happens before Postfix release :-).
+	File:  smtpd/smtpd.c.
+
+20031105
+
+	Portability: turn off NETINFO support for MacOS X Panther
+	by default. Files: makedefs, util/sys_defs.h.
+
+20031106
+
+	Feature: the sample greylist policy server is now case
+	insensitive.  File: examples/smtpd-policy/smtpd-policy.pl.
+
+20031103-20031110
+
+	Feature: preliminary defense against SMTP clients that
+	hammer the SMTP server with too many simultaneous or
+	successive connection attempts, with a whitelist capability
+	to disable the restriction for authorized clients.  Most
+	work is implemented by a new "anvil" server.  Parameters:
+	smtpd_client_connection_count_limit, smtpd_client_connection-
+	_rate_limit, smtpd_client_connection_limit_exceptions, and
+	client_connection_rate_time_unit.  Documentation:  smtpd(8),
+	anvil(8), sample-smtpd.cf. Files:  smtpd/smtpd.c,
+	global/anvil_clnt.[hc], anvil/anvil.c.  The anvil server
+	logs peak count and rate information per client when it
+	terminates after running out of work or after "postfix
+	reload".
+
+20031110
+
+	Cleanup: Postfix now supports the /0 netmask (match every
+	address).  This is useful as a catch-all pattern at the
+	end of a table.  Files:  util/dict_cidr.c, util/match_ops.c.
+
+	Cleanup: don't report that $queue_directory/etc/filename
+	differs from /etc/filename when /etc/filename does not
+	exist.  File: conf/postfix-script.
+
+20031112
+
+	Feature: client_connection_status_update_time parameter
+	controls periodic logging of maximal connection counts or
+	rates.  The default logging interval is 10 minutes.
+
+	Feature: "make makefiles WARN=stuff..." overrides the
+	built-in GCC warning options that are used when "make" is
+	invoked from within a source subdirectory. Files:  makedefs,
+	*/Makefile.in.
+
+20031125
+
+	Feature: qmgr logs "queueid: deleted", just like postsuper,
+	when it removes a message from the mail queue.
+
+	Performance: smtpd connects to the cleanup or proxy server
+	AFTER the first valid RCPT TO command, instead of after
+	the first valid MAIL FROM command. This avoid wasting
+	real-time proxy filter resources when mail is stopped by
+	the SMTP server's access blocks.  File: smtpd/smtpd.c.
+
+20031126
+
+	Bugfix: "panic: mymalloc: requested length 0" when master.cf
+	specified an invalid host name or address.  Postfix now
+	logs more specific information. File:  master/master_ent.c.
+	Reported by several people.
+
+20031125-20031201
+
+	Feature: XCLIENT support to override the SMTP server's
+	client information for logging and/or access control. This
+	replaces the short-lived XADDR and XLOGINFO extensions.
+	Remotely based on code by Victor Duchovni.  See FILTER_README
+	and SMTPD_PROXY_README for usage details. Files:
+	smtpd/{smtpd,smtpd_check,smtpd_proxy,smtpd_xclient}.c
+	smtp/smtp_smtp_proto.c, *qmgr/qmgr_message.c,
+	global/deliver_request.c.
+
+20031202
+
+	Cleanup: postfix-files now has support for files that are
+	no longer part of Postfix. When upgrading Postfix, the
+	post-install script gives the user a reminder. Files:
+	conf/postfix-files, conf/post-install.
+
+20031203
+
+	Support for SMTPD access map actions (FILTER, REDIRECT,
+	HOLD or DISCARD) that are delegated to the cleanup server,
+	but can trigger before the first valid recipient address
+	is accepted (and thus, before a cleanup server connection
+	is available).  Files:  smtpd/{smtpd,smtpd_state,smtpd_check}.c.
+
+20031204
+
+	Bugfix: conf/post-install didn't skip non-existent obsolete
+	files.  Victor Duchovni.
+
+	Minor cleanups of the xclient error messages; xclient
+	command lookup tables. File: smtpd/smtpd.c.
+
+20031206
+
+	Feature: reject_sender_login_mismatch allows multiple owners
+	of a sender address.  Code by Liviu Daia.  Files:
+	smtpd/smtpd_check.c and documentation.
+
+	reject_sender_login_mismatch is now implemented by elementary
+	features reject_unauthenticated_sender_login_mismatch
+	(reject if the client is not SASL logged in but the sender
+	address has an owner in smtpd_sender_login_maps) and
+	reject_authenticated_sender_login_mismatch (reject if the
+	client is SASL logged in but does not own the sender
+	address).  Code by Liviu Daia.  Files: smtpd/smtpd_check.c
+	and documentation.
+
+20031207
+
+	Bugfix: fallback_transport and mailbox_transport were broken
+	because the deliver_pass.c module was not updated for the
+	changed message delivery protocol.
+
+20031211
+
+	Safety: in dynamically growing data structures, update the
+	length info after (instead of before) updating the data
+	size. Files:  util/argv.c, util/inet_addrlist.c, util/intv.c,
+	util/mvect.c, util/vstring.c, global/recipient_list.c,
+	*qmgr/qmgr_rcpt_list.c.
+
+20031212
+
+	Cleanup: separate extensions XCLIENT (impersonate SMTP
+	client) and XFORWARD (down-stream logging of up-stream MTA
+	and/or message information, not necessarily SMTP related).
+	The protocol is extensible: the server advertises what
+	attributes XCLIENT or XFORWARD will accept, and it is an
+	error to send an unsupported attribute.  No xtext encoding
+	is used, since no attribute currently needs it.  See also:
+	XCLIENT_README and XFORWARD_README.
+
+20031214
+
+	Feature: XFORWARD support in the LMTP client.
+
+20031215
+
+	Safety: updated mail_queue_id_ok() for long fast flush
+	logfile names. File: global/mail_queue.c.
+
+	Robustness: save and restore the resolver _res.options
+	settings before and after DNS lookup, to avoid surprises
+	in third-party code. This may eliminate some "localhost
+	not found" problems. File: dns/dns_lookup.c.
+
+20031216
+
+	Cleanup:  easier to parse mailq output (no more space
+	between short queue ID and message status).  File:
+	showq/showq.c.
+
+20031216-21
+
+	Cleanup: the SMTP client now moves on to the next MX host
+	or fallback relay when delivery fails in the middle of an
+	SMTP session. This includes both broken connections and
+	4xx SMTP server replies.  Files:  smtp/smtp.c, smtp_rcpt.c,
+	smtp/smtp_connect.c, smtp_trouble.c.
+
+	Configuration parameters: smtp_mx_address_limit (limit the
+	list of IP addresses from MX lookup), and smtp_mx_session_limit
+	(limit the number of actual SMTP sessions per delivery
+	attempt, ignoring unusable MX IP addresses).
+
+	The new code centers around a mark-and-sweep algorithm
+	(replacing code that twiddled the rcpt->offset structure
+	member), with paranoid sanity checks to ensure that every
+	recipient is explicitly accounted for.
+
+20031217
+
+	Update: LDAP client logging (Liviu Daia) and LDAP client
+	documentation (Victor Duchovni). Files: util/dict_ldap.c,
+	conf/sample-ldap.cf, README_FILES/LDAP_README.
+
+20031222
+
+	Cleanup: shaved half the worst-case bits off the cleanup
+	duplicate address filter footprint. After discussion with
+	Victor Duchovni. File: cleanup/cleanup_out_recipient.c.
+
+	Safety: added "mail loops to myself" logic for destinations
+	that don't have an MX host.  File: smtp/smtp_addr.c.
+
+20031223
+
+	Workaround: turn off "mail loops to myself" for non-MX
+	destinations because it breaks SMTP-based content filters.
+	Fix is to turn off loop detection when a non-default TCP
+	port is specified.  File: smtp/smtp_addr.c.
+
+	Bugfix: restore errno after write failure in SIGCHLD handler.
+	Leandro Santi (who got the idea from Hernan Perez Masci).
+	File: master/master_sig.c.
+
+	Bugfix: the auto_clnt module disconnected too early, causing
+	unnecessary work by the anvil server.
+
+	Cleanup: eliminated binary hashes from anvil server. Anvil
+	client information is now stored on top of its VSTREAM.
+
+20031226
+
+	Feature: bounce_queue_lifetime parameter (default:
+	$maximal_queue_life_time) that bounds the time that
+	MAILER-DAEMON messages spend in the queue before they are
+	considered undeliverable.
+
+	Feature: disable "mail loops back to myself" protection
+	when SMTP mail is sent to a non-standard port. This makes
+	setting up content filters less painful.
+
+	Cleanup: disallow bare x.x.x.x numeric IP addresses in
+	email addresses. The form user@[x.x.x.x] is still allowed.
+
+	Cleanup: cleaned up the naming of internal symbols in the
+	SMTP client.
+
+20031231
+
+	Bugfix: stricter address syntax test broke "sendmail -bs".
+	File: smtpd/smtpd.c.
+
+20040101
+
+	Cleanup: the Postfix SMTP server rejects a MAIL FROM address
+	that matches a local, virtual or relay domain, while the
+	address is not listed in the corresponding local, virtual
+	or relay recipient table.
+
+	Feature: the reject_unlisted_sender(recipient) SMTPD access
+	restriction rejects an address that matches a local, virtual
+	or relay domain, while the address is not listed in the
+	corresponding local, virtual or relay recipient table.
+
+	Compatibility: the check_recipient_maps restriction works
+	like reject_unlisted_recipient, but will eventually be
+	removed from Postfix.
+
+20040102
+
+	Misc documentation cleanup by Loic Minier.
+
+20040104
+
+	Workaround: MacOSX dumps core on the 20030913 TZ censoring
+	code. We explictly set TZ=UTC, which will produce incorrect
+	results when "mailq" formatting is moved from the showq
+	daemon to the postqueue command.   File: msg_syslog.c.
+
+	Feature: after mail is requeued with "postsuper -r", the
+	pickup server logs the old queue ID together with the new
+	queue ID.  Victor Duchovni. File: pickup/pickup.c.
+
+	Feature: smtpd_sasl_application_name parameter (default:
+	smtpd) to control the name of the SASL configuration file
+	used by the Postfix SMTP server. Liviu Daia. Files:
+	mail_params.h, smtpd.c, smtpd_sasl_glue.c.
+
+	Cleanup: the LDAP client configuration parser is now shared
+	between the LDAP, MySQL, and PGSQL clients.  Liviu Daia.
+	Files: global/cfgparser.[hc], global/dict_ldap.c,
+	global/dict_mysql.c, global/dict_pgsql.c and documentation.
+
+	Cleanup: moved "util" modules with dependencies on higher-level
+	"global" code from the util directory to the global directory:
+	util/dict_open.c, global/cfgparser.[hc], global/dict_ldap.c,
+	global/dict_mysql.c, global/dict_pgsql.c, global/mail_dict.c.
+
+	Cleanup: the new queue manager nqmgr replaces the default
+	queue manager qmgr, leaving behind a hard link for backwards
+	compatibility. The old queue manager remains available as
+	as oqmgr but will eventually be removed.
+
+	Bugfix: vstring_get() etc. now return VSTREAM_EOF when they
+	terminate prematurely, instead of returning the last
+	character stored.  This avoids mis-leading warnings. File:
+	global/vstring_vstream.c.
+
+20040105
+
+	Cleanup: don't bother the flush daemon while deferring mail
+	if the destination is not "fast flush" eligible. File:
+	global/flush_clnt.c.
+
+	Safety: the SMTP server flushes recipients to the cleanup
+	server in order to avoid SMTP timeouts when virtual or
+	canonical expansions take a lot of time. File smtpd/smtpd.c.
+
+	Safety: add warnings to postmap and postalias when table
+	lookup results in an empty string.
+
+20040110
+
+	Example: script to run qmail-local from Postfix by Ron
+	Bickers.
+
+	Change: queue minfree limit is now 1.5 * message size limit.
+	File: smtpd/smtpd_check.c.
+
+	Bugfix: apply hostname restriction even when host address
+	lookup fails in check_{sender,recipient}_{ns,mx}_access.
+	File: smtpd/smtpd_check.c.
+
+20040115
+
+	Performance: allow delivery concurrency to increase even
+	while mail is deferred, as long as the delivery agent does
+	not report really serious trouble with the destination.
+	Files:  *qmgr/qmgr_deliver.c.
+
+	Cleanup: in postfix-files, symbolic links and hard links
+	are now first-class citizens with explicit mention of source
+	and destination pathnames. Files: postfix-install,
+	conf/postfix-files, conf/post-install.
+
+20040116
+
+	Cleanup: sendmail -v caused one mail delivery report upon
+	every delivery attempt, not just the first one. The fix is
+	to "kill" a queue file record after the first delivery
+	attempt. This means a new record type. Files:  *qmgr/qmgr_active.c,
+	*qmgr/qmgr_message.c, global/rec_type.c.
+
+	Cleanup: in anticipation of other built-in rate limiters,
+	the client_connection_rate_time_unit parameter is renamed
+	to client_rate_time_unit.
+
+	Documentation: finished the HOSTING_README file with an
+	overview of methods to host domains with Postfix.
+
+20040119
+
+	Bugfix: anvil (count and rate limiting) server race condition
+	could result in dangling pointer.  Postfix erases memory
+	after allocating and before freeing, so it is extremely
+	unlikely that this could be used to bring harmful data into
+	the anvil server. File anvil/anvil.c.
+
+20040120
+
+	Cleanup: new header_checks(5) and body_checks(5) manual
+	pages.  The sample-regexp* and sample-pcre* files are no
+	longer needed and have been removed, as are the default
+	*_table configuration files.
+
+	Cleanup: support for the non-standard Errors-To: header is
+	removed. File: cleanup/cleanup_message.c.
+
+20040121
+
+	Feature: "PREPEND headername: headervalue" action in Postfix
+	access maps, to facilitate external policy servers that
+	label mail instead of rejecting it. Files: smtpd/smtpd.c,
+	smtpd/smtpd_check.c.
+
+20040122
+
+	UNDO the 20040104 change (vstring_get() etc. return
+	VSTREAM_EOF when they terminate prematurely, instead of
+	returning the last character stored, to avoid mis-leading
+	warnings). File:  global/vstring_vstream.c.
+
+	Portability: test -e is not portable. File: conf/postfix-script.
+
+	Misc. documentation fixes by Victor Duchovni.
+
+	Documentation: the README files are now hyperlinked, and
+	are referenced in the on-line manual pages.
+
+	Bugfix: the pickup daemon now strokes the watchdog frequently
+	to prevent the watchdog from barking when mail arrives
+	faster than it can be picked up. File: pickup/pickup.c.
+
+20040123
+
+	Feature: set smtpd_reject_unlisted_{sender,recipient}=no
+	to turn off automatic rejection of non-existent local,
+	virtual or relay addresses. This way it can be made
+	conditional for local clients, always on for remote clients.
+	Files:  global/mail_params.h, smtpd/smtpd.c, smtpd/smtpd_check.c.
+
+20040124
+
+	Feature: PREPEND in header/body_checks, for message tagging.
+	File: cleanup/cleanup_message.c.
+
+20040126
+
+	Safety: handle the case that main.cf is updated while it
+	is being read. File: util/dict.c.
+
+	Feature: "instance" attribute that links policy etc. queries
+	to the same message instance.
+
+	Cleanup: the mynetworks setting may now be empty. File:
+	global/mail_params.c.
+
+20040127
+
+	Bugfix: missing flush_init() call. Introduced 20040105.
+	File: postqueue/postqueue.c.
+
+20040128
+
+	Cleanup: clnt_stream derived classes now try to detect that
+	the server has disconnected before sending data and warning
+	about an error. File: global/clnt_stream.c.
+
+20040202
+
+	Bugfix: changed mis-leading warning about text>4096 characters
+	into "unexpected end-of-input". File: util/attr_scan0.c.
+
+20040201
+
+	Feature: sasl_method, sasl_username and sasl_sender attributes
+	in smtpd policy queries. Files: src/smtpd/smtpd_check.c.
+
+20040204
+
+	Safety: smtpd_soft_error_limit now determines when
+	$smtpd_error_sleep_time starts to take effect.
+
+	Cleanup: local(8) and virtual(8) will now create maildirs
+	in a world-writable directory. Files: util/make_dirs.c.
+
+	Bugfix: don't panic on a corrupt queue file.  File:
+	*qmgr/qmgr_message.c.
+
+20040205
+
+	Cleanup: sample-filter.cf is gone. Better documentation is
+	available with "man header_checks".
+
+20040209
+
+	Bugfix: when delivery to smtpd_proxy_filter fails, report
+	"451 Queue file write error" instead of repeating the
+	previous "354 End data with <CR><LF>.<CR><LF>" response.
+	File:  smtpd/smtpd.c.
+
+20040220
+
+	Compatibility: accept and ignore the sendmail -bh and -bH
+	mode of operation requests.
+
+20040302
+
+	Bugfix: SMTPD proxy didn't send QUIT as the result of code
+	duplication. Evidence reported by Mark Martinec. File:
+	smtpd/smtpd.c.
+
+20040311
+
+	Bugfix: bad address syntax was passed to transport map
+	lookups.  Problem reported by Andrei Koulik. File:
+	util/match_ops.c, trivial-rewrite/resolve.c.
+
+20040324
+
+	Portability: ekkoBSD support by Philip Reynolds.  Files:
+	makedefs, util/sys_defs.h.
+
+20040325
+
+	Cleanup: smtp_skip_4xx_greeting and smtp_skip_5xx_greeting
+	functionality is moved from connection management to SMTP
+	protocol processing, so that Postfix now logs the server
+	response when a server refuses to provide service.  Files:
+	smtp/smtp_connect.c, smtp/smtp_proto.c.
+
+	Cleanup: smtp_skip_4xx_greeting is no longer configurable;
+	it is now permanently turned on.
+
+20040326
+
+	Workaround: in the trivial-rewrite server, turn on the code
+	to strip trailing "." while rewriting addresses, and change
+	the address resolver to strip trailing "." in a compatible
+	manner.  This does not eliminate the problem that the SMTP
+	server may use a different address for recipient validation
+	than what the cleanup server uses for virtual alias mapping.
+
+20040329
+
+	Bugfix: the SMTP server did not log client (and SASL)
+	information with the real-time content filter was enabled.
+	Files: smtpd/smtpd.c, smtpd/smtpd_sasl_proto.c.
+
+	Compatibility: smtpd_reject_unlisted_sender is turned off
+	by default, to avoid trouble with with in-house software
+	that sends out mail software with an unreplyable address.
+
+20040331
+
+	Bugfix: postdrop should not abandon mail submission after
+	receiving a SIGHUP signal when SIGHUP was ignored by the
+	parent process.  Victor Duchovni, Morgan Stanley.  File:
+	postdrop/postdrop.c.
+
+	Bugfix: parsing bug in PgSQL dictionaries causing UNIX
+	sockets to be ignored. Liviu Daia. Files: global/dict*sql.c.
+
+	Performance: allow MySQL and PgSQL database connections to
+	be closed when idle for more than 1 minute; Liviu Daia.
+	Files: global/dict*sql.c.
+
+20040401
+
+	Sanity: the SMTP server no longer accepts sender or recipient
+	addresses that end in the "@" null domain, as well as
+	addresses that rewrite into such a form.  Specify
+	"resolve_null_domain=yes" to get the old behavior back.
+	File:  trivial-rewrite/resolve.c.
+
+20040402
+
+	Cleanup: added WARN action support for access maps, for
+	consistency with the WARN action in header and body checks.
+	File:  smtpd/smtpd_check.c.
+
+20040407
+
+	Bugfix: missing return statement at the end of the
+	FREE_MEMORY_AND_RETURN error handling macro. Adi Prasaja.
+	File: trivial-rewrite/resolve.c.
+
+20040411
+
+	Future proofing: client_rate_time_unit is renamed to
+	anvil_rate_time_unit, so that it is no longer limited to
+	clients only. File: src/global/mail_params.h.
+
+	Cleanup: postalias and postmap now log problems to syslogd.
+	Files: postalias/postalias.c, postmap/postmap.c.
+
+20040413
+
+	Feature: "postfix set-permissions" (re)sets ownership and
+	access permissions of Postfix files and directories.
+
+	Feature: "postfix upgrade-configuration" updates main.cf
+	and master.cf. This is for people who people copy over
+	their old files after installing a newer Postfix version.
+
+	Feature: HTML files are now optionally installed under
+	control of the html_directory configuration parameter.
+	Files: postfix-install, conf/postfix-files, conf/post-install.
+
+	Cleanup: README file installation is now optional.  Files:
+	postfix-install, conf/postfix-files, conf/post-install.
+
+20040414
+
+	Cleanup: references to sample-mumble.cf files removed,
+	conf/mumble_table files removed, new commands added to
+	conf/postfix-script.
+
+	Cleanups: function declared int but used as void, missing
+	include file, missing const qualifier, unused variable.
+	Matthias Andree. Files:  bounce/bounce_notify_util.c,
+	bounce/bounce_service.h, postlog/postlog.c, smtpd/smtpd_check.c,
+	util/attr_scan64.c.
+
+	Bugfix: more robust version of SIGHUP test of 20040331.
+	Victor Duchovni, Morgan Stanley. File: postdrop/postdrop.c.
+
+	Safety: added NOCLOBBER qualifiers to local variables that
+	might be clobbered by longjmp(). Files: util/sys_defs.h,
+	smtp/smtp_proto.c, lmtp/lmtp_proto.c, smtpd/smtpd_check.c,
+	smtpstone/smtp-source.c.
+
+	Bugfix: sub-level Makefiles no longer turned on the extra
+	compiler warnings. Files: Makefile.in.*, makedefs.*.
+
+20040415
+
+	Bugfix: the LMTP client attempted to reuse a connection
+	after timeout, causing protocol synchronization errors.
+	Reported by Rob Mueller. File: lmtp/lmtp.c.
+
+20040416
+
+	Cleanup: non-delivery reports now include the original
+	recipient information. File: bounce/bounce_notify_util.c.
+
+20040415-18
+
+	Typos: many documentation fixes by Rob Foehl.
+
+20040418
+
+	Cleanup: "int" versus "const int" prototype mismatch between
+	the DICT sequence method prototype and possible implementations.
+	Files: util/dict_db.c, util/dict_dbm.c.
+
+20040419
+
+	Bugfix: the code that rejects client/helo RESTRICTIONS with
+	smtpd_delay_reject=no looked at the wrong evidence and
+	rejected client/helo ACCESS MAP lookups instead. Michael
+	Tokarev. Files:  smtpd/smtpd.c, smtpd/smtpd_check.c.
+
+	Bugfix: missing # in master.cf in optional submission
+	service.
+
+20040420
+
+	Bugfix: smtpd logged the client too often. Michael Tokarev.
+	File: smtpd/smtpd.c.
+
+	Cleanup: client_event_status_update_time renamed to
+	anvil_status_update_time. Files: mantools/postlink,
+	proto/postconf.proto, anvil/anvil.c.
+
+20040421
+
+	Workaround: allow pipelined SMTP clients to overshoot the
+	SMTP server recipient limit without triggering the server
+	hard error limit.  The SMTP server does not count "too many
+	recipients" towards the hard error limit, as long as the
+	number of excess recipients stays within a configurable
+	overshoot limit (default: smtpd_recipient_overshoot_limit
+	= 1000).  Solution in cooperation with Victor Duchovni.
+	Files:  smtpd/smtpd.c, smtpd/smtpd_state.c, smtpd/smtpd.h.
+
+20040502
+
+	Missing test for a never used flag (the problematic and
+	thus never completed INSPECT feature that doesn't re-inject
+	mail into Postfix).  Victor Duchovni, Morgan Stanley. File:
+	virtual/virtual.c.
+
+20040503
+
+	Bugfix: missing "sasl enabled" guard in the SMTPD policy
+	client.  File: smtpd/smtpd_check.c.
+
+20040606
+
+	Portability. UnixWare has strcasecmp() in strings.h.  Patch
+	by Andreas Winkelmann. File: util/sys_defs.h.
+
+	Portability. The postlink script is transformed from sed(1)
+	to perl(1).
+
+20040608
+
+	Portability. Introduced SET_H_ERRNO() macro for compilation
+	environments where h_errno can't be used as an lvalue.
+	Files:  util/sys_defs.h, dns/dns_lookup.c.
+
+	Portability. Eliminate assumption on bits per byte from
+	vbuf_print.c.
+
+20040614
+
+	Bugfix: the SMTP client did not reset per-session EHLO,
+	SASL, and history information when opening a connection to
+	an alternate SMTP server.  This is the result of abstraction
+	no longer matching function. Reported and diagnosed by
+	Victor Duchovni, Morgan Stanley.
+
+	Bugfix: non-portable reuse of variadic argument lists.
+	Fix by Victor Duchovni, Morgan Stanley. Files:  global/bounce.c,
+	global/defer.c, global/sent.c, global/trace.c, global/verify.c.
+
+	Portability: NetBSD 2.0 has changed from statfs to statvfs.
+	John Heasley. File: util/sys_defs.h.
+
+	Documentation: typo fixes by IKEDA Nozomu.
+
+20040616
+
+	Bugfix: one missed variadic argument list fix. Victor
+	Duchovni, Morgan Stanley. File: global/verify.c.
+
+	Bugfix: the resolver client cache should be context dependent
+	because address verification probes may use a different
+	route than normal mail deliveries. File: global/resolve_clnt.c.
+
+	Safety: added similar context dependence to the address
+	rewriting client in order to avoid trouble when Postfix is
+	changed. File: global/rewrite_clnt.c.
+
+	Bugfix: space in HELO commands could end up in XFORWARD
+	commands.  File: smtpd/smtpd.c.
+
+20040619
+
+	Code reorganization: in preparation for SMTP session caching,
+	the SMTP client data structures were changed from the
+	original "one session per delivery request" model to an
+	explicit "multiple sessions per delivery request" model.
+	This uncovered ESMTP and SASL missing re-initialization
+	problems that were fixed in past week.  Design by Victor
+	and Wietse, initial implementation by Victor Duchovni.
+
+20040620
+
+	Future proofing: after the reorganization of SMTP request
+	state and session state, added code to the smtp client
+	error handling routines to more consistently deal with the
+	possibility that session information is not available.
+
+20040621
+
+	Feature: directory=pathname option for the pipe(8) delivery
+	agent. This allows a command to run from a fixed directory.
+	Failure to change directory causes delivery to be deferred.
+	Files: pipe/pipe.c.
+
+	Feature: command_execution_directory for local(8) delivery
+	to external command. This supports the usual $home etc.
+	expansions, subject to filtering with the character set
+	specified with $execution_directory_expansion_filter.
+	Failure to change directory causes delivery to be deferred.
+	Files:  global/mail_params.h, local/command.c.
+
+	Support for external command execution directory. Files:
+	global/pipe_command.[hc].
+
+20040622
+
+	Safety: when mail is delivered to a transport with per-delivery
+	recipient limit of 1, split the recipient address on the
+	recipient delimiter if one is defined, so that extended
+	addresses don't get extra delivery concurrency slots.
+	Files: *qmgr/qmgr_message.c.
+
+20040623
+
+	Workaround for fragile clients: add microsecond time to
+	maildir filename.  Files: virtual/maildir.c, local/maildir.c.
+
+20040628-20040701
+
+	SMTP connection caching work with Victor Duchovni.
+
+	New module (later renamed to global/scache_single.c) for
+	protocol-independent session caching.  The initial
+	implementation supports in-process, single-session caching
+	only.  A later version will support a central session cache
+	daemon.  Some more work is needed for passivation/activation
+	of session attributes.
+
+	New function vstream_fdclose() to destroy a VSTREAM while
+	leaving the underlying file(s) open. Files: util/vstream.[hc].
+
+	New function dns_rr_remove() to remove one record from a
+	resource record list. Some more work is needed to turn the
+	list into a doubly-linked one. Files: dns/dns.h, dns/dns_rr.c.
+
+	Restructuring of the SMTP protocol engine for session
+	caching. File: smtp/smtp_proto.c.
+
+	Restructuring of the connection management module, and
+	first implementation of SMTP connection caching.  To enable,
+	specify an smtp_connection_cache_time value greater than
+	zero. The time unit is seconds. File: smtp/smtp_connect.c.
+
+	New code to passivate and re-activate SMTP_SESSION objects,
+	and isolation of session save/lookup in its own module.
+	Files: smtp/smtp_session.c, smtp/smtp_reuse.c.
+
+	Refinement: smtp_cache_reuse_limit parameter to bound the
+	number of times a session may be reused.  
+
+	Refinements: when a session comes from the cache, give it
+	back to the cache anyway (even when it will not be listed
+	under the next-hop destination name).
+
+	Future refinements should also include a bound on the number
+	of consecutive and total non-delivering uses and other
+	statistics.
+
+20040714
+
+	Bugfix: the code to eliminate the local MTA from the MX
+	address list did not handle the case that inet_interfaces
+	produced a less preferred match than proxy_interfaces.
+	Victor Duchovni, Morgan Stanley. File: smtp/smtp_addr.c.
+
+20040715
+
+	Resume work on SMTP session caching.  All good sessions
+	are now cached under their IP address. As before, only the
+	first good session per delivery request is cached under
+	the original next-hop destination.
+
+	At this point, SMTP session caching works, with a session
+	cache client module that uses in-process session caching.
+	This is sufficient to demonstrate that the SMTP client is
+	ready for session caching.
+
+20040716
+
+	New modules to send file descriptors from one process into
+	another one. This will be needed for implementing a central
+	connection cache manager daemon. Most systems use UNIX-domain
+	sockets as the transport for this. On Solaris we use streams
+	instead.  Applications are supposed to invoke LOCAL_SEND_FD()
+	and LOCAL_RECV_FD().  Files: {unix,streams}_{send,recv}_fd.c.
+
+20040717
+
+	First implementation of a session caching client API that
+	actually sends to/receives from a caching server process.
+	The old in-process, single-session caching functionality
+	is preserved as global/scache_single.c, so that we can use
+	it for bootstrapping the session cache server. File:
+	global/scache_clnt.c.
+
+	First implementation of the scache session cache server,
+	using the same in-process session caching code that was
+	used to bootstrap the SMTP client.  File: scache/scache.c.
+
+20040718
+
+	Performance: the default RSET timeouts are reduced from
+	120s to 20s.  Perhaps there should be different RSET timeout
+	for address probes and for session cache checks. File:
+	global/mail_params.h.
+
+20040719
+
+	Multi-session connection cache module. Implementing this
+	was actually the easiest part of the entire connection
+	caching project. File: global/scache_multi.c.
+
+20040720
+
+	Bugfix: event_drain() falsely reported a single-entry timer
+	queue as empty.  File: util/events.c.
+
+	Completed the multi-session cache support for SMTP. The
+	code can be stress tested with a driver program that reads
+	commands from a script. It is not practical to manually
+	test the effects of collisions in the time or in name space
+	domains. File:  global/scache.c.
+
+20040721
+
+	Feature: the session cache server now logs cache hit and
+	miss statistics every $session_cache_status_update_time
+	seconds (default: 600s), as well as upon process exit.
+	File:  scache/scache.c.
+
+20040722
+
+	Workaround: LINUX 2.4 has trouble with mixed data and file
+	descriptor traffic on UNIX-domain stream sockets.
+	Specifically, it cannot handle data write (read) followed
+	by file descriptor send (receive): the receiver hangs in
+	recvmsg(). Workaround is to insert an intervening read
+	(write) operation.  Presumably, LINUX 2.4 is confusing the
+	data and file descriptor.  Lucky Ralf Hildebrandt.  Files:
+	util/sys_defs.h, global/scache_clnt.c, scache/scache.c.
+
+20040723
+
+	Safety: spawn(8) now rejects a user with the -1 UID or GID
+	value, so that commands will not end up running as root.
+	Files:  util/spawn_command.c, spawn/spawn.c.
+
+	User interface: parameter smtp_connection_cache_domains
+	renamed to smtp_connection_cache_destinations. Destinations
+	listed here must be specified without [] or :port.  File:
+	smtp/smtp_connect.c.
+
+	Bugfix: "421 Timeout exceeded" wasn't guarded by setjmp().
+	Victor Duchovni, Morgan Stanley. File: smtpd/smtpd.c.
+
+20040729
+
+	Feature:  enable SMTP session caching temporarily while a
+	postfix is able to schedule back-to-back deliveries.
+	Parameter:  smtp_connection_cache_on_demand (default:
+	yes).  Files:  smtp/smtp_connect.c, *qmgr/qmgr_entry.c,
+	*qmgr/qmgr_queue.c, *qmgr/qmgr_deliver.c.
+
+	Feature: smtp-source -N option to generate unique recipient
+	addresses for (trivial-rewrite) stress testing. Victor
+	Duchovni, Morgan Stanley. File: smtpstone/smtp-source.c.
+
+20040730
+
+	Safety: disallow "opportunistic session caching" when the
+	queue manager is unable to schedule back-to-back deliveries.
+	File: *qmgr/qmgr_entry.c.
+
+20040731
+
+	Hysteresis: turn on "opportunistic session caching" when
+	back-to-back deliveries happen, but don't turn if off
+	until both concurrent and back-to-back delivery ends.
+
+20040801
+
+	Workaround: disable session caching for Linux < 2.2 (does
+	not work) or Glibc < 2 (does not compile).  Files:
+	util/sys_defs.h, util/unix_{recv,send}_fd.c.
+
+	Portability: h_errno is not an lvalue in the UnixWare 7.1
+	multi-threaded environment. Olivier PRENANT.
+
+20040812
+
+	Bugfix: update SMTP server error counter when a client is
+	denied access with smtpd_delay_reject=no.
+
+20040816
+
+	Bugfix: The smtp_chat_cmd() forced output flushing code in
+	the SMTP client could run before an I/O error handler was
+	set up.  Problem diagnosed by Victor Duchovni, Morgan
+	Stanley. The fix is to disable the smtp_chat_cmd() forced
+	output flushing code as it duplicates better code in
+	smtp_loop(). File: smtp/smtp_chat.c.
+
+	Safety: set up an I/O error handler before the smtp_loop()
+	protocol engine starts; this handler logs a warning in case
+	it ever runs, because that means someone broke ESMTP command
+	pipelining.  File: smtp/smtp_proto.c.
+
+	Feature: canonical_classes parameter by Kimmo Suominen, to
+	control what addresses are rewritten by canonical_maps.
+	Files: cleanup/cleanup_addr.c, cleanup/cleanup_message.c.
+
+20040817
+
+	Bugfix: update the vstream I/O time AFTER the completion
+	of an I/O request, so that time-sensitive applications
+	don't force flush output too soon and possibly trigger
+	NAGLE delays.  Problem diagnosed by Victor Duchovni, Morgan
+	Stanley. File: util/vstream.c.
+
+	Portability: avoid postmap/postalias test file name clashes
+	on Windows.  Ian Lance Taylor (of Taylor UUCP fame).
+
+20040823
+
+	Bugfix: vstream_popen() did not close the child pipe
+	after failure to fork(). File: util/vstream_popen.c.
+
+20040826
+
+	Feature: support for systems with closefrom(), and emulation
+	for those without. Andrew Brown. Files:  util/sys_defs.h,
+	util/sys_compat.c.
+
+20040827
+
+	Feature: {sender,recipient}_canonical_classes parameters,
+	which give better control than sender_canonical_classes.
+	Files: cleanup/cleanup_addr.c, cleanup/cleanup_message.c.
+
+	Feature: the proxymap client now recognizes when a map
+	can't be proxied, and will open it directly instead.  This
+	makes proxy maps easier to use for virtual mailbox domains.
+	File: global/dict_proxy.c.
+
+	Feature: smtp_sasl_mechanism_filter restricts what remote
+	SMTP server mechanism names the Postfix SMTP client passes
+	on to the SASL library.  Victor Duchovni, Morgan Stanley.
+	Files: smtp/smtp.c.  smtp/smtp_sasl_glue.c, smtp/smtp_sasl_proto.c.
+
+20040828
+
+	User interface: when no recipients are specified, the
+	Postfix sendmail command now terminates with status EX_USAGE
+	instead of accepting the mail first and bouncing it later.
+	This gives more direct feedback in case of a common client
+	configuration error. File:  sendmail/sendmail.c.
+
+20040829
+
+	Portability: Solaris closefrom() support didn't work for
+	non-SUN compilers. Victor Duchovni, Morgan Stanley.
+
+20040830
+
+	Feature: the scache(8) session cache manager now logs the
+	peak counts of destinations, endpoints and sessions. Files:
+	scache/scache.c, global/scache*c.
+
+20040831
+
+	Portability: disable session caching support on SCO 5
+	because of incompatible sockets API. File: util/sys_defs.h.
+
+20040913
+
+	Bugfix (introduced 20020803): sent the wrong bounce message
+	type when a Delivered-To: loop was detected for a mailing
+	list alias.  Nicolas Riendeau. File: bounce_notify_util.c.
+
+20040918
+
+	Feature: authorized_flush_users, authorized_mailq_users,
+	authorized_submit_users to restrict what users can flush
+	the queue, list the queue, or submit mail locally.  Based
+	on code by Victor Duchovni, Morgan Stanley. Files:
+	sendmail/sendmail.c, postdrop/postdrop.c, postqueue/postqueue.c,
+	global/user_acl.[hc].
+
+	Feature: discard(8) mail delivery agent.  Victor Duchovni,
+	Morgan Stanley. File: discard/discard.c.
+
+20041002
+
+	Long overdue, a master(5) manual page based on an initial
+	version by Magnus Baeck.
+
+	By popular demand, a postfix-manuals.html web page with
+	totally useless links to UNIX-style manual pages (the same
+	information should already be available simply by typing
+	"apropos postfix"). To keep newbies from getting completely
+	lost due to information overload, the document starts with
+	a list of actually useful pointers to Postfix introductions,
+	duplicated from the already existing documents.html.
+
+20041006
+
+	Bugfix: "sendmail -bv" did not reject the -t option.  File:
+	sendmail/sendmail.c.
+
+20041007
+
+	Feature: SASL authentication attributes are now stored in
+	queue files and passed on to delivery agents, by Leandro
+	Santi. Files:  deliver_pass.c, deliver_request.c,
+	qmgr_deliver.c, qmgr_message.c, pipe.c, smtpd.c.
+
+20041009
+
+	Feature: per SMTP client message rate limit and recipient
+	rate limit, by Ragnar Lonn, GHN network technologies.
+	Files: smtpd/smtpd.c, anvil/anvil.c, global/anvil_clnt.[hc].
+
+	Incompatibility: smtpd_client_connection_limit_exceptions
+	renamed to smtpd_client_event_limit_exceptions, because it
+	now also controls message and recipient rate limit control.
+
+20041013
+
+	Portability: AIX 5.1/GCC.
+
+20041014-23
+
+	Postfix no longer appends the local domain to header
+	addresses from remote clients.  Instead, Postfix either
+	does not rewrite those headers at all, or it appends the
+	domain specified with the new remote_header_rewrite_domain
+	parameter.
+
+	Postfix still appends $@myorigin or .$mydomain to headers
+	from the Postfix sendmail command, or from clients listed
+	with the new local_header_rewrite_clients parameter (default:
+	permit_mynetworks, permit_sasl_authenticated).
+
+	These changes affect the SMTP server (including XFORWARD
+	support), the cleanup server (do or don't rewrite headers),
+	the trivial-rewrite server (append local domain or surrogate
+	remote domain to incomplete addresses), the queue manager
+	(send additional attributes to delivery agents), the LMTP
+	and SMTP clients (XFORWARD support), and the local delivery
+	agent (preserve XFORWARD attributes when forwarding mail).
+
+20041016
+
+	Bugfix: attr_clnt_request() did not properly skip hash
+	table arguments. Luc Pardon, Skopos Consulting. File:
+	util/attr_clnt.c.
+
+20041018
+
+	The NIS+ module by Geoff Gibbs is now part of Postfix.
+	Files: util/dict_nisplus.c, proto/nisplus_table.
+
+20041019
+
+	Support for Errors-To: is permanently removed.
+
+20041022
+
+	Bugfix: "smtp_connection_cache_on_demand=no" could crash
+	the SMTP client. File: smtp/smtp_connect.c.
+
+	Robustness: extra sanity checks. Files: util/dict_db.c,
+	util/dict_dbm.c, dict_nis.c.
+
+20041025
+
+	Initial merge of Lutz Jaenicke's TLS patch. Initial rewrite
+	of tlsmgr to eliminate some code duplication and to postpone
+	calls into OpenSSL until after dropping privileges.
+
+20041030
+
+	Compatibility: "session cache" renamed to "connection cache"
+	to avoid confusion with the TLS session cache.
+
+20041102
+
+	Feature: smtpd_end_of_data_restrictions allow you to specify
+	restrictions at the end of the SMTP DATA command. The syntax
+	is identical to that of the smtpd_data_restrictions feature.
+	This introduces a new END-OF-DATA protocol state for the
+	external policy server. Files:  proto/SMTPD_POLICY_README.html,
+	proto/SMTPD_ACCESS_README.html, smtpd/smtpd_check.c.
+
+20041111
+
+	Cleanup: terminate the dict_eval() result buffer for verbose
+	logging.  Victor Duchovni, Morgan Stanley. File: util/dict.c.
+
+20041112
+
+	Cleanup: be more careful when saving and restoring resolver(3)
+	options to avoid problems with an HP-UX security patch
+	(change introduced 20031215). File:  dns/dns_lookup.c.
+
+20041115
+
+	Bugfix: the test for "no debugger_command" was wrong.
+	Leandro Santi. File: global/debugger_command.c.
+
+20041117
+
+	Robustness: the master-child protocol now includes a process
+	generation number besides the child process ID.  The process
+	generation number is incremented by one each time the master
+	creates a child process. Child-to-master status updates
+	with the wrong generation number are ignored, instead of
+	triggering a consistency error in the master server.  Files:
+	master/*server.c, master/master_status.c, master/master_spawn.c.
+
+20041118
+
+	Bugfix: the "local_header_rewrite_clients" feature (20041023)
+	did not recognize "bare" lookup tables as documented.  Victor
+	Duchovni, Morgan Stanley. File: smtpd/smtpd_check.c.
+
+	Bugfix: the "local_header_rewrite_clients" feature (20041023)
+	was broken because the local delivery agent passed on a
+	bogus attribute value when forwarding internally generated
+	mail, causing the mail to be rejected by the cleanup server.
+	File: local/dotforward.c.
+
+	Bugfix: the "local_header_rewrite_clients" feature (20041023)
+	was broken because the pickup server always overwrote origin
+	information. Files: pickup/pickup.c, cleanup/cleanup_state.c,
+	*qmgr/qmgr_message.c.
+
+	Workaround: enable the "can't write before sending a file
+	descriptor" workaround for Solaris. Problem reported by
+	Victor Duchovni for Solaris 2.5.1, but we play safe and
+	enable it unconditionally.
+
+20041120
+
+	The TLS support routines are moved to a "tls" directory,
+	and are published via the "libtls.a" object library.
+
+20041122
+
+	Infrastructure: support for binary attribute values
+	(ATTR_TYPE_DATA) in Postfix IPC messages. Files:
+	util/attr_scan*c, util/attr_print*c.
+
+20041123-20041205
+
+	TLS support: via a process of gradual transformation,
+	decomposed Lutz Jaenicke's pfixtls.c into separate modules
+	for clients, servers, certificate verification, session
+	caching, and PRNG management. Global variables were eliminated
+	so that the code now supports multiple client and/or server
+	contexts in the same process.  Files:  tls/*.[hc].
+
+20041205
+
+	TLS support: eliminated shared access (and locking) of the
+	TLS PRNG exchange file and TLS session caches. Instead,
+	Postfix uses a client-server protocol, and the tlsmgr
+	becomes the sole mediator. This eliminated the need for
+	1000+ lines of SDBM support, and eliminated the need for
+	running a persistent tlsmgr process on systems don't enable
+	TLS in main.cf.
+
+20041124
+
+	Feature: configurable list of forbidden SMTP commands
+	(default: smtpd_forbidden_commands = CONNECT, GET, POST)
+	after which the Postfix SMTP server disconnects immediately.
+	The SMTP server always disconnects immediately when the
+	client sends a message header instead of an SMTP command.
+	Magnus Baeck.  File: smtpd/smtpd.c.
+
+20041207
+
+	CDB support by Michael Tokarev, documentation by Victor
+	Duchovni. Files: util/dict_cdb.[hc], global/mkmap_cdb.c.
+
+20041209
+
+	Completed support for the Berkeley DB sequence operator.
+	This is needed for finding and deleting old entries in TLS
+	session databases. File:  util/dict_db.c.
+
+	Bugfix: the DBM client's sequence operator used exclusive
+	locking instead of shared locking. File: util/dict_dbm.c.
+
+	Feature: dump an entire database with the new postmap/postalias
+	"-s" option. This works only for database types with Postfix
+	sequence operator support: hash, btree, dbm, and sdbm.
+	Files:  postmap/postmap.c, postalias/postalias.c.
+
+20041212
+
+	Solaris 10/ix86 chroot setup script update by J.D. Bronson.
+
+	TLS support: cosmetic changes to comments and messages;
+	completed the code for the master -> tlsmgr trigger handshake,
+	so that the master no longer complains about trigger
+	responses timing out.
+
+20041213
+
+	Updated the SDBM dictionary interface. It had fallen behind
+	with the Postfix dictionary interfaces that were already
+	bundled with Postfix. Files: util/dict_sdbm.[hc].
+
+	Cleanup: "postconf -m" (show all available map types) now
+	produces sorted output.  File: util/dict_open.c.
+
+20041215
+
+	No bugfix: tests with the new "postmap -s" feature show
+	that SDBM first/next operations never worked with Postfix/TLS
+	patch 20040829 (verified with the 20040829 dict_sdbm.c
+	module on Linux and FreeBSD).  The code stops after finding
+	one database element.  Other SDBM versions found on the
+	Internet will find all database entries, but report an I/O
+	error after the last database element is found. All this
+	would be easy enough to fix, but the SDBM library is not
+	part of Postfix, and never will be.
+
+	Bugfix: the sequence operator in the DBM and SDBM clients
+	released the shared lock after reading the next key but
+	before reading the corresponding value. This was never a
+	problem, because the sequence operator was used only in
+	the Postfix/TLS patch. This used the SDBM sequence operator
+	which didn't work as discussed above. Files:  util/dict_dbm.c,
+	util/dict_sdbm.c.
+
+	Feature: the local(8) and pipe(8) delivery agents now make
+	the following attributes available upon delivery (with
+	local(8) names must be spelled in upper case): client_hostname,
+	client_address, client_protocol, client_helo, sasl_method,
+	sasl_sender, sasl_username. Files: local/command.c,
+	pipe/pipe.c, and lots of documentation.
+
+20041216
+
+	"postcat -o" now prints queue file record offsets; this is
+	useful for debugging. File: postcat/postcat.c.
+
+	NON-PRODUCTION Bugfix: (bug introduced while adopting the
+	Postfix/TLS patch):  the new TLS certification call-back
+	routine expects that the peer hostname is in
+	tlscontext->peername_save, but the TLS server code never
+	updated this field.  File:  tls/tls_server.c.
+
+20041218
+
+	Feature: selective suppression of SMTP extensions (pipelining,
+	starttls, auth, etc.); this is useful to work around broken
+	clients or servers.  Specify a list of EHLO keywords with
+	the smtp(d)_discard_ehlo_keywords parameters, or specify
+	one or more lookup tables, indexed by remote network address,
+	with the smtp(d)_discard_ehlo_keyword_address_maps parameters.
+	EHLO keyword lists are case insensitive.  Files:
+	util/name_mask.[hc], global/ehlo_mask.[hc], smtpd/smtpd.c,
+	smtp/smtp.c, smtp/smtp_proto.c.
+
+20041219
+
+	Bugfix: postcat without -o was broken. File: postcat/postcat.c.
+
+20041220
+
+	NON-PRODUCTION Bugfix: (bug introduced while adopting
+	Postfix/TLS patch):  don't call smtp_flush() after return
+	from vstream_setjmp(), we'll call you.  File: smtpd/smtpd.c.
+
+	Dummy VSTREAM read-write routines. Files: util/dummy_read.c,
+	util/dummy_write.c.
+
+20041221
+
+	Fixes for TLS_README by Victor Duchovni. File:
+	proto/TLS_README.html.
+
+	NON-PRODUCTION Bugfix: (bug introduced while adopting
+	Postfix/TLS patch).  The client code had become too similar
+	to the server implementation, and also required a host
+	certificate and key. Fix by Victor Duchovni. File:
+	tls/tls_client.c.
+
+20041221
+
+	Bugfix: further postcat corner cases.
+
+20041223
+
+	Cosmetic: don't log disconnect events as I/O errors.
+	File: tls/tls_bio_ops.c.
+
+20041221-9
+
+	Infrastructure: unified IPv4/IPv6 name/address API so that
+	Postfix can support IPv6 without #ifdef INET6 everywhere.
+	In particular, we allow #ifdef in libraries but avoid it
+	in applications.  Files:  util/myaddrinfo.[hc],
+	util/sock_addr.[hc], dns/dns_rr_to_pa.c, dns/dns_sa_to_rr.c,
+	dns/dns_rr_eq_sa.c, dns/dns_rr_to_sa.c, inet_proto.[hc].
+
+	Postfix no longer attempts to deliver mail via IPv6 when
+	the system has no IPv6 connectivity.  Network protocol
+	support is now selected with the "inet_protocols" configuration
+	parameter, instead of "inet_interfaces". The "inet_protocols"
+	parameter also controls what DNS lookups Postfix will do.
+
+	Infrastructure: eliminated two host/port parsing routines.
+	Only one survives: host_port(), in an extended form that
+	allows for missing host or missing service information but
+	not both. File: util/host_port.c.
+
+20041229
+
+	Milestone: Postfix with the unified IPv4/IPv6 socket/name
+	API builds without compiler error on IPv4-only system and
+	actually works.
+
+20041228
+
+	Bugfix: SMTPD_PROXY_README incorrectly claimed that ":port"
+	in master.cf causes a server to listen only on "localhost"
+	without exposing the service to the network.  Instead,
+	":port" causes a client to connect to "localhost".
+
+20041231
+
+	Linux workaround:  when mynetworks isn't set, a chrooted
+	process could not read the IPv6 address information from
+	/proc.  We now invoke own_inet_addr() before chrooting,
+	while processing main.cf. File: global/mail_params.c.
+
+20050101
+
+	Workaround for (Linux) systems without IPV6_V6ONLY support
+	(RFC 3493).  When Postfix listened on an IPv4 wild-card
+	smtp socket, the IPv6 wild-card smtp listener would fail
+	with EADDRINUSE (and vice versa).  File: util/myaddrinfo.c.
+
+20050103
+
+	Safety: when the IPV6 netmask can't be determined, assume
+	/128 (host only). File: util/inet_addr_local.c.
+
+20050104
+
+	Re-implemented IPv6 support for net/mask pattern matching.
+	Files:  util/cidr_match.[hc], util/dict_cidr.c,
+	util/match_ops.[hc], proto/cidr_table.
+
+20050105
+
+	Moved mask_addr() to its own module so that it could also
+	be called by mynetworks() and inet_addr_local() to remove
+	non-zero host bits from IPv6 network/mask patterns. File:
+	util/mask_addr.c.
+
+20050108
+
+	Re-implemented IPv6 support for network interface lookup
+	via the Linux /proc file system. File:  util/inet_addr_local.c.
+
+20050111
+
+	Feature: specify "inet_interfaces = loopback-only" for
+	servers that must listen on local interfaces only, without
+	having to specify IPv4 and/or IPv6 addresses in main.cf or
+	master.cf.  File:  global/own_inet_addr.c.
+
+	Workaround: AIX 5.1 getaddrinfo() can't handle a null host
+	argument with AI_PASSIVE. Instead we specify an explicit
+	protocol family, a host of "::" or "0.0.0.0", and turn off
+	IPV6_V6ONLY. Files: util_myaddrinfo.c, util/inet_listen.c.
+
+	Workaround: AIX 5.1 getaddrinfo() can't handle a "0" service
+	argument. Instead we specify "1".  Files: util/inet_addr_host.c.
+
+20050113
+
+	Cleanup: now that the over-all structure is proving itself,
+	clean up some internal APIs to increase robustness and get
+	rid of some clumsiness. Mainly, the getaddrinfo(3) interface.
+
+	Start-up performance: the hash_queue_names default setting
+	is reduced from eight directories to just defer and deferred.
+	This reduces time for checking the Postfix queue. Files:
+	conf/post-install, global/mail_params.h.
+
+20050114
+
+	Further cleanup: eliminate duplicate IPv6 results when the
+	mynetworks value is generated by Postfix. More documentation
+	of the new internal APIs.
+
+	Performance: reduced start-up delay by moving warning-only
+	startup checks into the background. File: conf/postfix-script.
+
+20050115
+
+	Further hardening of the IPv6 support: don't trust system
+	libraries to protect Postfix against malformed IPv6 address
+	literals. Their syntax is complex enough that errors are
+	likely. Files: global/resolve_local.c, util/valid_hostname.c.
+
+	Further cleanup: RFC 2821 requires the IPv6: prefix with
+	IPv6 address strings.  The smtp and qmqp servers maintain
+	separate address instances, the bare address and the RFC
+	2821 compatible form, and use each where appropriate.  This
+	strict separation simplifies address syntax checks as well
+	as the implementation of XCLIENT and XFORWARD.
+
+20050116
+
+	Infrastructure: new valid_mailhost_addr() routine to verify
+	that an address literal satisfies RFC 2821. An IPv4 address
+	is in dotted-quad decimal form, and an IPv6 address is in
+	hexadecimal form, with the "IPv6:" prefix. Files:
+	global/valid_mailhost_addr.[hc].
+
+	Further cleanup: valid_hostname() no longer allows network
+	addresses or numerical domain names. While it made some
+	sense with IPv4 dotted quad decimal forms, with IPv6 it
+	just made no sense anymore.  Again, being stricter actually
+	simplifies code. Files:  util/valid_hostname.c and a
+	surprisingly small number of valid_hostname() callers that
+	did not reject numerical forms.
+
+	Bugfix: in the Postfix 2.2 SMTP client, the debug_peer_init()
+	call was moved to the after-chroot initialization.
+
+20050117
+
+	Performance: reduced start-up delay by moving warning-only
+	startup checks into the background; they now start after
+	one minute to allow the system to finish booting. File:
+	conf/postfix-script.
+
+	Milestone: first non-non-production snapshot with IPv6.
+
+20050119
+
+	Milestone: first non-non-production snapshot with TLS.
+
+20050124
+
+	Workaround: don't send mail to $fallback_relay if Postfix
+	is MX host for the next-hop destination. This is, however,
+	a partial solution. The documentation has been updated to
+	cover all the cases where a fallback_relay could interfere
+	with the operation of a backup or primary MX host. Files:
+	smtp/smtp_addr.c, smtp/smtp_connect.c.
+
+20050127
+
+	Configuration: Postfix daemons that need privileged operation
+	(such as local, pipe, or spawn) now log a fatal error when
+	they are configured in master.cf as unprivileged.
+
+20050130
+
+	Cleanup: simplified the handling of receive_override_options
+	settings. Files: pickup/pickup.c, smtpd/smtpd.c, qmqpd/qmqpd.c,
+	global/input_transp.c.
+
+	Feature: permit_inet_interfaces allows a request when the
+	client matches $inet_interfaces. This is used for generic
+	access restrictions and for header address rewriting control.
+	Files: global/mail_params.h, smtpd/smtpd_check.c.
+
+	Cleanup: by default, message header address rewriting is
+	now enabled only for mail that originates from the machine
+	itself. Files: global/mail_params.h, smtpd/smtpd_check.c.
+
+20050131
+
+	Bugfix: when extracting recipients from message headers,
+	the Postfix sendmail command produced output records longer
+	than $line_length_limit, causing postdrop to reject the
+	mail. Diagnosis by Victor Duchovni. File:  sendmail/sendmail.c.
+
+20050202
+
+	Cleanup: explicit Makefile targets for "make package" and
+	"make non-interactive-package" to create ready-to-install
+	packages for distribution to other systems. Added extra
+	sanity checks to prevent attempts to overwrite your running
+	Postfix instance. Files:  Makefile.in, proto/PACKAGE_README.
+
+	Cleanup: when bounce_queue_lifetime > maximal_queue_lifetime,
+	it is adjusted to maximal_queue_lifetime, and a warning is
+	logged. Files:  *qmgr/qmgr.c.
+
+20050203
+
+	Cleanup: trivial-rewrite now restarts more timely after
+	changes in lookup tables.  Of the all the alternatives
+	tested, the simplest one produces the most bang for the
+	buck. The other code is left in place for illustrative
+	purposes. File:  trivial-rewrite/trivial-rewrite.c.
+
+	Cleanup: sendmail no longer ignores null command-line
+	recipients.  File: sendmail/sendmail.c.
+
+	Cleanup: "postfix start" background checks moved back to
+	the foreground so they can be stopped more easily.  File:
+	conf/postfix-script.
+
+20050204
+
+	Feature: REPLACE command in header/body_checks (implemented
+	as a combination of PREPEND and IGNORE) by Bastiaan Bakker.
+	File: cleanup/cleanup_message.c.
+
+	Cleanup: linted the manual pages for consistency in the
+	way manuals are referenced, and in the presentation of
+	command examples. Files: mantools/manlint, mantools/fixman,
+	mantools/postconf2man.
+
+20050205
+
+	Cleanup: updated the mass-deletion example in the postsuper
+	manual.
+
+20050206
+
+	Cleanup: don't count a [45]XX SMTP server greeting towards
+	the mx_session_limit setting. File: smtp/smtp_connect.c.
+
+	Feature: output address rewriting in the SMTP client. The
+	smtp_generic_maps parameter specifies an address mapping
+	that happens only when mail is delivered via SMTP. This is
+	typically used for hosts without a valid domain name, that
+	use something like localdomain.local instead.  This feature
+	can replace local mail addresses by valid Internet mail
+	addresses when mail needs to go across the Internet, but
+	not when mail is sent between accounts on the local machine.
+	Files:  smtp/smtp_proto.c, smtp/smtp_map11.c.
+
+	Cleanup: don't panic in mymalloc() when master can't find
+	any IP addresses. LaMont Jones. File: master/master_ent.c.
+
+20050207
+
+	Documentation: added a generic(5) manual page for consistency
+	with the already existing table driven mechanisms, added
+	references to or examples of the new generic mapping.
+
+	Bugfix: the header_checks REPLACE action mis-handled
+	multi-line replacement text in message headers, for example:
+	/(.*)/ REPLACE X-$1. File:  cleanup/cleanup_message.c.
+
+	Bugfix: the header_checks REPLACE action should not drop
+	the input when the action is NOT executed. File:
+	cleanup/cleanup_message.c.
+
+	Bugfix? Cleanup? Documentation? main.cf now implements
+	${name[?:]value} as promised in the postconf(5) manual.
+	Implemented by deleting the macro processor in dict_eval(),
+	and using the one in mac_expand() instead.  File: util/dict.c.
+
+20050208
+
+	Feature: check_ccert_access maptype:mapname for access(5)
+	control, based on code by Victor Duchovni. File:
+	smtpd/smtpd_check.c and documentation.
+
+	Safety: don't allow unlimited message size with limited
+	mailbox size. File: local/local.c, virtual/virtual.c.
+
+	Feature: new smtpd policy attributes ccert_subject,
+	ccert_issuer and ccert_fingerprint, with TLS client
+	certificate information, but only when verification was
+	successful.  Files:  src/smtpd/smtpd_check.c.
+
+	Cleanup: corrected the address verification data flow in
+	the ADDRESS_VERIFICATION_README illustration.
+
+20050209
+
+	Cleanup: the smtp generic mapping did syntax check on the
+	input address instead of the result. These tests were not
+	going to be useful in any case, because mail_addr_map()
+	canonicalizes the lookup result, including @dom1->@dom2
+	mapping. File:  smtp_map11.c.
+
+	Cleanup: made the generic mapping documentation consistent
+	with the implementation.
+
+	Cleanup: documented the myorigin/mydomain address rewriting
+	in canonical, generic and virtual alias maps.
+
+	Feature: updated LDAP and *SQL query interfaces using a
+	common infrastructure so that all have the same feature set
+	where possible. Victor Duchovni and many others. This code
+	was tested separately and was merged into the main stream
+	20050308. Files: global/db_common.[hc], global/dict_ldap.c,
+	global/dict_mysql.c, global/dict_pgsql.c, plus documentation.
+
+20050210
+
+	Bugfix: spurious fallback_relay warnings after 20050202.
+	Victor Duchovni.  File: smtp/smtp_connect.c.
+
+	Bugfix: (introduced while adopting Postfix/TLS patch) the
+	TLS cache scan stopped after expiring one entry.  Victor
+	Duchovni.  File: tls/tls_scache.c.
+
+	Safety: delete-behind when removing expired entries from
+	TLS session caches. With some maps the enumeration method
+	mis-behaves when the current entry is deleted. File:
+	tls/tls_scache.c.
+
+20050211
+
+	Cleanup: the "generics" feature (output address rewriting)
+	is renamed to "generic", for consistency with "canonical"
+	and "virtual".
+
+20050212
+
+	Cleanup: remove old trace(8) logfile before attempting
+	delivery (and after locking the message file exclusively).
+	Files: *qmgr/qmgr_message.c.
+
+	Cleanup: don't parse-then-regenerate message headers when
+	no address is changed by address rewriting operations. This
+	behavior was copied from the SMTP client's generic mapping
+	code.  Files: cleanup/cleanup_rewrite.c, cleanup/cleanup_map11.c,
+	cleanup/cleanup_masquerade.c, cleanup/cleanup_message.c..
+
+20050215
+
+	Bugfix: don't chmod queue files while running "postfix
+	set-permissions". This prevents mail from being labeled as
+	"corrupt" when a live Postfix system is upgraded.  Found
+	by Victor Duchovni.  File: conf/post-install.
+
+20050216
+
+	Feature: in smtpd?_discard_ehlo_keyword(s|_address_maps)
+	specify the pseudo keyword "silent-discard" in order to
+	avoid logging that some EHLO keyword is being suppressed.
+	File: global/ehlo_mask.[hc].
+
+20050217
+
+	Bugfix: typo in tls_server.c, breaking CApath.  Fix by
+	Philipp Morger. File: tls/tls_server.c.
+
+20050227
+
+	Bugfix (bug introduced 20040331): with SIGHUP ignored, the
+	postdrop signal handler would effectively ignore SIGINT,
+	SIGQUIT and SIGTERM.  Simplified the overly-conservative
+	protection against nested signals in postdrop, and added
+	some future proofing comments.  File:  postdrop/postdrop.c
+
+	Cleanup: when address rewriting is enabled, don't change
+	the capitalization of header labels, i.e. don't replace
+	FROM: or CC: by From: or Cc:. Files: cleanup/cleanup_message.c,
+	smtp/smtp_proto.c.
+
+20050228
+
+	Cleanup/portability: missing #includes and bad prototypes.
+	Matthias Andree, Carsten Hoeger, and others.
+
+20050302
+
+	Workaround: make TLS session caching work with perverse
+	sites that have multiple servers per hostname or even
+	multiple servers per IP address, but no shared TLS session
+	cache. The SMTP client TLS session cache is now indexed by
+	(server hostname, server address, server port, server helo
+	hostname). After an idea by Victor Duchovni. Files:
+	smtp/smtp_proto.c, tls/tls_client.c.
+
+20050303
+
+	Bugfix (bug inherited from Postfix/TLS patch): a rare 9kbyte
+	memory leak when in-memory TLS session information expires;
+	found by setting the expiry time shorter than the time to
+	deliver one or two messages with a very slow machine.  This
+	was due to a missing SSL_SESSION_free() call in the "new
+	session" call-back routines. Found by Victor Duchovni.
+	Files: tls/tls_client.c, tls/tls_server.c.
+
+	Workaround: OpenSSL is overly agressive when purging a
+	not-yet expired entry from a full in-memory cache: it also
+	purges the entry from the on-disk server session cache.
+	Workaround is to let only the tlsmgr purge entries from the
+	on-disk server session cache.  Found by Victor Duchovni.
+	File: tls/tls_server.c.
+
+20050304
+
+	Postfix releases are now signed with Wietse's new PGP key.
+	The old key was getting a bit short for today's standards.
+	The new public key can be found on the Postfix download
+	webpage. As proof of authenticity the new PGP key is signed
+	with Wietse's old PGP key.
+
+	Cleanup: check_mumble_{ns,mx}_access no longer attempt to
+	do MX or NS lookups for address literals. An address literal
+	is treated as its own MX host; there is no meaningful
+	equivalent for NS access control. File: smtpd/smtpd_check.c.
+
+20050310
+
+	Bugfix: the AIX and SUN compilers rightfully complained
+	about non-portable code in the "new" LDAP/SQL client. File:
+	global/db_common.c.
+
+	Workaround: some systems no longer recognize "tail +2" as
+	valid command syntax. Instead they require "improved" syntax
+	that is not valid on several other systems that Postfix
+	builds on.  So we have to stop using the tail command.
+	Files: Makefile.in, src/*/Makefile.in.
+
+20050312
+
+	Bugfix: the TLS session cache cleaning code didn't always
+	delete the right entry. Problem found by Victor Duchovni,
+	more problems found by Wietse. File: tls/tls_scache.c.
+
+20050314
+
+	Portability: Berkeley DB changed API from version 2.5 to
+	2.6. Rob Foehl. File: util/dict_db.c.
+
+20050315
+
+	Bugfix: when <unistd.h> is included, read is a reserved
+	identifier. File: smtpstone/smtp-source.c.
+
+20050321-27
+
+	Support for RFC 3463 enhanced status codes.  See also the
+	ENHANCED_STATUS_README (a hacker's guide) for background.
+
+	New module to pass around (status code + text) instead of
+	just text.  File: Files: global/dsn_util.c.
+
+	Status-related lookup tables now have an extra column for
+	enhanced status codes.  Files: global/sys_exits.c,
+	global/cleanup_strerror.c.
+
+	Cleanup: centralized mapping of errno values to delivery
+	status codes after failed delivery to mailbox, maildir, or
+	file. Error codes EAGAIN, and ESTALE are 4.2.0 temporary
+	errors; ENOSPC is a 4.3.0 temporary error; and EDQUOT and
+	EFBIG are 5.2.2 hard errors. For backwards compatibility,
+	the result of other errors depends on the delivery agent:
+	with local(8) everything else is a 5.2.0 hard error, and
+	with virtual(8) everything else is soft 4.2.0 error.  File:
+	global/mbox_open.c.
+
+20050324
+
+	Workaround: gcc -W (version 3.4.2 [FreeBSD] 20040728) no
+	longer warns about missing return statements. What a time
+	waste.
+
+	Workaround: gcc -E (version 3.4.2 [FreeBSD] 20040728) output
+	has changed, causing too much "make depend" output.
+
+20050325
+
+	Bugfix: when bouncing mail that was submitted with Postfix
+	sendmail, the cleanup daemon ignored the reason specified
+	in header/body_checks, and always produced a generic reason.
+	File: cleanup/cleanup_api.c.
+
+	Workaround: don't announce pipelining support when the
+	smtp-sink test program is configured to fail specific
+	commands with -r or -f (the fix is to build a proper SMTP
+	state engine into the smtp-sink test program).  File:
+	smtpstone/smtp-sink.c.
+
+20050326
+
+	Update: more PCRE error codes. File: util/dict_pcre.c.
+
+20050327
+
+	Bugfix: the SMTP and LMTP clients did not ask the queue
+	manager to reduce destination concurrency when "lost
+	connection" or "connection timed out" happened AFTER Postfix
+	received the server greeting. Files: smtp/smtp_trouble.c,
+	lmtp/lmtp-trouble.c.
+
+	Workaround: FreeBSD has incompatibly changed the output
+	format from "od", breaking regression test portability.
+
+	The TLS client session cache ID is now derived from the
+	server IP address, TCP Port, and server HELO hostname
+	if available. File: smtp/smtp_proto.c.
+
+20050328
+
+	Cleanup: the REPLACE action is no longer implemented as
+	PREPEND+IGNORE. The result remains in the input stream,
+	and is subject to address rewriting and other processing
+	where applicable.  File: cleanup/cleanup_message.c.
+
+	Feature: the TLS server name verification status is moved
+	out of the TLS session cache. This not only simplifies the
+	client-side TLS cache implementation, but also provides
+	better cache support for clients that connect to multiple
+	independent MTAs under the same DNS hostname or IP address,
+	provided that each MTA replies with a unique name in the
+	EHLO response. Patch by Victor Duchovni. Files: tlsmgr/tlsmgr.c,
+	tls/tls_verify.c, tls/tls_session.c, tls/tls_server.c,
+	tls/tls_scache.h, tls/tls_scache.c, tls/tls_misc.c,
+	tls/tls_mgr.h, tls/tls_mgr.c, tls/tls_client.c, tls/tls.h,
+	smtp/smtp_proto.c.
+
+20050330
+
+	Bugfix: in some compilation environments the SMTP and LMTP
+	clients could ignore enhanced status codes in server replies.
+	Bug introduced 20050329 while polishing working code.  Files:
+	smtp/smtp_chat.c, lmtp/lmtp_chat.c.
+
+	Feature: add enhanced status code support to the smtp-sink
+	test program. File: smtpstone/smtp-sink.c.
+
+20050331
+
+	Workarounds for ancient gcc compilers that can't handle
+	valid C. Bugs reported by Victor Duchovni. Files:
+	util/sys_defs.h, global/dsn_util.h, tls/tls_client.c.
+
+	Bugfix: when delivery to command failed, command output was
+	not reported. Fix was to enable format checks for the new
+	dsn_vstring_update() module. File: global/dsn_util.h,
+	global/pipe_command.c.
+
+20050401
+
+	Cleanup: ignore incorrect enhanced status codes (such as
+	5xx reply followed by a 4.x.x status), and don't look for
+	enhanced status codes unless the server replies with a
+	[245]XX reply.  Files: smtp/smtp_chat.c, lmtp/lmtp_chat.c.
+
+20050402
+
+	Feature: enhanced status code support for errors found by
+	the MIME processor. Files: global/mime_state.c,
+	cleanup/cleanup_message.c, smtp/smtp_proto.c.
+
+	Cleanup: updated error messages about MIME processing errors
+	in the SMTP client. These errors are no longer specific to
+	8bit->7bit conversion; they can also happen with generic
+	address mapping. File: smtp/smtp_proto.c.
+
+	Safety: SASL 2.1.19 has a version lookup routine that we
+	can use to detect compile time / run time version mis-matches
+	(also known as DLL hell).  Files: src/smtpd/smtpd_sasl_glue.c,
+	src/smtp/smtp_sasl_glue.c, src/lmtp/lmtp_sasl_glue.c.
+
+20050404
+
+	Typo: missing comma after dsn=x.yy.zz logging. File:
+	global/log_adhoc.c.
+
+	Feature: specify "smtpd_sasl_authenticated_header = yes"
+	to report the SASL login name in the Received: message
+	header, so that the login name is shared with the whole
+	world. Based on code by Branko F. Gracnar. Files:
+	smtpd/smtpd.c, and documentation.
+
+20050407
+
+	@%^!#& Thanks to inadequate SASL documentation the client
+	could negotiate a security layer where none was desired.
+	Better documentation has become available since Postfix
+	SASL support was implemented, and now Postfix needs to be
+	fixed. Files: */*_sasl_glue.c.
+
+20050409
+
+	Safety: the CDB map now logs a warning when the source file
+	is newer than the indexed file, just like the Berkeley DB
+	and DBM maps. Michael Tokarev. File: util/dict_cdb.c.
+
+20040411
+
+	Portability: put the SASL DLL Hell guard after the declarations
+	instead of before.  Reported by Marcus Grando. Files:
+	smtp/smtp_sasl_glue.c, lmtp/lmtp_sasl_glue.c.
+
+20050412
+
+	Infrastructure: change the disposition or other properties
+	of an embryonic queue file. This is currently used only to
+	place mail on hold.  After code by Victor Duchovni.  Files:
+	global/mail_stream.[hc], cleanup/cleanup_api.c.
+
+	Bugfix: while updating the cleanup_flush() infrastructure
+	eliminated a portability problem that was introduced when
+	"REJECT text" support was added. File: cleanup/cleanup.c.
+	
+20050413
+
+	Portability: don't mix socket message send/receive calls
+	with socket stream read/write calls. The fact that you can
+	get away with it only on some stacks implies that there is
+	no long-term guarantee. Specify -DCAN_WRITE_BEFORE_SENDING_FD
+	if you feel brave. File: util/sys_defs.h.
+
+	Robustness: re-compile all object files after the "make
+	makefiles" options have changed. Files: src/*/Makefile.in.
+
+	Tweaking: reply with 5.3.4 when the message size exceeds
+	the mail system message_size_limit, instead of 5.2.3 which
+	is a mailbox specific status. File: smtpd/smtpd_check.c.
+
+20050417
+
+	Safety: don't call syslog from a user-triggered signal
+	handler.  File: postdrop/postdrop.c.
+
+20050421
+
+	Bugfix: don't panic when the fall-back relay can't be used
+	because the local MTA is MX for the destination.  File:
+	smtp/smtp_connect.c.
+
+20050422
+
+	Bugfix: don't panic when the fall-back relay can't be used
+	because it was already tried via a cached session. Produce
+	a default excuse instead. File: smtp/smtp_connect.c.
+
+	Bugfix: postsuper could lose an error message after reporting
+	a fatal error.  File: postsuper/postsuper.c.
+
+20050426
+
+	Bugfix: simplified and improved the 20050422 fall-back relay
+	fix. File: smtp/smtp_connect.c.
+
+20050427
+
+	Final solution for the 20050422 fall-back relay problem:
+	truncate the fall-back host list when the local MTA is MX
+	for some destination. Files: util/argv.c, smtp/smtp_connect.c.
+
+	Cleanup: extra dsn_vstring_update_dsn() routine to shut up
+	GCC complaints about valid code. Files: src/global/dsn_util.c,
+	src/global/mbox_open.c, src/lmtp/lmtp_addr.c, src/smtp/smtp_addr.c,
+	src/smtp/smtp_connect.c.
+
+20050429
+
+	The Postfix SMTP server now announces ENHANCEDSTATUSCODES
+	support in the EHLO response, as described in RFC 2034.
+	File: smtpd/smtpd.c.
+
+20050503
+
+	Propagate enhanced status code from error(8) mailer to SMTP
+	server replies. File: smtpd/smtpd_check.c.
+
+	Cleanup: more consistent format of smtpd warning logging,
+	so that it is easier to sort.  Files: smtpd/smtpd.c,
+	smtpd/smtpd_check.c.
+
+20050504
+
+	Yikes. People are exposing the smtp-sink test program to
+	hostile environments, while it was designed for controlled
+	environments. Completed the support for write timeouts,
+	added support for read timeouts, and added a missing exception
+	handler for the 220 server greeting.  File: smtpstone/smtp-sink.c.
+
+20050506
+
+	Cleanup: with "REJECT 4.X.Y ..." actions in header/body_checks,
+	change the SMTP server reply code from 550 into 450, instead
+	of having the SMTP server change the DSN into 5.X.Y.  File:
+	smtpd/smtpd.c.
+
+20050510
+
+	Usability: when reporting a sender address problem, transform
+	a recipient DSN status (e.g., 4.1.1-4.1.6) into the
+	corresponding sender DSN status, and vice versa; and when
+	reporting a non-address problem, transform a sender or
+	recipient DSN status into a generic non-address DSN status
+	(e.g., 4.0.0).  This transformation may be needed when the
+	same access table or RBL reply template are used for client,
+	helo, sender, or recipient restrictions; or when the same
+	error mailer information is used for senders or recipients.
+	Files: smtpd/smtpd_check.c, smtpd/smtpd_dsn_fix.[hc].
+
+20050512
+
+	Feature: support for more SASL logging call-backs, if these
+	are defined in the compile-time environment. Files:
+	smtpd/smtpd_sasl_glue.c, smtp/smtp_sasl_glue.c.
+
+20050513
+
+	Workaround: Postfix now uses "localdomain" as the default
+	domain name when $myhostname is not in "host.domain" form.
+	Files: global/mail_params.[hc].
+
+---------
+
+20050415-20050615
+
+	As of 20050525, DSN support does not involve new queue file
+	record types, so you can switch back to older Postfix
+	versions. Older non-production releases did introduce queue
+	file incompatibility.
+
+	DSN support is selected via the SMTP port by extra parameters
+	to the MAIL FROM and RCPT TO commands, and with the Postfix
+	sendmail command with new command-line options: -N (specify
+	notification options such as "never", "success", "delay"
+	or "failure") and -V (specify an envelope ID that identifies
+	the mail submission transaction).  VERP support now uses
+	-XV instead of -V.
+
+	The implementation piggy-backs on the trace(8) service that
+	was already used for "sendmail -v" (verbose delivery) and
+	for "sendmail -bv" (what-if) reports. You can no longer
+	requests these functions together with DSN support.
+
+	All this means revision of bounce/defer/trace client
+	interfaces, of the bounce service, the record reading loops
+	in postdrop, cleanup(8) and qmgr(8), the queue manager to
+	delivery agent protocol, and some extra SMTP protocol
+	parameters in smtpd(8), lmtp(8) and smtp(8).
+
+	New code module: global/dsn_smtp.[hc] for RFC 3461 related
+	information (but this may still change).
+
+	Feature: "sendmail -G" is no longer a no-op.  Message headers
+	are treated as if the message has a remote origin. Files:
+	sendmail/sendmail.c, postdrop/postdrop.c.
+
+	Feature: automatic BCC senders are now created as if they
+	were received with NOTIFY=NEVER, in case it helps. File:
+	cleanup/cleanup_addr.c
+
+	Compatibility: with large bounces, send message headers
+	only, instead of truncating MIME messages in the middle.
+
+20050517
+
+	Bugfix: in a DSN report, the original recipient should not
+	be xtext encoded. File: bounce/bounce_notify_util.c.
+
+20050523
+
+	Bugfix: mymalloc() panic with mistyped server host list.
+	File: global/dict_pgsql.c.
+
+20050525
+
+	Feature: specify delay_warning_time=1 to get immediate
+	notification of delay. File: qmgr/qmgr_active.c.
+
+20050526
+
+	Reset the Postfix original recipient when delivering to
+	mailing list.
+
+20050601
+
+	Modified the master backgrounding procedure to not abort
+	when the master is already a process group leader. This
+	happens when people bypass or modify the official Postfix
+	start-up procedure.  Jacek Konieczny. File: master/master.c.
+
+20050602
+
+	Sanity check: don't report "address in use" when some Postfix
+	socket is a directory. File: util/unix_listen.c.
+
+20050613
+
+	Now that the over-all structure of the code is proving
+	itself, interfaces can be cleaned up. This means nicer names
+	for variables, functions and data structures, and dedicated
+	read/write routines for recipient and DSN information.
+	These remove a lot of clutter from the bounce client and
+	server code.  Files: dsn_print.c dsb_scan.c, rcpt_print.c,
+	rcpt_buf.c.
+
+	For Sendmail compatibility, the Postfix sendmail -V option
+	no longer controls VERP usage, but is used to specify the
+	DSN envelope ID.  In order to provide a smooth transition,
+	backwards compatibility code recognizes when -V is being
+	used for VERP control.  It will do the right thing, and
+	warns the user to use -XV instead. File: sendmail/sendmail.c.
+
+20050614
+
+	The cleanup server writes bounce (delivery failure) and
+	trace (success) records, but it no longer requests sender
+	notification.  That is now handled by the queue manager.
+	The reason is that the cleanup server must be able to abort
+	a request including its bounce and trace logfiles, so it
+	must not take actions that can't be undone.
+
+20050615
+
+	Cleanup: the SMTP client now sends QUIT when the initial
+	HELO handshake fails. it still doesn't send QUIT when the
+	server greets with a [45]XX code, as that is handled in the
+	connection management code before a session context exists.
+	File: smtp/smtp_connect.c.
+
+	Cleanup: made the quote_821_local() routine "const" clean.
+	File: global/quote_821_local.[hc].
+
+20050616
+
+	Bugfix: missing or mis-placed va_end() macros, found in
+	Postfix 2.3 code review. Files: util/netstring.c,
+	util/myaddrinfo.c, util/attr_clnt.c, util/vstream.c.
+
+	Bugfix: the SMTP server now separates the message size check
+	from the queue space check, so that the size check can be
+	done before an SMTPD proxy filter. Files: smtpd/smtpd.c,
+	smtpd/smtpd_check.c.
+
+20050617
+
+	Postdrop didn't recognize the new recipient attributes.
+	File: postdrop/postdrop.c.
+
+	Feature: configurable MAILER-DAEMON replacement for the
+	null sender address that is used by the pipe(8) delivery
+	agent on the command line and in message headers. Command-line
+	address quoting is disabled when the replacement is empty.
+	File: pipe/pipe.c.
+
+20050618
+
+	With virtual aliasing enabled, Postfix would always report
+	successful alias expansion, even when no alias was expanded.
+	File: cleanup/cleanup_out_recipient.c.
+
+20050621
+
+	Portability: file descriptor passing is available for Tru64
+	UNIX, but not for AIX4 and IRIX6.  Albert Chin. File:
+	util/sys_defs.h.
+
+20050622
+
+	Cleanup: the DNS lookup code now accommodates name server
+	replies longer than 4 kbytes, with a hard upper limit of
+	32kbytes. For safety reasons, the number of MX host addresses
+	that the SMTP client will try was reduced from unlimited
+	to just 5, so that Postfix won't spend forever trying to
+	connect to dozens and dozens of bogus MX hosts. Files:
+	dns/dns_lookup.c, global/mail_params.h.
+
+	Cleanup: the code that handles a 4xx or 5xx SMTP server
+	greeting was moved from the connection management module
+	to the protocol engine, for cleaner error handling.  This
+	means that the failed session now counts towards the limit
+	on the total number of SMTP sessions per domain name (default:
+	smtp_mx_session_limit = 2).  Files: smtp/smtp_connect.c,
+	smtp/smtp_proto.c.
+
+20050623
+
+	Cleanup: generalized the delegated attribute scan/print
+	interfaces, and updated the deliver_pass module with delegated
+	attribute scan/print support. Files: util/attr_scan0.c,
+	util/attr_print0.c, global/dsb_scan.c, global/dsn_print.c,
+	global/rcpt_buf,c global/rcpt_print.c, global/deliver_pass.c.
+
+	Added delegated attribute scan/print function support to
+	the base64 and plain attribute I/O encodings. Files:
+	util/attr_scan_plain.c util/attr_print_plain.c.
+
+20050624
+
+	Added "." to the list commands that smtp-sink can "break"
+	(by disconnecting, or by responding with a 4XX or 5XX reply
+	code). File: smtpstone/smtp-sink.c.
+
+20050625
+
+	Safety: allow only 4.x.x and 5.x.x enhanced status codes
+	in header/body_checks REJECT actions. File:
+	cleanup/cleanup_message.c.
+
+20050627
+
+	Code cleanup: generalized the smtp-sink code that simulates
+	server errors. File: smtpstone/smtp-sink.c.
+
+20050629
+
+	Code cleanup: the smtp_mx_session_limit setting (per delivery
+	request session count limit) now ignores sessions that fail
+	to complete the TCP, SMTP, EHLO or TLS handshake (was: TCP
+	and SMTP).  File: smtp/smtp_proto.c.
+
+20050630
+
+	Updated the example spf.pl script to version 1.06.
+
+	Portability: the file descriptor passing code broke on LP64
+	systems (inherited from Stevens Network Programming).  Files:
+	util/unix_send_fd.c, util/unix_recv_fd.c.
+
+20050706
+
+	Robustness: the SMTP client now disables connection caching
+	when it is unable to communicate with the scache(8) server,
+	instead of looping forever. File: global/scache_clnt.c.
+
+	Portability: after sending a socket, the scache(8) server
+	now waits for an ACK from the connection cache client before
+	closing the socket that it just sent. Files: scache/scache.c,
+	global/scache_clnt.c.
+	 
+20050708
+
+	Bugfix: missing returns in 20050706 caching disabling code
+	(in error handling code that never executes).  File:
+	global/scache_clnt.c.
+
+	Portability: use explicitly unsigned operands when doing
+	bit-wise shift operations on data larger than a character.
+
+20050709-15
+
+	Migration of data object sizes and offsets from int->ssize_t
+	and unsigned->size_t for better portability to LP64 and
+	LLP64 systems where *size_t is 64 bits wide.   This change
+	has no effect on 32-bit systems.
+
+	This change not only eliminated some obscure portability
+	bugs (see two paragraphs down), it also eliminated many
+	unnecessary conversions back and forth between 32-bit and
+	64-bit integers, because all relevant system library functions
+	take *size_t arguments or return *size_t results.
+
+	Simply changing every data object size or offset to size_t
+	(which is unsigned!) would be dangerous.  A lot of code was
+	written assuming signed arithmetic and rejects negative
+	lengths, which can happen as the result of integer overflow.
+
+	Portability: on LP64 systems, integer expressions are int,
+	but sizeof() and pointer difference expressions are larger.
+	The above changes fixed a few discrepancies with function
+	calls where *size_t was passed while the old code expected
+	an int: clean_env() versus argv_addn(), and code that sent
+	binary blobs via the TLS session cache manager protocol.
+
+20050711
+
+	Bugfix: don't include <> when auto-generating an ORCPT
+	address from a client RCPT TO command. File: smtpd.c.
+
+20050712
+
+	Cleanup: cleanup_out_recipient() still generated DSN records
+	that were incompatible with pre-DSN Postfix versions.  File:
+	cleanup/cleanup_out_recipient.c.
+
+20050716
+
+	Bugfix: the smtpd_sasl_authenticated_header code did not
+	check if SASL was actually enabled. File: smtpd/smtpd.c.
+
+20050720
+
+	Feature: reverse client hostname. This is set at connection
+	time with information from the SMTP client address->name
+	mapping, and can be overruled with the REVERSE_NAME attribute
+	in the XCLIENT command. File: smtpd/smtpd_peer.c.
+
+	Cleanup: renaming of several confusing restriction names:
+	reject_unknown_client -> reject_unknown_client_hostname,
+	reject_unknown_hostname -> reject_unknown_helo_hostname,
+	reject_invalid_hostname -> reject_invalid_helo_hostname,
+	and reject_non_fqdn_hostname -> reject_non_fqdn_helo_hostname.
+	The old names are still recognized and documented.  Files:
+	global/mail_params.h, smtpd/smtpd.c, smtpd/smtpd_check.c.
+
+	Feature: reject_unknown_reverse_client_hostname. This rejects
+	clients that have no address to name mapping (unlike the
+	reject_unknown_client_hostname feature which requires that
+	the address->name and name->address mappings resolve to the
+	client IP address).  Files: global/mail_params.h,
+	smtpd/smtpd_peer.c, smtpd/smtpd.c, smtpd/smtpd_check.c.
+
+20050726
+
+	Horror: total rewrite of DNS client error handling because
+	some misguided proposal attempts to give special meaning
+	to some syntactically invalid MX hostname lookup result.
+	Not only that, people expect sensible results with
+	reject_unknown_sender_domain etc.  Files: dns/dns_lookup.c,
+	smtp/smtp_addr.c smtpd/smtpd_check.c, lmtp/lmtp_addr.c.
+
+	Cleanup: HOLD action executes only once, to reduce noise
+	in the logfile. Files: cleanup/cleanup_message.c, smtpd/smtpd.c.
+
+20050806
+
+	Workaround: accept(2) fails with EPROTO when the client
+	already disconnected (SunOS 5.5.1). File: sane_accept.c.
+
+20050815
+
+	Workaround: old Solaris compilers can't link an archive
+	without globally visible symbols. File: tls/tls_misc.c.
+
+20050825
+
+	Feature: message_reject_characters and message_strip_characters
+	specify what characters in message content Postfix will
+	reject or remove. Based on patch by John Fawcett. Files:
+	cleanup/cleanup_message.c, cleanup/cleanup_init.c.
+
+	Safety: when the cleanup server rejects the content of mail
+	that is submitted with the Postfix sendmail command, or
+	re-queued with "postsuper -r", strip the message body from
+	the bounce message to reduce the risks from harmful content.
+	Files: cleanup/cleanup_envelope.c, cleanup/cleanup_bounce.c.
+
+	Feature: the smtpd_proxy_filter parameter value can now be
+	prefixed with "unix:" (for UNIX-domain socket) and "inet:"
+	(for TCP socket). TCP sockets are the default.  Patch by
+	Edwin Kremer. File: smtpd/smtpd_proxy.c.
+
+20050828
+
+	Bugfix: after adding DSN support, error notification was
+	broken for too large mail that was submitted with the Postfix
+	sendmail command, forwarded by the local(8) delivery agent,
+	or re-queued with "postsuper -r". The message would be saved
+	to the "corrupt" queue.
+
+	The mistake was to leave the truncated message in the
+	incoming queue and to ask the queue manager to notify the
+	sender; this was not possible because the queue manager
+	cannot (and should not) handle truncated queue files.
+
+	The fix is to have the cleanup server send the bounce
+	message, just like it did before DSN support was added.  As
+	a side effect, Postfix will no longer send DSN_SUCCESS
+	notices after virtual aliasing, when the cleanup server
+	bounces all the recipients of the message anyway.  This
+	could be called a feature.  File: cleanup/cleanup_bounce.c.
+
+	Also needed for this fix: a new vstream_fpurge() routine
+	that discards unread/written data from a VSTREAM.  It's
+	needed before cleanup_bounce() can seek to the start of the
+	queue file after a file size error. File: util/vstream.c.
+
+20050920
+
+	Cleanup: removed the legacy "tls_info" structure, factored
+	out common code for peer_CN and issuer_CN lookup, and added
+	sanity check to not verify subject common names that contain
+	nulls or that are execessively long. Patch by Victor Duchovni.
+	Files: tls_client.c, tls_server.c, tls_session.c, tls_misc.c,
+	tls_verify.c.
+	
+20050922
+
+	Bugfix: the *SQL clients did not uniformly choose the
+	database host from the available pool of servers due to an
+	off-by-one error, so that the "last" available server was
+	not selected. Leandro Santi. Files: dict_mysql.c, dict_pgsql.c.
+
+	Update: common code factored out into db_common.c, and
+	adoption of Liviu Daia's connection aware MySQL quoting.
+	Patch by Victor Duchovni.  Files: dict_ldap.c, dict_mysql.c,
+	dict_pgsql.c, db_common.c.
+
+20050923
+
+	Safety: don't update the local(8) delivery agent's idea of
+	the Delivered-To: address while expanding aliases or .forward
+	files. When an alias or .forward file changes the Delivered-To:
+	address, it ties up one queue file and one cleanup process
+	instance while mail is being forwarded.  To get the old
+	behavior, specify "frozen_delivered_to = no".  Problem
+	reported by Michael Tokarev, but found independently by
+	others.  Files: local/local.c, local/aliases.c, local/dotforward.c,
+	local/mailbox.c, local/maildir.c.
+
+	Logging: additional SASL debug logging by Andreas Winkelmann.
+	Files: */*sasl_glue.c.
+
+20050929
+
+	Paranoia: don't ignore garbage in SMTP or LMTP server replies
+	when ESMTP command pipelining is turned on. For example,
+	after sending ".<CR><LF>QUIT<CR><LF>", Postfix could recognize
+	the server's 2XX QUIT reply as a 2XX END-OF-DATA reply after
+	garbage, causing mail to be lost. The SMTP and LMTP clients
+	now report a remote protocol error and defer delivery.
+	Files: smtp/smtp_chat.c, smtp/smtp_trouble.c, lmtp/lmtp_chat.c,
+	lmtp/lmtp_trouble.c.
+
+	Performance: specify "smtpd_peername_lookup = no" to disable
+	client hostname lookups in the SMTP server. All clients are
+	treated as "unknown". This should be used only under extreme
+	conditions where DNS lookup latencies are critical. File:
+	smtpd/smtpd_peer.c.
+
+20051010
+
+	Feature: smtpd_client_new_tls_session_rate_limit parameter
+	to limit the number of new (i.e. uncached) TLS sessions
+	that a remote SMTP client may negotiate per unit time. This
+	feature, which is off by default, can limit the CPU load
+	due to expensive crypto operations.  Files: global/anvil_clnt.c,
+	anvil/anvil.c, smtpd/smtpd.c.
+
+	Cleanup: eliminated massive code duplication in the anvil
+	server that resulted from adding similar features one at a
+	time.  File: anvil/anvil.c.
+
+20051011
+
+	Bugfix: raise the "policy violation" flag when a client
+	request exceeds a concurrency or rate limit.  File:
+	smtpd/smtpd.c.
+
+	Bugfix (cut-and-paste error): don't reply with 421 (too
+	many MAIL FROM or RCPT TO commands) when we aren't closing
+	the connection.  File: smtpd/smtpd.c.
+
+20051012
+
+	Polishing: content of comments and sequence of code blocks
+	in the anvil server, TLS request rate error message in the
+	smtp server, and documentation, but no changes in code.
+	Files: anvil/anvil.c, smtpd/smtpd.c.
+
+20051013
+
+	Horror: some systems have basename() and dirname() and some
+	don't; some implementations modify their input and some
+	don't; and some implementations use a private buffer that
+	is overwritten upon the next call. Postfix will use its own
+	safer versions called sane_basename() and sane_dirname().
+	These never modify the input, and allow the caller to control
+	how memory is allocated for the result.  File:
+	util/sane_basename.c.
+
+	Feature: "sendmail -C path-to-main.cf" and "sendmail -C
+	config_directory" now do what one would expect. File:
+	sendmail/sendmail.c.
+
+	Bugfix: don't do smtpd_end_of_data_restrictions after the
+	transaction failed due to, e.g., a write error.  File:
+	smtpd/smtpd.c.
+
+	Cleanup: the SMTP server now enforces the message_size_limit
+	even when the client did not send SIZE information with the
+	MAIL FROM command.  This protects before-queue content
+	filters against over-size messages.  File: smtpd/smtpd.c.
+
+20051017
+
+	Bugfix: after DSN support was added, smtp_skip_5xx_greeting
+	no longer recognized a 5xx SMTP status as a 4xx one. Found
+	by Ralf Hildebrandt. Fix: use the enhanced status code
+	instead of the SMTP reply code to choose between permanent
+	or transient errors. File: smtp/smtp_trouble.c.
+
+	Feature: smtp-sink can hard-reject, soft-reject or simply
+	drop connection requests.  File: smtpstone/smtp-sink.c.
+
+	Documentation: clarified the processing of server replies,
+	specifically the reply code and the enhanced status code,
+	in smtp_chat.c.
+
+20051024
+
+	Performance: new smtp_connection_reuse_time_limit parameter to
+	limit connection reuse by elapsed time, instead of limiting
+	the number of deliveries per connection.  Bounding by time
+	favors delivery over connections that perform well, while
+	bounding by number of deliveries allows slow connections
+	to drag down the performance.  Insight and initial
+	implementation by Victor Duchovni, Morgan Stanley. Files:
+	smtp_connect.c, smtp_session.c,
+
+	Bugfix: the next-hop logical destination information for
+	connection caching was reset only after a good non-TLS
+	connection, so that cached connections to non-TLS backup
+	servers could suck away traffic from TLS primary servers
+	(the Postfix SMTP client cannot cache an open TLS connection).
+	Found during code review. This is fixed with multi-valued
+	connection caching state: expired, cachable, non-cachable,
+	and bad.  Files: smtp_connect.c, smtp_trouble.c.
+
+	Bugfix: adding support for "sendmail -C" broke "sendmail
+	-q".  File: sendmail/sendmail.c.
+
+20051101
+
+	Migration from a single "arrival time" stamp to a structure
+	with time stamps from different stages of message delivery.
+	The first iteration merely replaces "arrival time" stamps
+	by a structure or pointer to structure, and uses only the
+	arrival time field of that structure.  This is an extensive
+	but straightforward transformation, based on example by
+	Victor Duchovni, Morgan Stanley.  Files: anything that
+	invokes bounce_append etc., the log_adhoc module, and
+	anything that sends or receives a delivery request.
+
+20051102
+
+	Completion of support for time stamps from different stages
+	of message delivery. The information is now logged as
+	"delays=a/b/c/d" where a=time before queue manager, including
+	message transmission; b=time in queue manager; c=connection
+	setup including DNS, HELO and TLS; d=message transmission
+	time. Unlike Victor's example which used time differences,
+	this implementation uses absolute times. The decision of
+	what numbers to subtract actually depends on program history,
+	so we want to do it in one place.  Files: global/log_adhoc.c,
+	smtp/smtp_connect.c, smtp/smtp_proto.c, smtp/smtp_trouble.c,
+	lmtp/lmtp_proto.c, lmtp/lmtp_trouble.c.
+
+20051103
+
+	Refinement of time stamping and delays formatting.  The
+	hand-off time is now stamped in the delivery agent, so that
+	time is properly attributed when a transport is saturated
+	or throttled.  Delays are now logged if larger than 0.01
+	second. Files: *qmgr/qmgr_deliver.c, global/deliver_request.c,
+	global/log_adhoc.c.
+
+20051104
+
+	New parameter delay_logging_time_resolution (default: 10000
+	microseconds, or 0.01 second) that controls the detail in
+	the new "delays=a/b/c/d" logging. Specify a power of 10
+	in the range from 1 to 100000. File: global/log_adhoc.c.
+	Parameter renamed 20051108.
+
+20051105
+
+	All delay logging now has sub-second resolution. This means
+	updating all code that reads or updates the records that
+	specify when mail arrived, and ensuring that mail submitted
+	with older Postfix versions produces sensible results.
+	Files: global/post_mail.c, global/mail_timeofday.[hc],
+	global/log_adhoc.c, postdrop/postdrop.c, pickup/pickup.c,
+	cleanup/cleanup_envelope.c, cleanup/cleanup_message.c,
+	smtpd/smtpd.c, qmqpd/qmqpd.c, *qmgr/qmgr_message.c,
+	*qmgr/qmgr_active.c, local/forward.c.
+
+20051106
+
+	The SMTP client logs the remote server port in the form of
+	relay=hostname[hostaddr]:port to the local maillog file.
+	The port number is NOT included in DSN status reports,
+	because remote users have no need to know such internal
+	information.  Files: smtp/smtp_session.c, smtp/smtp_proto.c,
+	smtp/smtp_trouble.c.
+
+	Cleanup: encapsulated queue file time read/write operations
+	with a few simple macros, to make future changes in time
+	representation less painful.
+
+20051108
+
+	Cleanup: eliminated floating point operations from the
+	ad-hoc delay logging code. Files: util/format_tv.[hc],
+	global/log_adhoc.c.
+
+	The delay logging resolution is now controlled with the
+	delay_logging_resolution_limit parameter, which specifies
+	the maximal number of digits after the decimal point.
+
+	Bugfix: two messages could get the same message ID due to
+	a race condition. This time window was increased when queue
+	file creation was postponed from MAIL FROM until the first
+	accepted RCPT TO.  The window is closed again. Found by
+	Victor. Files: global/mail_stream.c, global/mail_queue.c,
+	cleanup/cleanup_message.c.
+
+20051109
+
+	qshape.pl updated for extra microsecond time field in Postfix
+	queue files.
+
+	Cleanup: removed obsolete code that handles rejected/dropped
+	connections before the HELO handshake. File: smtp/smtp_connect.c.
+
+	Bugfix: XCLIENT broke when reverse hostname support was added.
+	Fix by Tomoyuki Sakurai. File: smtpd/smtpd.c.
+
+20051110
+
+	Workaround: don't set the delay warning timer for messages
+	from inside or from outside that have the null sender as
+	recipient. This was a waste of time, because the warning
+	would always be discarded.  File: cleanup/cleanup_envelope.c.
+
+	Feature: the built-in mail delivery status notification
+	text is now implemented by built-in templates. Files:
+	bounce/bounce_template.c, bounce/bounce_notify_util.c.
+
+20051112
+
+	Feature: configurable bounce message templates based on
+	contribution by Nicolas Riendeau. I kept the general format
+	of his templates, but placed them together in one file to
+	reduce process initialization overhead (most requests to
+	the bounce daemon are not for sending bounce messages).
+	Files: bounce/bounce_template.c, bounce/dict_ml.c (to be
+	moved to library if useful enough). A sample bounce message
+	template file is installed as $config_directory/bounce.cf.default.
+
+20051113
+
+	Feature: "postconf -b filename" to preview the non-default
+	bounce message templates with $name expansions in the text.
+	The actual work is of course done by the bounce daemon.
+
+20051114
+
+	Feature: -V option to make Postfix daemons to log to stderr.
+	This is used when a daemon is invoked in stand-alone mode
+	by a (non-daemon) command.
+
+	Feature: "postconf -t" displays DSN templates, headers and
+	all; use postconf -t ''" to view built-ins.
+
+	Cleanup: renamed fail_template into failure_template.
+
+20051117
+
+	Cleanup: bounce template code reorg, no functionality change.
+	Files: bounce/bounce_template.[hc], bounce/bounce_templates.c,
+	bounce/bounce_notify_util.c.
+
+20051118
+
+	Bugfix: new bounce template code did not return after
+	template syntax error. File: bounce/bounce_template.c
+
+	Safety: permit_mx_backup now requires that the local MTA
+	is not listed as primary MX for the recipient domain. This
+	prevents mail loops when someone points the primary MX
+	record to Postfix.
+
+20051119
+
+	Workaround: some SMTP servers announce multiple but different
+	lists of SASL methods. Postfix now concatenates the lists
+	instead of logging a warning and remembering only one. File:
+	smtp/smtp_sasl_proto.c.
+
+	Bugfix: the queue manager did not write a per-recipient
+	defer logfile record when the delivery agent crashed between
+	receiving a delivery request, and reporting the delivery
+	status to the queue manager.  Found while redesigning the
+	code that handles unavailable transports or destinations.
+	Files: *qmgr/qmgr_deliver.c.
+
+20051121
+
+	Workaround: do not build the bounce.cf.default template
+	while compiling Postfix  - it breaks when the default
+	mail_owner etc. accounts don't exist.  Reported by Liviu
+	Daia.
+
+	Compatibility: added permit_auth_destination emulation to
+	the permit_mx_backup feature. This avoids surprises with
+	sites that used permit_mx_backup to authorize all their
+	incoming mail.
+
+20051122-24
+
+	Feature: sender_dependent_relayhost_maps, lookup tables that specify
+	a sender-dependent override for the relayhost parameter
+	setting.  The lookup is done in the trivial-rewrite server,
+	instead of the queue manager where it does not belong.
+	Files: global/resolve_clnt.c, global/tok822_resolve.c,
+	trivial-rewrite/resolve.c, trivial-rewrite/transport.c,
+	*qmgr/qmgr_message.c.
+
+	Also: address_verify_sender_dependent_relayhost_maps for
+	completeness.
+
+20051124
+
+	Feature: specify "smtp_sender_dependent_authentication =
+	yes" to enable sender-dependent SASL passwords. This disables
+	SMTP connection caching to ensure that mail from different
+	senders is delivered with the appropriate credentials. This
+	is an extended version of a patch by Mathias Hasselmann.
+	Files: smtp/smtp_connect.c, smtp/smtp_sasl_glue.c.
+
+20051126
+
+	Workaround: log warning when REDIRECT or FILTER are used
+	in smtpd_end_of_data_restrictions. File: smtpd/smtpd_check.c.
+
+	Log warning when REDIRECT, FILTER, HOLD and DISCARD are
+	used in smtpd_etrn_restrictions. File: smtpd/smtpd_check.c.
+
+20051128
+
+	Bugfix: moved code around from one place to another to make
+	REDIRECT, FILTER, HOLD and DISCARD access(5) table actions
+	work in smtpd_end_of_data_restrictions.  PREPEND will not
+	be fixed; it must be specified before the message content
+	is received.  Files: smtpd/smtpd.c, smtpd/smtpd_check.c,
+	cleanup/cleanup_extracted.c, pickup/pickup.c.
+
+	Safety: abort if the SMTP or QMQP server runs with non-postfix
+	privileges while it's connected to the network.  Files:
+	smtpd/smtpd_peer.c, qmqpd/qmqpd_peer.c.
+
+20051201
+
+	Bugfix: the LMTP client would reuse a session after negative
+	reply to the RSET command (which may happen when client and
+	server somehow get out of sync). Problem found by Christian
+	Theune.  Files: lmtp/lmtp.c, lmtp/lmtp_proto.c.
+
+20051202
+
+	Bugfix: the 20051128 code move for "smtpd_end_of_data_restrictions"
+	broke "postsuper -r".
+
+20051202-3
+
+	Cleanup: the SMTP client now also implements the LMTP
+	protocol.  Files: smtp/smtp.c, smtp/smtp_connect.c,
+	smtp/smtp_proto.c, smtp/smtp_dsn.c, smtp_state.c,
+	smtp_sasl_glue.c.
+
+	As before, the LMTP behavior is controlled with parameters
+	named lmtp_xxx instead of smtp_xxx.  However there are now
+	a lot more lmtp_xxx parameters :-) With few exceptions, all
+	SMTP features are now also available with LMTP. The exceptions
+	are related to the HELO and EHLO commands, which exist in
+	SMTP only. There are equivalent LHLO command parameters
+	where it makes sense.
+
+20051206
+
+	SMTP+LMTP client connection management code rewritten to
+	support UNIX-domain socket connections.
+
+20051207
+
+	Bugfix: race condition in the connection caching protocol,
+	found while adding connection caching for UNIX-domain sockets
+	(used for LMTP delivery).  This was introduced with the
+	20050706 workaround, and may the same problem that Jussi
+	Silvennoinen experienced (in Postfix 2.2.6) with SMTP after
+	an upgrade.  Files: scache/scache.c.
+
+	Bugfix: smtp-sink and qmqp-sink didn't ignore SIGPIPE.
+
+20051208
+
+	Robustness: reduced timeouts in the connection caching
+	client, so that a malfunctioning service does not prevent
+	mail delivery. This uses similar code that already exists
+	for the anvil(8) client and the tlsmgr(8) client. Files:
+	global/scache_clnt.c, smtp/smtp.c.
+
+	To make reduced connection caching client timeouts possible,
+	connection management was moved from the attr_clnt(3) module
+	to the auto_clnt(3) module where it belongs. The auto_clnt(3)
+	module is now a full alternative for the clnt_stream(3)
+	module. Files: util/auto_clnt.c, util/attr_clnt.c.
+
+	Bugfix: the best_mx_transport, mailbox_transport and
+	fallback_transport features did not write a per-recipient
+	defer logfile record when the target delivery agent was
+	broken.  This the analog of queue manager bugfix 20051119.
+	Files: global/deliver_pass.c.
+	
+20051210
+
+	Cleanup: simplified the SMTP/LMTP connection management
+	logic for address list and fallback relay processing.
+	Still need to simplify deferred recipient handling.
+
+20051212
+
+	Bugfix: after a failed TLS session, the 20051210 SMTP client
+	code cleanup broke sessions with backup servers, causing the
+	client to get out of step with the backup server.  This in
+	turn exposed a one-year old missing exception handling
+	context in the EHLO handstake after sending STARTTLS. Victim
+	was Ralf Hildebrandt, detectives Victor Duchovni and Wietse.
+	File: smtp/smtp_proto.c.
+
+20051213 
+
+	Bugfix: *SQL, proxy and LDAP map types were not defined in
+	user-land commands such as postqueue. Leandro Santi. File:
+	postqueue/postqueue.c.
+
+20051212-14
+
+	Server-side plug-in interface for SASL authentication. This
+	uses Cyrus SASL by default, so nothing has changed except
+	error messages may be more informative.  Files:
+	smtpd/smtpd_sasl_proto.c smtpd/smtpd_sasl_glue.c,
+	xsasl/xsasl_server.[hc], xsasl/cyrus_server.[hc]
+	xsasl/cyrus_strerror.c, xsasl/cyrus_log.c, xsasl/cyrus_security.c.
+
+20051215
+
+	Portability: IRIX 6.5.28 defines sa_len as a macro, so it
+	can't be used as a variable identifier. Zach McDanel. Files:
+	dns/dns_rr_to_sa.c, smtpd/smtpd_peer.c, qmqpd/qmqpd_peer.c.
+
+20051216
+
+	Cleanup: removed some scar tissue that was introduced with
+	server-side SASL plug-in support. Files: smtpd_sasl_proto.c,
+	smtpd_sasl_glue.c.
+
+	Client-side plug-in interface for SASL authentication. This
+	uses Cyrus SASL by default, so nothing has changed except
+	error messages may be more informative.  Files: smtp_sasl_glue.c,
+	xsasl/xsasl_client.[hc], xsasl/cyrus_client.[hc].
+
+20051217
+
+	Bugfix: when a SASL client password is required by a specific
+	server, defer delivery when no server-announced mechanism
+	survives the smtp_sasl_mechanism_filter, instead of ignoring
+	the SASL announcement and trying to deliver the mail over
+	an unauthenticated connection and risking that mail will
+	be rejected.  File: smtp/smtp_sasl_proto.c, smtp/smtp_proto.c.
+
+	Portability: zero the "struct msg" just in case. Both purify
+	(Linux) and valgrind (FreeBSD) complain about uninitialized
+	bits.  Files: util/unix_{send,recv}_fd.c.
+
+20051219
+
+	Cleanup: generic smtpd_sasl_path, smtp_sasl_path and
+	lmtp_sasl_path configuration parameters; simplified the
+	SASL plug-in API, and made initial provisions for SASL
+	session encryption. Files: xsasl/*.[hc].
+
+	Feature: "postconf -a" lists the available SASL server
+	plug-in types, and "postconf -A" does the same for the
+	client.  Files: postconf.c, xsasl_{client,server}.c.
+
+	Feature: new SMTPD policy attributes "encryption_protocol",
+	"encryption_cipher" and "encryption_keysize", to distinguish
+	plaintext from encrypted connections.
+
+20051221
+
+	Privacy: the new Cyrus SASL server plug-in replaces "no
+	user" errors by "authentication failed" errors.  File:
+	xsasl/xsasl_cyrus_server.c.
+
+	Safety: the Postfix SMTP client no longer uses CNAME expanded
+	hostnames for logging, SASL password lookup, TLS policy
+	decisions, or TLS certificate verification.  Instead it
+	uses the name of the recipient domain, or the host or domain
+	name specified in Postfix configuration files. Of course
+	this won't prevent cheating with hostnames that appear in
+	MX lookup results. To avoid that you will have to suppress
+	MX lookups with explicit [hostname] entries in transport
+	maps. Files: dns/dns_lookup.c, dns/dns_rr.c.
+
+20051222
+
+	Feature: Dovecot SASL authentication (server side) plug-in
+	by Timo Sirainen. This builds without external library
+	dependencies and is therefore compiled in by default.
+	Files: xsasl/xsasl_dovecot_server.[hc].
+
+	Safety: set the default LANG=C, instead of deleting LANG
+	from the environment and assuming the right thing will
+	happen. File: global/mail_params.h.
+
+	Safety: always add the ISASCII() requirement to the ISXXX()
+	macros, because they are used for protocol and policy
+	enforcement.  File: util/sys_defs.h.
+
+	Bugfix: null pointer in the 20051219 policy delegation
+	crypto attributes.  File: smtpd/smtpd_check.c.
+
+	Compatibility: "resolve_numeric_domain = yes" will accept
+	addresses with numeric domains instead of rejecting them as
+	invalid. Files: trivial-rewrite/resolve.c, util/vstring.c.
+
+	Bugfix: 20051219 "postconf -A" produced "postconf -a" output.
+	Andreas Winkelmann.
+
+20051225
+
+	Bugfix: the regexp map cleverly avoided scanning constant
+	lookup results for non-existent $number expressions, but
+	failed to subject those results to the necessary $$ -> $
+	replacement. Files: util/dict_regexp.c.
+
+	Performance: the pcre map did not optimize constant lookup
+	results; they were always scanned for non-existent $number
+	expressions.  File: util/dict_pcre.c.
+
+	This round of edits eliminates architectural differences
+	between the pcre and regexp table implementations.  The
+	remaining difference is that regexp tables still support
+	the obsolete "/pattern1/!/pattern2/ action" syntax, for
+	backwards compatibility with Postfix 2.0 and earlier.
+
+20051227
+
+	Bugfix: the 20051222 ISASCII paranoia broke the strcasecmp()
+	workaround for Solaris. File: util/strcasecmp.c.
+
+	Bitrot: SunOS4 pre-dates size_t, ssize_t, getsid().  File:
+	src/util/sys_defs.h. The SunOS4 tests had been suspended
+	due to what turned out to be a broken AUI-to-UTP transceiver.
+
+	Bugfix: the 20061226 cosmetic change broke non-IPV6 support
+	(example: sockaddr_to_hostaddr: Unknown error: success).
+	File: util/myaddrinfo.c.
+
+20051229
+
+	The following workaround was removed 20060103.
+
+	Workaround: when mail is still queued after 3000 seconds,
+	the SMTP client no longer pipelines the DOT+QUIT commands.
+	The 20050929 paranoia about malformed server replies
+	eliminated a rare occurrence of "lost mail" with sites that
+	mis-implement DOT+QUIT pipelining, but resulted in a larger
+	occurrence of repeated deliveries to sites with a different
+	DOT+QUIT pipelining bug. The time threshold is set with the
+	smtp_dot_quit_workaround_threshold_time parameter.  Files:
+	smtp/smtp_proto.c, smtp/smtp.c.
+
+	Feature: mailbox_transport_maps and fallback_transport_maps
+	to search delivery transports by recipient name. Files:
+	local/mailbox.c, local/unknown.c.
+
+	Feature: the master daemon now logs a warning when all
+	servers are busy that may accept remote connections, and
+	suggests to either increase the process count or to reduce
+	the service time per client.  Files: master/master_ent.c,
+	master/master_avail.c.
+
+20051231
+
+	Bugfix: the anvil server would terminate after "max_idle"
+	seconds, even when this was less than the anvil_rate_time_unit
+	interval. File: anvil/anvil.c.
+
+20060102
+
+	Deleted the 20051229 dot-quit bug workaround.  Automatically
+	deferring delivery created "no delivery" and "repeated
+	delivery" problems; and automatically turning off pipelining
+	for delayed mail was a bad workaround for a bad workaround.
+	The administrator still has the option to turn off pipelining
+	by hand if loss of mail is a concern.
+
+20060103
+
+	Bugfix: the 20051217 fix (when a SASL client password is
+	found, defer delivery when no server-announced mechanism
+	survives the smtp_sasl_mechanism_filter) did the mechanism
+	test too early, so that it could trip up with deliveries
+	to servers that we don't have a SASL password for.  Files:
+	smtp/smtp_sasl_proto.c, smtp/smtp_proto.c.
+
+20060104
+
+	Safety: new "smtp_cname_overrides_servername" parameter.
+	The default value ("no") is NOT backwards compatible. This
+	avoids surprises with the hostname that is used for logging,
+	SASL password lookup, TLS policy decisions, or TLS certificate
+	verification.  The change makes the 20051221 behavior more
+	configurable.  Files: smtp/smtp_addr.c, smtp/smtp_connect.c,
+	proto/postconf.proto.
+
+20060105
+
+	Cleanup: removed the unused DSN "code" attribute; removed
+	surrogate SMTP replies for errors that were not reported
+	by a remote SMTP server, making several DSN-related functions
+	and macros redundant; cleaned up some bizarre code for DSN
+	attribute memory management in the SMTP client.
+
+20060106
+
+	Cleanup: eliminated the global smtp_errno variable, which
+	had become redundant after introducing DSN support. Files:
+	smtp/smtp_addr.c, smtp/smtp_connect.c.
+
+20060107
+
+	Cleanup: removed more bizarre code for DSN attribute memory
+	management in the queue manager, bounce server, and in
+	delivery agents.
+
+20060109
+
+	Bugfix: smtp_sasl_tls_opts was unimplemented. File:
+	smtp/smtp_sasl_proto.c.
+
+	Cleanup: more bounce logfile code cleanup.  Files:
+	global/bounce_log.c, bounce/bounce_notify_util.c,
+	bounce/bounce.c, bounce/bounce_notify_verp.c,
+	bounce/bounce_one_service.c, showq/showq.c
+
+20060110
+
+	Cleanup: more bounce logfile code cleanup.  Files:
+	global/bounce_log.c, bounce/bounce_notify_util.c.
+
+	Bugfix: the VERP bouncer never handled the case of a missing
+	bounce logfile. Found while doing more logfile code cleanup.
+	File: bounce/bounce_notify_verp.c.
+
+	Feature: smtp_sasl_tls_verified_security_options for
+	connections where the server certificate passed verification.
+	The default value is $smtp_sasl_tls_security_options, which
+	in turn defaults to $smtp_sasl_security_options.
+
+20060111
+
+	Optimization: mystrdup() and mystrndup() now return a pointer
+	to a fixed read-only memory location instead of allocating
+	memory for zero-length null-terminated strings.  This saves
+	lots of memory for unused recipient attributes. If this
+	change causes problems (for example, you have an ancient
+	sscanf() implementation that writes to its input) then
+	compile Postfix with -DNO_SHARED_EMPTY_STRINGS.
+
+	Cleanup: eliminated null pointer members in DSN structures.
+	Instead we now use the optimized mystrdup() for empty
+	strings. For safety sake we keep the tests for null pointers
+	in input, but we always produce empty strings on output.
+	Files: global/dsn.c, global/dsn.h, global/dsn_buf.h,
+	global/dsn_print.c.
+
+	Cleanup: eliminated ad-hoc code for passing recipients in
+	the queue manager delivery request protocol. Postfix now
+	uses proper object activation/passivation instead. Files:
+	*qmgr/qmgr_deliver.c, global/deliver_request.c,
+	global/deliver_pass.c.
+
+20060112
+
+	Feature: to simplify debugging the bounce server logs the
+	old and new queue ID when notifying the sender or postmaster.
+	Files: global/post_mail.c, bounce/bounce_notify_service.c,
+	bounce/bounce_one_service.c, bounce/bounce_notify_verp.c,
+	bounce/bounce_warn_service.c, bounce/bounce_trace_service.c.
+
+	Fudge: when translating recipient DSN codes into sender DSN
+	codes, map sender address problems that have no DSN code
+	to *.1.7 (Bad sender's mailbox address syntax) instead of
+	*.1.0 (Other address status) because that loses the distinction
+	between sender and recipient. File: smtpd/smtpd_dsn_fix.c.
+
+20060113
+
+	Cleanup: preserve upper case information of address localpart
+	or extension when mapping one address to another with
+	non-regexp/pcre tables.  Files: global/mail_addr_find.c,
+	global/maps_find.c.
+
+20060115
+
+	Bugfix: don't ignore the per-site policy when SSL library
+	initialization fails. Introduced after adopting the TLS
+	patch. File: smtp/smtp_session.c.
+
+20060117
+
+	[withdrawn 20060126] Safety: daemon processes that need no
+	privileges now insist that they are configured to run without
+	privileges.  Files: master/single_server.c, master/multi_server.c,
+	master/trigger_server.c.
+
+	Cleanup: preserve upper case information of address localpart
+	or extension when mapping addresses via regexp/pcre tables.
+	This requires that Postfix does not case fold the search
+	string when searching regexp or pcre tables, so that $number
+	substitutions produce the expected result.
+
+	In order to get a consistent handling of table operations,
+	the search string case folding logic was moved from the
+	application to the individual lookup table modules; the
+	application specifies its case folding preference when it
+	opens a table, and the table folds the search or update
+	string as needed.
+
+	Files: everything that opens a map or multiple maps (to
+	specify the case folding preference), and everything that
+	contained ad-hoc code to lowercase search strings (which
+	is no longer needed).
+
+	Bugfix: as a side effect of this revision of all code that
+	opens tables, the postmap/postalias -n/-N options are no
+	longer silently ignored when the -q (query) and -d (delete)
+	options are specified.  Files: postmap/postmap.c,
+	postalias/postalias.c.
+
+	Safety: don't allow $number substitution in transport maps
+	or sender-dependent relayhost maps.
+
+	Cleanup: smtp_sasl_passwd_maps lookup keys are folded to
+	lowercase before searching tables such as btree:, dbm: or
+	hash: that have fixed-case fields. File: smtp/smtp_sasl_glue.c.
+
+	Bugfix: per-sender relayhost maps were not locked for shared
+	access.
+
+20060119
+
+	Cleanup: don't look up parent domain substrings in regexp/pcre
+	like tables while searching a hostname in a domain/namaddr_list.
+	File: util/match_ops.c.
+
+20060120
+
+	Cleanup: multiple boolean variables were replaced by a
+	single TLS enforcement level (none, may, encrypt, verify).
+	With Victor Duchovni. Files: smtp_session.c, smtp_proto.c,
+	smtp.h.
+
+	Cleanup: the SMTP per-site policy table was re-implemented
+	in terms of enforcement levels instead of multiple boolean
+	variables. This greatly simplified the code and led to the
+	elimination of non-intuitive behavior as documented next.
+	With Victor Duchovni. Files: smtp_session.c, smtp.h.
+
+	Bugfix: a TLS per-site MUST_NOPEERMATCH policy could not
+	override a main.cf MUST (with peer match) policy, while a
+	per-site NONE policy could.
+
+	Bugfix: a combined TLS per-site (host, next-hop) policy of
+	(NONE, MAY) would change the strongest main.cf MUST policy
+	into NONE, while it changed all weaker main.cf policies
+	into MAY.  The result is now NONE for all main.cf policy
+	settings.
+
+20060123
+
+	Feature: recipient_count attribute in SMTPD policy protocol.
+	This is available only in the DATA and END-OF-MESSAGE stage.
+	Based on code by Guo Black. Files: smtpd_check.c.
+
+	Cleanup: renamed MUMBLE_NUM to MUMBLE_INT to make type
+	discrepancies more explicit.
+
+	Bugfix: change 20051208 broke when a connection could not
+	be established. File: util/auto_clnt.c.
+
+20060124
+
+	Bugfix: the virtual(8) delivery agent did not insist on
+	privileged operation as it should; this broke change 20060117.
+	Ralf Hildebrandt.  File: virtual/virtual.c.
+
+	Bugfix: the TLS sasl security options (change 20060110)
+	should also be #ifdef USE_TLS, and not only #ifdef
+	USE_SASL_AUTH.  Such feature interference is difficult to
+	find in testing.  Liviu Daia. File: smtp/smtp_sasl_proto.c.
+
+20060126
+
+	Undo: change 20060117 (unprivileged operation test) broke
+	"sendmail -bs", "postconf -b", "postconf -t", and probably
+	more. Files: master/{single,multi,trigger}_server.c.
+
+20060130
+
+	Bugfix: an empty remote_header_rewrite_domain value caused
+	trivial-rewrite to dereference a null pointer, but only in
+	regression tests, not in production. Envelope addresses are
+	by definition rewritten in the local domain context, because
+	an address without domain is equivalent to an address in
+	the local domain; and header addresses are rewritten in the
+	remote context only when remote_header_rewrite_domain is
+	non-empty.  File: trivial-rewrite/rewrite.c.
+
+20060131
+
+	Cleanup: regression tests are now separated into "make
+	tests" for unprivileged tests, and "make root_tests" for
+	tests that require privileges to connect to the Postfix
+	internal sockets. Files Makefile.in, src/*/Makefile.in.
+
+20060201
+
+	Bugfix: despite efforts to treat malformed domain names as
+	hard errors (change 20050726) they were still processed as
+	soft errors. File: dns/dns_lookup.c.
+
+20060203
+
+	Bugfix: smtpd core dump when SASL was compiled in, turned
+	off (smtpd_sasl_auth_enable = no) and permit_sasl_authenticated
+	was specified in local_header_rewrite_clients. Victor
+	Duchovni.  File: smtpd/smtpd_check.c.
+
+	Cleanup: don't complain about useless SASL or TLS "permit"
+	restrictions when SASL or TLS aren't compiled in, but do
+	reject mail when reject_plaintext_session is specified while
+	TLS isn't compiled in. File: smtpd/smtpd_check.c.
+
+20060204
+
+	Bugfix: disable the content_filter feature for user-requested
+	"sendmail -bv" probes, just like it is disabled for probes
+	generated by Postfix itself.  File: *qmgr/qmgr_message.c.
+
+20060207
+
+	Robustness: place the "do we have TLS" guards within method
+	implementations, instead of putting them around method
+	invocations.  File: smtpd/smtpd_check.c.
+
+	Bugfix: duplicate the cleanup(8) DSN envelope ID syntax
+	check in smtpd(8), so that clients get better error replies.
+	File: smtpd/smtpd_check.c.
+
+	Bugfix: change 20060203 broke the reject_plaintext_session
+	feature.
+
+	The trivial-rewrite and proxymap multi-server processes now
+	terminate soon after all their clients disconnect, instead
+	of waiting for another 100 seconds. This allows the processes
+	to refresh more frequently on low-traffic systems.
+
+	Cleanup: smtpd_delay_open_until_valid_rcpt (default: yes)
+	controls whether Postfix delays the start of a mail transaction
+	until after the first valid recipient, or if it starts a
+	transaction immediately after MAIL FROM. File: smtpd/smtpd.c.
+
+20060217
+
+	Bugfix: don't terminate with a non-standard exit status
+	when the pipe-to-command feature has a problem before it
+	executes the command. File: global/pipe_command.c.
+
+20060223
+
+	Bugfix: detect integer overflow when multiplying time values
+	with non-trivial time units. File: global/conv_time.c.
+
+20060307
+
+	Bugfix: reset the msg_cleanup() fatal error handler in child
+	processes. See also change 20060217. Files: postlock/postlock.c,
+	master/multi_server.c, global/mail_run.c, util/vstream_popen.c.
+
+20060310
+
+	Bugfix: the MIME processor assumed that input was null
+	terminated. This broke with CRLF input to the "sendmail -t"
+	command  in Postfix 2.1 and later (see change 20030416).
+	Found by Leandro Santi.  Based on patch by Victor Duchovni.
+	Files: global/mime_state.c, global/is_header.c.
+
+20060313
+
+	Cleanup: the message arrival time (start of the receive
+	transaction) no longer controls message expiration or
+	delivery attempts.  Instead, expiration and delivery are
+	now controlled by the time when the cleanup server creates
+	a queue file.  This closes a problem that was introduced
+	with the 20051104 change that introduced higher-resolution
+	delay time keeping: as a result, "postsuper -r" could no
+	longer manipulate the mail expiration schedule, so that
+	mail "on hold" could expire too soon.
+
+20060315
+
+	Workaround. the PCRE library reports an inappropriate error
+	code (invalid substring) when $number refers to a valid ()
+	expression that matches the null string. This caused fatal
+	run-time errors.  File: dict_pcre.c.
+
+20060324
+
+	Cleanup: eliminated name collisions between global and local
+	variables, and other forms of shadowing. Documented switch
+	fall-throughs with /* FALLTHROUGH */ where this wasn't
+	already done.  Replaced (var = expr) by (var = expr) != 0
+	where this wasn't already done.
+
+20060324
+
+	Bugfix: mis-placed parenthesis in a before-filter error
+	test. A filter timeout was mis-reported as lost connection.
+	Found in code review.  File: smtpd/smtpd_proxy.c.
+
+20060327
+
+	Cleanup: the SQL and LDAP clients now log a warning when
+	they skip an empty lookup result, so that humans don't have
+	to wonder why Postfix doesn't find all the database entries.
+	File: global/db_common.c.
+
+	Moved SMTP/LMTP parameter initialization from global/mail_params.c
+	to the combined smtp/lmtp delivery agent. Added missing
+	lmtp parameters.
+
+20060328
+
+	Feature: configurable chroot directive for the pipe(8)
+	delivery agent, by Przemyslaw Wegrzyn. Files:
+	global/pipe_command.c, pipe/pipe.c.
+
+	Bugfix: cut-and-paste error: lmtp_connection_cache_limit
+	was left with the name of smtp_connection_cache_limit.
+	Reported by Victor? File: src/global/mail_params.h.
+
+20060329
+
+	More extensible interface for TLS client/server library,
+	now passes property structures that combine all the relevant
+	parameters in one type-safe structure.
+
+	TLS session cache activity logging now takes place at TLS
+	log level 2 or greater.
+
+20060403
+
+	Cleanup: made fcntl/flock handling consistent with respect
+	to EINTR (reported by Carlo Contavalli). However, Postfix
+	is not meant to be signal safe.  Only the master daemon
+	handles signals without terminating, and it uses only a
+	small subset of Postfix library routines. File: util/myflock.c.
+
+	Bugfix: the pipe-to-command error message was lost when the
+	command could not be executed. File: global/pipe_command.c.
+
+20060404
+
+	Bugfix in sanity check: after reading a record from the
+	address verification database, a sanity check did not reject
+	a record with all-zero time stamp fields.  Such records are
+	never written; the test is there just in case something is
+	broken, so that Postfix will not blindly march on and create
+	chaos. The sanity check tested pointer values, instead of
+	dereferencing the pointers.  Found by Coverity.  File:
+	verify/verify.c.
+
+	Bugfix in sanity check: when the maildir delivery routine
+	opens an output file it looks up the file attributes via
+	the file handle it just got.  There is a sanity check that
+	detects if the attribute lookup fails, an error that never
+	happens. The code that handles the impossible error did not
+	close the output file. This would cause a virtual or local
+	delivery agent to waste up to 100 file descriptors.  But
+	for that error to happen the system would have to be so
+	sick that you would have more serious problems than a file
+	descriptor leak.  Found by Coverity.  Files: local/maildir.c,
+	virtual/maildir.c.
+
+20060405
+
+	Bugfix: the MIME parser assumed input is null terminated
+	when reporting errors. Fix by Leandro Santi. Files:
+	global/mime_state.c, cleanup/cleanup_message.c.
+
+20060411
+
+	Bugfix: the SMTP server logged no warning when for some
+	reason the TLS engine was unavailable in wrappermode. Victor
+	Duchovni.  File: smtpd/smtpd.c.
+
+20060417
+
+	Cleanup: when SMTP access table lookup fails, reply with
+	4xx instead of aborting with a fatal run-time error. The
+	old behavior assumes local file access, and is inappropriate
+	with deployment of LDAP and SQL tables. File: smtpd/smtpd_check.c.
+
+20060423
+
+	Bugfix: postcat did not print the attribute value of records
+	containing a named attribute. File: postcat/postcat.c.
+
+20060430
+
+	Bugfix: dangling pointer in a function that has no caller.
+	Found by Coverity. File: tls/tls_prng_exch.c.
+
+	Bugfix: the workaround for CA-2003-07 (Sendmail) did not
+	null terminate the address before logging a warning. Reported
+	by Kris Kennaway. File: global/tok822_parse.c.
+
+20060301-20060515
+
+	Sendmail 8 Milter support, distributed across the smtpd(8)
+	server for SMTP commands, and the cleanup(8) server for
+	content inspection and manipulation. The code supports all
+	requests to add/delete recipients, and to add/delete/replace
+	message headers, but does not yet support requests to replace
+	the message body.  See MILTER_README for more. Files:
+	smtpd/smtpd.c, smtpd/smtpd_milter.c, cleanup/cleanup_api.c,
+	cleanup/cleanup_envelope.c, cleanup/cleanup_extracted.c,
+	cleanup/cleanup_milter.c, milter/milter.c, milter/milter8.c.
+
+	That's 89 lines in smtpd, 1010 lines in cleanup, and 2449
+	lines of library support, comments not included.  
+
+	A simple test Milter application for use in regression tests
+	is in src/milter/test-milter.c. Queue file modifications are
+	tested with a driver at the end src/cleanup/cleanup_milter.c
+	that reads commands from a script.
+
+	To make debugging easier, uncomment the "#define msg_verbose
+	2" lines at the top of cleanup_milter.c or milter8.c. This
+	produces logging without making everything else verbose.
+
+20060510
+
+	Preliminary TLS_README and postconf(5) changes completed.
+	Victor Duchovni.
+
+	Added smtp_tls_policy_maps and smtp_tls_protocols features
+	to the smtp/lmtp client, changed smtp_tls_cipherlist to
+	only apply when TLS is mandatory. Victor Duchovni.
+
+20060512
+
+	Destinations that share a common server may have distinct
+	TLS protocol and cipherlist requirements, with mandatory
+	TLS add the protocol and cipherlist values to the TLS session
+	lookup key. Victor Duchovni.
+
+20060516
+
+	Portability: __float80 alignment, by Albert Chin.  File:
+	util/sys_defs.h.
+
+	Further testing of Milter support uncovered typos; a missing
+	null pointer test while cleaning up after content miltering;
+	the need for a workaround to not bounce+delete local
+	submission after it triggers a temporary reject Milter
+	action.
+
+	Workaround: don't bounce+delete a local submission after
+	it triggers a "reject 4.x.x" action in header/body_checks.
+	This means an SMTP client now sees "queue file write error"
+	instead of the text from the "reject 4.x.x text" action.
+	File: cleanup/cleanup_message.c.
+
+	Workaround: OpenSSL 0.9.8[ab] with zlib support interoperability
+	problem. Victor Duchovni. Files: tls/tls_client.c,
+	tls/tls_misc.c, tls/tls_server.c.
+
+	Added smtpd_tls_protocols parameter to complement
+	smtp_tls_protocols. Victor Duchovni.
+
+20060517
+
+	The smtp_tls_policy_maps table now implements parent domain
+	matching for destinations that are bare domains (without
+	enclosing [] or optional :port suffix). This allows one to
+	set TLS policy for a domain and all sub-domains. Victor
+	Duchovni.
+
+20060519
+
+	The same parameter can bind to different variables in
+	different daemons. Ignore the variable name when eliminating
+	duplicates in extract.awk. Victor Duchovni.
+
+20060523
+
+	Improved handling of smtp_tls_protocols and smtpd_tls_protocols,
+	names now processed via name_mask(3) and canonicalized prior
+	to use in the SMTP/LMTP client TLS session lookup key. Also
+	simplifies the corresponding code in the TLS driver. Victor
+	Duchovni.
+
+20060524
+
+	Cleanup: send ETRN command parameter when using check_policy
+	in the context of an ETRN command. Joshua Goodall. File:
+	smtpd/smtpd_check.c.
+
+20060601
+
+	Bugfix (bug introduced 20051118): permit_mx_backup authorized
+	domains without secondary MX records.  Joshua Goodall. File:
+	smtpd/smtpd_check.c.
+
+20060601
+
+	Fixed default value of LMTP TLS client certificate parameters,
+	using the SMTP values as a default was wrong. Victor Duchovni.
+
+20060603
+
+	Different transports may have different CAfile or CApath
+	settings. We need to add the transport name to the TLS
+	session lookup key so that sessions verified with one set
+	of trusted roots are not inadvertantly considered verified
+	for another. Victor Duchovni.
+
+20060604
+
+	Cleanup: minor fluff found with the BEAM source code analyzer.
+	Files: global/quote_821_local.c, global/quote_822_local.c,
+	master/master_spawn.c, pickup/pickup.c, util/match_ops.c,
+	util/safe_open.c, xsasl/xsasl_cyrus_client.c.
+
+20060606
+
+	Safety: mail receiving daemons (smtpd, qmqpd) now pass
+	actual client name/address/helo attributes in addition to
+	the attributes used for logging (xforward). This prevents
+	Milter applications from treating qmqpd mail as if it
+	originated locally, and prevents incorrect Milter decisions
+	after "postsuper -r". Files: smtpd/smtpd.c, qmqpd/qmqpd.c,
+	cleanup/cleanup_envelope.c, cleanup/cleanup_milter.c,
+	cleanup/cleanup_state.c, global/post_mail.c, *qmgr/qmgr_message.c,
+	*qmgr/qmgr_deliver.c, global/deliver_request.c,
+	global/deliver_pass.c, local/forward.c.
+
+	Bugfix: qmgr panic after queue file corruption by Mailscanner.
+	Files: *qmgr/qmgr_message.c.
+
+	Bugfix: XCLIENT didn't work with smtpd_delay_reject=no
+	(problem reported by Joshua Goodall).  To make XCLIENT work
+	correctly with built-in restrictions and with Milter
+	applications, the SMTP server now jumps back to the very
+	start (the 220 phase) of an SMTP session.  File: smtpd/smtpd.c.
+
+20060606
+
+	Portability: Some systems no longer support the traditional
+	"sort +0 -2 +3". Victor Duchovni.
+
+20060607
+
+	Portability: Found by BEAM static code analyzer. SSL options
+	(long) were stored as int.
+
+20060610
+
+	Cleanup: XCLIENT and XFORWARD attribute values are now sent
+	as xtext encoded strings. For backwards compatibility,
+	Postfix will still accept unencoded attribute values.  Files:
+	smtpd/smtpd.c, smtpd/smtpd_proxy.c, smtp/smtp_proto.c.
+
+20060611
+
+	Robustness: additional sanity checks for common database
+	routines. Viktor Dukhovni. File: global/db_common.c.
+
+	Portability: LDAP 2.3 API support. Viktor Dukhovni. File:
+	global/dict_ldap.c.
+
+	Security: the PostgreSQL client was updated after the
+	PostgreSQL developers made major database API changes in
+	response to PostgreSQL security issues. This breaks support
+	for PGSQL versions prior to 8.1.4, 8.0.8, 7.4.13, and 7.3.15.
+	Support for these requires major code changes which are not
+	possible in the time that is left for the Postfix 2.3 stable
+	release.
+
+	Specific PostgreSQL client changes: use connection-aware
+	quoting, and more robust PQexec() result handling.  Previous
+	versions of the dict_pgsql driver didn't check the status
+	of the result pointer, and certain exceptional events can
+	be mis-interpreted as an empty result set.  Fixes by Leandro
+	Santi. File: global/dict_pgsql.c.
+
+20060612
+
+	Changed smtp security level parsing and level->name conversion
+	to use name_code(3). Victor Duchovni.
+
+	Implemented new smtp_tls_security_level parameter, to replace
+	the unnecessarily complex smtp_use_tls, smtp_enforce_tls
+	and smtp_tls_enforce_peername parameters. The main.cf
+	security level settings are now consistent with the new
+	policy table. Victor Duchovni.
+
+	The smtp_sasl_tls_verified_security_options feature is not
+	yet complete, added #ifdef SNAPSHOT and changed documentation
+	to delay introduction until Postfix 2.4. Victor Duchovni.
+
+20060614
+
+	Merged in Victor's work including the new TLS policy table
+	and a complete set of configuration parameters for the LMTP
+	personality of the unified SMTP/LMTP client.
+
+	Allow mandatory TLS encryption with LMTP over UNIX-domain
+	sockets. Victor Duchovni.
+
+	Safety: improved code to avoid I/O on connections after the
+	TLS handshake fails. Victor Duchovni.
+
+20060615
+
+	Cosmetic patch for const strings. Stefan Huehner.
+
+	Other cosmetic changes, mainly whitespace.
+
+20060616
+
+	The qshape.pl script was updated for the pointer records
+	that were introduced to support message content modification
+	by Milter applications. Victor Duchovni.
+
+20060620
+
+	Feature: Substantially better cipherlist specification
+	interface and support for anonymous ciphers when certificates
+	are not needed. The primary interface in main.cf and the
+	policy table selects one of 5 grades for mandatory TLS with
+	smtp(8) or lmtp(8) or for all TLS sessions with smtpd(8).
+	The levels are "high", "medium" (or better), "low" (or
+	better), "export" (or better) and "null".  The underlying
+	definitions of these levels are configurable, but users are
+	strongly encouraged to not change those definitions. Victor
+	Duchovni.
+
+20060626
+
+	Bugfix: the Milter reply syntax checker was off by one.
+	File: milter/milter8.c.
+
+	Workaround: disable SMTP connection cache lookup by server
+	IP address when the tls_per_site policy table is enabled.
+	This is a workaround for a shortcoming in the SMTP connection
+	cache implementation, which retrieves the server hostname
+	from the cached connection. Since this server name is not
+	obtained in a secure manner, it must not be allowed to
+	control the tls_per_site policy. File: smtp/smtp_reuse.c.
+
+20060627
+
+	Cleanup: mumble_mandatory_tls_mumble parameters renamed to
+	mumble_tls_mandatory_mumble; added _mandatory_ qualifier
+	to names of parameters that affect only mandatory TLS.
+
+20060630
+
+	Features promoted from SNAPSHOT to STABLE: the "sleep"
+	pseudo restriction; Postfix daemons now read the local
+	timezone file before chrooting; trivial-rewrite now detects
+	table changes every 10 seconds, so it restarts more timely.
+
+	Features that stay #ifdef SNAPSHOT: tcp_table,
+	lmtp_sasl_tls_verified_security_options, and
+	smtp_sasl_tls_verified_security_options.
+
+	Compatibility: Sendmail does not send its own Received:
+	header to Milter applications. Offsets in header replace
+	requests are relative to the message content as received
+	(i.e. without our own Received: header), while offsets in
+	header insert requests are relative to the message as
+	delivered (i.e. they include our own Received: header).
+	This explains why dk-filter would sign our own Received:
+	header but place the signature between our own Received:
+	header and the rest of the message, violating the draft
+	domainkeys spec.
+
+20060702
+
+	Cleanup: more graceful handling of queue file read/write
+	errors while processing milter message modification requests.
+	Files: cleanup/cleanup_milter.c, milter/milter8.c.
+
+20060703
+
+	Debugging: the Postfix milter client gives more context
+	when it experiences trouble while talking to an uncooperative
+	Milter application. File: milter/milter8.c.
+
+	Compatibility: with OpenBSD 2.7 and later, the alias file
+	is now in /etc/mail/aliases.
+
+20060704
+
+	Bugfix: the Milter client skipped zero-length body lines.
+	File: milter/milter8.c.
+
+	Feature (just this one): RFC 3834 "Auto-Submitted:" message
+	header in DSNs.  File: bounce/bounce_notify_util.c.
+
+20060705
+
+	Portability: LP64 systems required a few ssize_t->int casts
+	in debug logging statements.  Files: milter/test_milter.c,
+	cleanup/cleanup_milter.c.
+
+	Cleanup: comments, error messages, and crumbling interfaces.
+
+20060707
+
+	Workaround: apparently, Solaris gettimeofday() can return
+	out-of range microsecond values.  File: src/global/log_adhoc.c.
+
+	Robustness: the SMTPD policy client now encodes the
+	ccert_subject and ccert-issuer attributes as xtext.  Some
+	characters are replaced by +XX, where XX is the two-digit
+	hexadecimal code for the character value.  File:
+	smtpd/smtpd_check.c.
+
+	Safety: the SMTP/LMTP client now defers delivery when a
+	SASL password exists, but the server does not offer SASL
+	authentication. Mail could be rejected otherwise. This may
+	become an issue now that Postfix retries delivery in plaintext
+	after an opportunistic TLS handshake fails. Specify
+	"smtp_sasl_auth_enforce = no" to deliver mail anyway.  File:
+	smtp/smtp_proto.c. See workaround 20060711 for sender-dependent
+	SASL passwords. This was undone with the 20060719 workaround.
+
+20060709
+
+	Cleanup: the new single smtpd_tls_security_level parameter
+	obsoletes the multiple smtpd_use_tls and smtpd_enforce_tls
+	parameters. This is done for consistency with the Postfix
+	SMTP client. In the Postfix SMTP server, the levels "verify"
+	and "secure" are currently not applicable, and are treated
+	as "encrypt", after logging a warning. Files: smtpd/smtpd.c,
+	tls/tls_level.c, smtp/smtp_session.c.
+
+	Compatibility: don't send the first (blank) body line to
+	Milter applications.  This broke domain key etc. signatures
+	when verified by non-Postfix MTAs.  File: milter/milter8.c.
+
+20060710
+
+	Cleanup: more consistency between smtpd(8) and smtp(8) TLS
+	configuration interfaces: smtpd_tls_mandatory_exclude_ciphers,
+	smtpd_tls_mandatory_ciphers, smtpd_tls_mandatory_protocols.
+	By Victor. Files:smtpd/smtpd.c.
+
+	Cleanup: to support domainkey signing of bounces and
+	Postmaster notices, enable content inspection of Postfix-
+	generated mail with the new internal_mail_filter_classes
+	feature.  This is disabled by default, because it is not
+	yet safe enough. Files: global/int_filt.[hc] and everything
+	that calls post_mail_fopen*().
+
+20060711
+
+	Cleanup: smtpd_tls_mumble -> smtpd_tls_mandatory_mumble,
+	and finer control over the Postfix SMTP server TLS ciphers,
+	all this for consistency with the same functionality in the
+	Postfix SMTP client. Victor Duchovni.
+
+	Compatibility: Sendmail's milter client handles whitespace
+	after the header label and ":" in an interesting manner.
+	It eats one space (not tab). File: milter/milter8.c.
+
+	Workaround: if sender-dependent SASL passwords are enabled,
+	don't defer delivery when a SASL password exists but the
+	server doesn't announce SASL support. File: smtp/smtp_proto.c.
+	This was undone with the 20060719 workaround.
+
+	Cleanup: format of cleanup milter reject messages.  File:
+	cleanup_milter.c.
+
+	Bugfix: file/memory leak if a transfer of multiple milters
+	from smtpd to cleanup broke in the middle.  Found by Coverity.
+	File: milter/milter.c.
+
+20060716
+
+	Bugfix: "sendmail -bs" panic caused by a missing
+	SMTPD_STATE_ALONE() guard before a milter_abort() call.
+	File: smtpd/smtpd.c.
+
+	Bugfix (bug introduced with Postfix 2.2): the Postfix SMTP
+	client enforced Mandatory TLS only when talking to an ESMTP
+	server; enforcement did not happen if Postfix could somehow
+	be forced to send HELO instead of EHLO.  Victor Duchovni.
+	File: src/smtp/smtp_proto.c.
+
+20060718
+
+	Bugfix (bug introduced 20060711): null pointer bug when
+	rejecting SMTP mail with Milter application.  File:
+	cleanup/cleanup_milter.c.
+
+	Workaround (problem introduced in 200605/200606 TLS update):
+	the Postfix SMTP server now issues TLS session IDs even
+	when TLS session caching is turned off, otherwise MS Outlook
+	fails to deliver mail. There may also be interoperability
+	issues with other MTAs that we haven't discovered yet.
+	Specify "smtpd_tls_always_issue_session_ids = no" to disable
+	the workaround. Victor Duchovni. Files: smtpd/smtpd.c,
+	tls/tls_server.c.
+
+20060719
+
+	Cleanup: the smtp_sasl_auth_enforce feature is gone. It was
+	meant to work around a problem that was introduced with
+	plaintext fallback after a failed TLS handshake.  Unfortunately,
+	it created more problems than it solved. We now address the
+	underlying problem more directly as described next. File:
+	smtp/smtp_proto.c.
+
+	Safety: don't fall back to plaintext delivery after failed
+	TLS handshake, when the Postfix SMTP client would have
+	attempted to log in with SASL after successful TLS handshake.
+	This avoids undesirable behavior regardless of whether the
+	server does support SASL over plaintext (unexpected password
+	disclosure) and whether the server doesn't support SASL
+	over plaintext (insufficient mail relay permission).  Files:
+	smtp/smtp_connect.c, smtp/smtp_session.c, smtp/smtp_proto.c.
+
+20060720
+
+	Compatibility: replace %% in milter replies by %, and strip
+	single (i.e. invalid) % characters. File: milter/milter8.c.
+
+	Compatibility: $_ macro support for Milter applications.
+	Files: smtpd/smtpd.c, smtpd/smtpd_milter.c,
+	cleanup/cleanup_state.c, cleanup/cleanup_milter.c.
+
+20060721
+
+	Safety: disable Milter processing after "postsuper -r".  If
+	the mail has been filtered there is no need to do it again.
+	Moreover, when mail has passed through an external content
+	filter, we don't have sufficient information to reproduce
+	the exact same SMTP events and Sendmail macros that Milters
+	received when the mail originally arrived in Postfix.  This
+	change does not affect Milter applications that run behind
+	an after-queue content filter. File: pickup/pickup.c.
+
+	Bugfix: Milters received a truncated ORCPT=xxx parameter
+	due to destructive parsing of something that didn't have
+	to be preserved before Milter support was added to Postfix.
+	File: smtpd/smtpd.c.
+
+20060724
+
+	Bugfix: when updating the same header multiple times, the
+	Postfix Milter client created a queue file that caused
+	delivery agents to loop.  File: cleanup/cleanup_milter.c.
+
+20060725
+
+	Bugfix: damaged queue file record after a Milter request
+	to modify a message header when 1) it was the last header
+	in the unmodified message, and 2) the old header was less
+	than 15 characters long.  File: cleanup/cleanup_milter.c.
+
+	Bugfix: don't panic in smtp_rcpt_cleanup() after detecting
+	a damaged queue file record. File: smtp/smtp_proto.c.
+
+20060726
+
+	Bugfix: the 20051013 change to enforce the message size
+	limit in the SMTP server didn't work for size limits close
+	enough to INT_MAX. File: smtpd/smtpd.c.
+
+	Bugfix (introduced Postfix 2.3): after an SMTP client was
+	rejected with "smtpd_delay_reject = no", the SMTP server
+	would panic as it generated spurious Milter requests for
+	unrecognized commands.  File: smtpd/smtpd.c.
+
+20060727
+
+	Cleanup: change redundant milter_abort() and milter_disc_event()
+	calls into NO-OPs.  This avoids unnecessary panic() events
+	for completely harmless conditions.  File: milter/milter8.c.
+
+20060805
+
+	Bugfix (introduced Postfix 2.3): #ifdef damage caused
+	smtp_sasl_start() to be invoked twice. Reported by C-J
+	Lofstedt. File: smtp/smtp_sasl_proto.c.
+
+20060806
+
+	Postfix no longer announces its name in delivery status
+	notifications.  Users believe that Wietse provides a free
+	helpdesk service that solves all their email problems.
+	Credits to Jonathan Balester.  File: bounce/bounce_templates.c.
+
+20060807
+
+	Bugfix (introduced Postfix 2.2): when upgrading from Postfix
+	< 2.2 with the third-party TLS patch, the post-install
+	upgrade procedure didn't put a "?" in the existing tlsmgr
+	entry, causing tlsmgr to repeatedly start and exit when TLS
+	support was not compiled in.  File: conf/post-install.
+
+20060812
+
+	Bugfix (introduced < Postfix alpha): safety mechanism in
+	mail_date() didn't work.  Found in code review.  File:
+	global/mail_date.c.
+
+20060817
+
+	Test programs for host address->name and name->address
+	lookups to debug name service inconsistencies, typically
+	when the Postfix SMTP server claims that a hostname is
+	"unknown".  Files: auxiliary/name-addr-test/*.
+
+20060822
+
+	Added missing logging for "message to large" etc.  Files:
+	smtpd/smtpd.c, cleanup/cleanup_milter.c.
+
+20060823
+
+	Bugfix (introduced Postfix 2.2): segfault when vstream_fclose()
+	attempted to flush unwritten output, after vstream_fdclose()
+	had already disconnected the stream from its file descriptor.
+	File: util/vstream.c.
+
+	Bugfix (introduced Postfix 2.2): vstream_fdclose() did not
+	flush unwritten output before disconnecting a stream from
+	its file descriptor(s).  File: util/vstream.c.
+
+	Feature: smtp-sink can capture mail to file, either as one
+	individual message per file, or as multiple messages per
+	file.  After an initial implementation by Weidong Cui. File:
+	smtpstone/smtp-sink.c.
+
+	Bugfix (introduced < Postfix alpha): smtp-sink did not
+	correctly recognize DOT-CR-LF immediately after DATA. File:
+	smtpstone/smtp-sink.c.
+
+	Cleanup: smtp-sink now requires that MAIL FROM, RCPT TO and
+	DATA be send in the correct order. This simplified the
+	implementation of the capture to file feature. File:
+	smtpstone/smtp-sink.c.
+
+20050824
+
+	Portability: inside functions, GCC 4 refuses forward
+	declarations of static functions.  File: smtpstone/smtp-sink.c.
+
+20060825
+
+	Bugfix (introduced Postfix 2.3): with headers-only mail, a
+	Milter "header insert" action corrupted the queue file. The
+	cleanup server executed some end-of-body action before the
+	end-of-header actions. File: cleanup/cleanup_message.c.
+
+	Robustness: mail delivery agents now detect loops in queue
+	files. Files with too many backward jumps are saved to the
+	"corrupt" directory.  File: global/record.c.
+
+20060831
+
+	Bugfix (introduced with initial implementation): missing
+	"dict_errno = 0" caused mis-leading error messages after
+	non-error lookup failure.  Victor Duchovni.  File:
+	util/dict_cidr.c.
+
+	Robustness: the default TLS cipher lists were changed from
+	!foo:ALL into ALL:!foo. Victor Duchovni.  Files:
+	global/mail_params.h and documentation.
+
+20060902
+
+	Bugfix (introduced Postfix 2.3): the LMTP client stripped
+	"inet": from the next-hop destination, but still used the
+	complete next-hop from the delivery request. File:
+	smtp/smtp_connect.c.
+
+20060903
+
+	Cleanup: record loop detection.  File: global/record.c.
+
+20060929
+
+	Workaround: AIX 5.[1-3] getaddrinfo() creates socket address
+	structures with a non-zero port value. This breaks the
+	smtp_bind_address etc. features, and breaks inet_interfaces
+	settings with only one IP address.  Problem reported by
+	Hamish Marson.  Files: util/sock_addr.[hc], util/myaddrinfo.c.
+
+	Bugfix (introduced with the Postfix TLS patch): memory leak
+	in verify_extract_peer(). The OpenSSL documentation provides
+	no information on how subjectAltNames are managed.  Sam
+	Rushing, ironport.  File: tls/tls_client.c.
+
+	Bugfix (introduced with Postfix 2.2): smtp_generic_maps 
+	turned on MIME conversion. File: smtp/smtp_proto.c.
+
+	Workaround: don't send SIZE information in the MAIL FROM
+	command when message content will be subject to 8bit ->
+	quoted-printable conversion.  File: smtp/smtp_proto.c.
+
+20061002
+
+	Compatibility: Sendmail now invokes the Milter connect
+	action with the verified hostname instead of the name
+	obtained with PTR lookup. File: smtpd/smtpd.c.
+
+20061004
+
+	Cleanup: force space between mailq queueid+status and file
+	size items. File: showq/showq.c.
+
+20061005
+
+	Cleanup: make CISCO PIX bug workarounds configurable.  This
+	introduces new parameters: smtp_pix_workarounds (default:
+	disable_esmtp, delay_dotcrlf) and smtp_pix_workaround_maps
+	(workarounds indexed by server IP address).  The default
+	settings are backwards compatible. File: smtp/smtp.c,
+	smtp/smtp_proto.c.
+
+20061006
+
+	Workaround: include the smtpd(8) service name when searching
+	the TLS session cache, to avoid cross-talk between multiple
+	master.cf entries. This does not eliminate cross-talk between
+	multiple (x)inetd.conf entries. Victor Duchovni. Files:
+	smtpd/smtpd.c, tls/tls_server.c.
+
+20061015
+
+	Cleanup: convert the Milter {mail_addr} and {rcpt_addr}
+	macro values to external form. File: smtpd/smtpd_milter.c.
+
+	Cleanup: the Milter {mail_addr} and {rcpt_addr} macros are
+	now available with non-SMTP mail. File: cleanup/cleanup_milter.c.
+
+	Cleanup: convert addresses in Milter recipient add/delete
+	requests to internal form.  File: cleanup/cleanup_milter.c.
+
+	Cleanup: with non-SMTP mail, convert addresses in simulated
+	MAIL FROM and RCPT TO events to external form.  File:
+	cleanup/cleanup_milter.c.
+
+20061017
+
+	Cleanup: removed spurious warning when the cleanup server
+	attempts to bounce mail with soft_bounce=yes. Problem
+	reported by Ralf Hildebrandt. File: cleanup/cleanup_bounce.c.
+
+	Bugfix: null pointer bug when receiving a non-protocol
+	response on a cached SMTP/LMTP connection.  Report by Brian
+	Kantor.  Fix by Victor Duchovni.  File: smtp/smtp_reuse.c.
+
+20061106
+
+	Feature: new retry delivery agent, to avoid the synchronous
+	defer service client in the queue manager. This code is
+	co-located with the error(8) server. File: error/error.c.
+
+	Performance: the queue manager could spend too much time
+	in the synchronous defer service client, causing the watchdog
+	timer to go off.  Where possible, the queue manager now
+	bounces or defers recipients asynchronously, by routing
+	them to the error or the retry delivery agent. Code by
+	Wietse and Patrik Rak. Files: global/recipient_list.c,
+	*qmgr/qmgr_error.c, *qmgr/qmgr_defer.c, *qmgr/qmgr_entry.c,
+	*qmgr/qmgr_deliver.c, *qmgr/qmgr_message.c.
+
+	Performance: refined recipient and job grouping, and more
+	agressive early refill of in-memory recipients to prevent
+	a worst-case scenario where the queue manager became starved
+	until after the last batch of slow in-memory recipients of
+	jumbo multi-recipient mail. Code by Patrik Rak.  Files:
+	global/mail_conf_time.c, qmgr/qmgr_message.c, qmgr/qmgr.c,
+	qmgr/qmgr.h, qmgr/qmgr_entry.c, qmgr/qmgr_job.c,
+	qmgr/qmgr_message.c, qmgr/qmgr_transport.c.
+
+20061113
+
+	Bugfix: the Postfix install/upgrade procedure broke with
+	non-default config_directory. File: conf/post-install.
+
+20061115
+
+	Bugfix: null pointer bug in end-of-header Milter action
+	when the last header line is too large.  Reported by Mark
+	Martinec. The root of the problem is that the MIME state
+	engine may execute up to three call-back functions when it
+	reaches the end of the headers, before it returns to the
+	caller; as long as call-backs return no result, each call-back
+	has to check for itself if a previous call-back ran into a
+	problem.  File: milter/milter8.c.
+
+	Workaround: reduce effective header_size_limit to 60000
+	when Milter inspection is enabled, to avoid breaking the
+	Milter protocol request length limit. File:
+	cleanup/cleanup_message.c.
+
+20061123
+
+	Safety: don't read more than 5000 recipients at a time, to
+	avoid spending too much time away from interrupts.  File:
+	qmgr/qmgr_message.c.
+
+20061201
+
+	Workaround: don't complain with "Error 0" in the trivial-rewrite,
+	verify, proxymap or connection cache client when the server
+	exits after the client sends its request. We still complain,
+	however, when the problem persists.  Files: global/rewrite_clnt.c,
+	global/resolve_clnt.c, global/verify_clnt.c, global/scache_clnt.c,
+	global/dict_proxy.c.
+
+	Safety: the header_size_limit is now enforced more strictly,
+	to avoid inter-operability problems with the Milter protocol.
+	Long headers are truncated at a line boundary if possible,
+	otherwise they are cut between line boundaries. File:
+	cleanup/cleanup_out.c.
+
+20061203
+
+	Bugfix (introduced with Postfix 2.2): with SMTP server
+	tarpit delays of smtp_rset_timeout or larger, the SMTP
+	client could get out of sync with the server while reusing
+	a connection.  The symptoms were "recipient rejected .. in
+	reply to DATA".  Fix by Victor Duchovni and Wietse.  Files:
+	smtp/smtp_proto.c, smtp/smtp_connect.c.
+
+	Robustness: the vbuf and vstream documentation claimed that
+	their *error() macros reported timeout errors, but they
+	didn't really. The implementation was fixed, and redundant
+	vstream_ftimeout() calls were removed. As a result, many
+	Postfix daemons now properly detect write timeout errors
+	on internal connections.  Files: util/vbuf.h.
+
+	Workaround: some broken SMTP servers reply and hang up in
+	the middle of DATA. The Postfix SMTP client now stops sending
+	and tries to receive the server response. This can help to
+	avoid repeated delivery attempts. Initial implementation
+	by Wietse, later work by Victor Duchovni. Files:
+	smtp/smtp_proto.c, smtpstone/smtp-sink.c, util/vstream.c,
+	plus trivial mods for code thatr calls vstream_fpurge().
+
+20061204
+
+	Compatibility: The Postfix installation/upgrade procedure
+	no longer sets "unknown_local_recipient_code = 450" in
+	main.cf. This was a safety net for upgrades from Postfix
+	1.x. Four years later is no longer needed. File:
+	conf/post-install.
+
+	Cleanup: removed vstream_fclose() error warning in the code
+	that disconnects from a delivery agent. There is no need
+	to report errors here because they would already be reported
+	earlier.  Files: *qmgr/qmgr_deliver.c.
+
+	Robustness: "kill me after N seconds" feature to ensure
+	that a daemon process does not get stuck while preparing
+	for exit after signal arrival. File: util/killme_after.[hc],
+	util/watchdog.c, master/master_sig.c.
+
+20061206
+
+	Robustness: low-cost re-entrancy guard that allows daemons
+	to safely call msg_fatal() etc. from a signal handler,
+	without risking memory corruption, or deadlock on Redhat
+	Linux.  This works provided that the signal handler terminates
+	the process. In that special case we need not guarantee
+	after-the-fact consistency of the thread that was interrupted.
+	File: util/msg_output.c.
+
+	Robustness: replace exit() calls by _exit(). File: util/msg.c,
+	bounce/bounce_cleanup.c.
+
+20061207
+
+	Workaround: on systems with usable futimes() or equivalent
+	(Solaris, *BSD, MacOS, but not Linux), always explicitly
+	set the queue file last modification time stamps while
+	creating a queue file. With this, Postfix can avoid logging
+	warnings when the file system clock is ahead of the local
+	clock.  Clock skew can be a problem, because Postfix does
+	not deliver mail until the local clock catches up with the
+	queue file's last modification time stamp.  File:
+	global/mail_stream.c.
+
+	Workaround: on systems without usable futimes() or equivalent,
+	log a warning when the file system clock is more than 100
+	seconds behind the local clock. This does not cause mail
+	delivery problems, but it just looks silly in message
+	headers. File: global/mail_stream.c.
+
+	On systems without usable futimes() (Linux, and ancient
+	versions of Solaris, SunOS and *BSD) Postfix will keep using
+	the slower utime() system call to update queue file time
+	stamps when the file system clock is off with respect to
+	the local system clock.
+
+	Compatibility with Postfix < 2.3: undo the change to bounce
+	instead of defer after pipe-to-command delivery fails with
+	a signal. File: global/pipe_command.c.
+
+20061208
+
+	Workaround: apparently, some mail software removes or hides
+	"<postmaster>" in the Postfix bounce text, because it
+	processes the text as if it were HTML. This confuses users.
+	The bounce template has been updated to remove the < and
+	>.  File: bounce/bounce_templates.c.
+
+	Cleanup: when smtp_generic_maps is turned on, don't parse
+	MIME structures in the message body. Victor Duchovni. File:
+	smtp/smtp_proto.c.
+
+20061210
+
+	Cleanup: streamline the signal handler reentrancy protections,
+	and document under what conditions these protections work,
+	with REENTRANCY sections in the relevant man pages. Files:
+	util/vbuf_print.c.  util/msg.c, util/msg_output.c.
+
+20061211
+
+	Cleanup: when doing server access control by the remote TLS
+	client fingerprint, do not require client certificate
+	verification.  Victor Duchovni.  File: smtpd/smtpd_check.c.
+
+	Safety: when the remote TLS client certificate isn't verified,
+	don't send ccert_subject and ccert_issuer attributes in
+	check_policy_service requests. Victor Duchovni. File:
+	smtpd/smtpd_check.c.
+
+	Bugfix: the postconf command still complained about an
+	unqualified machine name, because it was not updated with
+	the 20050513 change that introduced a default "mydomain =
+	localdomain".  File: postconf/postconf.c.
+
+20061213
+
+	Bugfix: race condition in "ETRN site", "sendmail -qRsite"
+	and "postqueue -s site". When the command arrived while an
+	incoming queue scan was already in progress, mail could
+	stay deferred instead of being flushed. The fix was to
+	unthrottle the queue manager before moving files from the
+	deferred queue to the incoming queue.  Files: flush/flush.c,
+	qmgr/qmgr_scan.c.
+
+	Cleanup: the sendmail and postqueue commands no longer
+	terminate with a non-standard error status after a run-time
+	error in some Postfix internal routine (typically, some
+	essential file is not accessible, or the system is out of
+	memory). Files: sendmail/sendmail.c, postqueue/postqueue.c.
+
+	Feature: "sendmail -qIqueueid" and "postqueue -i queueid"
+	to flush a specific queue file. Files: sendmail/sendmail.c,
+	postqueue/postqueue.c, global/flush_clnt.c, flush/flush.c.
+
+20061214
+
+	Performance: "sendmail -qIqueueid" and "postqueue -i queueid"
+	unthrottle only the necessary message delivery transports
+	and queues. The unthrottle request now is propagated to the
+	queue manager via queue file group read permission bits.
+	Based on initial implementation by Victor Duchovni.  Files:
+	flush/flush.c, *qmgr/qmgr.c, *qmgr/qmgr_scan.c,
+	*qmgr/qmgr_active.c, *qmgr/qmgr_message.c.
+
+20061220
+
+	Workaround: PMilter 0.95 does not deliver SMFIC_EOB+data
+	to the application as SMFIC_BODY+data followed by SMFIC_EOB.
+	To avoid compatibility problems, Postfix now sends
+	SMFIC_BODY+data followed by SMFIC_EOB.  File: milter/milter8.c.
+
+	Bugfix (introduced with Postfix 2.3): when inserting
+	Milter-generated headers at increasing positions in a
+	message, a later header could end up at a previously used
+	insertion point.  Thus, inserting headers at positions (N,
+	N+M) could work as if (N, N) had been specified. Problem
+	reported by Mark Martinec.  File: milter/milter8.c.
+
+20061221
+
+	Feature: time unit suffix support in _command_time_limit.
+	Files: pipe/pipe.c, spawn/spawn.c.
+
+20061227
+
+	Bugfix (introduced with Postfix 2.3): the MX hostname syntax
+	check was skipped with reject_unknown_helo_hostname and
+	reject_unknown_sender/recipient_domain, so that Postfix
+	would still accept mail from domains with a zero-length MX
+	hostname.  File: smtpd/smtpd_check.c.
+
+20061229
+
+	Cleanup: use separate TLS_LEGACY_README to document the old
+	TLS user interface. This will simplify TLS_README dramatically.
+
+	Cleanup: untangled spaghetti code. File: util/inet_listen.c.
+
+20070104
+
+	Bugfix (introduced Postfix 2.3): when creating an alias map
+	on a NIS-enabled system, don't case-fold the YP_MASTER_NAME
+	and YP_LAST_MODIFIED lookup keys. This requires that an
+	application can turn on/off case folding on the fly.  Files:
+	postalias/postalias.c, global/dict_mumble.c, util/dict_mumble.c,
+	proxymap/proxymap.c.
+
+	Cleanup: after the above revision of the proxymap protocol,
+	the proxymap server can now share the same map with clients
+	that have only minor differences in dictionary open/access
+	options.
+
+20070105
+
+	Performance: pipeline of pending delivery agent connections,
+	to improve Linux/Solaris mail delivery performance by another
+	10% while going down-hill with the wind from behind. Design
+	and implementation Victor and Wietse. Files: *qmgr/qmgr.c,
+	*qmgr/qmgr.h, *qmgr/qmgr_transport.c.
+
+20070106
+
+	Cleanup: eliminate the Linux/Solaris "wait for accept()"
+	stage from the queue manager to delivery agent protocol.
+	This alone achieves 99.99% of the Linux/Solaris speed up
+	from the preceding change. The pending connection pipeline
+	takes care of the rest.  Tested on Linux kernels dating
+	back to 2.0.27 (that's more than 10 years ago).  Files:
+	*qmgr/qmgr_transport.c.
+
+20070112
+
+	Bugfix (introduced 20011008): after return from nested
+	access restriction, possible longjump into exited stack
+	frame upon configuration error or table lookup error. Victor
+	Duchovni.  Files: smtpd/smtpd_check.c.
+
+	Workaround: don't insert header/body blank line separator
+	in malformed attachments, to avoid breaking digital signatures.
+	Switch from header to body state, for robust MIME parsing.
+	People concerned about MIME evasion can use a MIME normalizer
+	to corrupt their user's legitimate email.  File:
+	global/mime_state.c.
+
+20070114
+
+	Feature: body replacement support for Milter applications.
+	Postfix 2.3 and older 2.4 versions will be able to deliver
+	body-replaced queue files, but will report the message size
+	as it was before the body was replaced.  Files: milter/milter8.c,
+	cleanup/cleanup_milter.c, cleanup/cleanup_body_region.c.
+
+20070117
+
+	Cleanup: reusable infrastructure for body replacement.
+	Files: cleanup/cleanup_body_edit.c, cleanup/cleanup_region.c.
+
+20070118
+
+	Bugfix: match lists didn't implement ![ipv6address].  Problem
+	reported by Paulo Pacheco. File: util/match_list.c.
+
+	Cleanup: revised the matchlist "!" support, added support
+	for !/file/name, and updated the documentation. File:
+	util/match_list.c.
+
+20070119-21
+
+	Cleanup: pad short message headers with a filler record,
+	so that the result is never shorter than a pointer record.
+	This immensely simplified the support for Milter header
+	modification requests: three complex loops could be replaced
+	by one simpler loop.  The DTXT record type was re-purposed
+	from "deleted header text" to "short header padding", keeping
+	the change backwards compatible.  Files: cleanup/cleanup_out.c,
+	cleanup/cleanup_milter.c, global/record.c.
+
+	Cleanup: the Milter "add recipient" action always added the
+	recipient to the initial envelope segment, causing added
+	recipients to be separate from "sendmail -t" recipients.
+	This violated design, without impact on delivery (always_bcc
+	recipient are always at the end of the queue file even when
+	all other recipients are in the initial segment).  File:
+	global/rec_types.h.
+
+20070123
+
+	Workaround: OpenSSL falsely concludes that AES256 support
+	is present when only AES128 is available.  Code by Victor
+	Duchovni.  File: tls/tls_misc.c.
+
+20070125
+
+	Disable workaround pending completion of updated TLS]
+	support in non-production releases.
+
+20070131
+
+	Assorted code cleanup, portability fixes/workarounds, and
+	minor updates: global/dict_ldap.c, mantools/postlink,
+	tlsmgs/tlsmgr.c, conf/master.cf. LaMont Jones.
+
+20070101
+
+	Portability: GNU Hurd support for multiple kernel environments.
+	LaMont Jones. Files: util/sys_defs.h, makedefs.
+
+	Cleanup: some default settings were adjusted to better fit
+	today's environment: queue_run_delay and minimal_backoff_time
+	were reduced from 1000s to 300s, so that deliveries are
+	retried earlier after the first failure; ipc_idle was reduced
+	from 100s to 5s, so that tlsmgr and scache clients will
+	more quickly release unused file handles. Files:
+	global/mail_params.h, proto/postconf.5.html
+
+20070202
+
+	Catch-up: FreeBSD kqueue support. File: util/events.c.
+
+20070205
+
+	System-V poll(2) support. This is now the preferred method
+	to test a single file descriptor on sufficiently recent
+	versions of FreeBSD, NetBSD, OpenBSD, Solaris and Linux;
+	other systems will be added as evidence becomes available
+	of usable poll(2) implementations. Files: util/read_wait.c,
+	util/write_wait.c, util/readble.c, util/writable.c.
+
+	Streamlined the event_enable_read/write implementation to
+	speed up smtp-source performance, by eliminating expensive
+	kqueue/devpoll/epoll system calls when only the application
+	call-back information changes. On FreeBSD, smtp-sink/source
+	tests now run 5% faster than with the old select(2) based
+	implementation.  File util/events.c.
+
+20070206
+
+	Catch-up: Solaris /dev/poll support. File: util/events.c.
+
+	Bugfix (introduced 20060823): initial state was not in state
+	machine, causing memory access outside the lookup table.
+	File: smtpstone/smtp-sink.c.
+
+20070210
+
+	Catch-up: Linux epoll support. File: util/events.c.
+
+20070211
+
+	Polished the kqueue/devpoll/epoll support; this is now
+	enabled by default on sufficiently recent versions of
+	FreeBSD, NetBSD, OpenBSD, Solaris and Linux; other systems
+	will be added as evidence becomes available of usable
+	implementations. File: util/events.c.
+
+20070212
+
+	Further polish: removed some typos from new code in the
+	events.c handler, undid some unnecessary changes to the
+	{read,write}{_wait,able}.c modules, and addressed Victor's
+	paranoia for multi-client servers with a thousand clients
+	while linked with library routines that can't handle file
+	descriptors >= FD_SETSIZE.
+
+	Cleanup: while debugging the new events.c handler, removed
+	an unnecessary "write after connect" call-back event. File:
+	global/post_mail.c.
+
+20070214
+
+	Robustness: in the queue manager keep a number of free file
+	descriptor slots at the low end, to work around library
+	routines that can't handle file descriptors >= FD_SETSIZE.
+	Files: *qmgr/qmgr_transport.c, util/vstream.[hc]
+
+20070215
+
+	Bugfix (introduced 20070114 with Milter body edit support):
+	the cleanup server terminated with a fatal error when SMTP
+	mail exceeded the message size limit, instead of handling
+	it as a non-fatal error. Files: cleanup/cleanup_extracted.c,
+	cleanup/cleanup_final.c, cleanup/cleanup_bounce.c,
+	cleanup/cleanup_api.c.
+
+20070217
+
+	Streamline the compile time selection of event handling
+	styles, replacing multiple on/off macros by just one
+	multi-valued macro. Files: util/sys_defs.h, util/events.c,
+	master/multi_server.c, *qmgr/qmgr_transport.c.
+
+20070220
+
+	Work-around: Disable SSL/TLS ciphers when the underlying
+	symmetric algorithm is not available in the OpenSSL crypto
+	library at the required bit strength. Problem observed with
+	SunOS 5.10's bundled OpenSSL 0.9.7 and AES 256. Also possible
+	with OpenSSL 0.9.8 and CAMELLIA 256. Root cause fixed in
+	upcoming OpenSSL 0.9.7m, 0.9.8e and 0.9.9 releases. Victor
+	Duchovni, Morgan Stanley. Files: src/smtp/smtp_proto.c,
+	src/smtpd/smtpd.c, src/tls/tls.h, src/tls/tls_client.c,
+	src/tls/tls_misc.c and src/tls/tls_server.c.
+
+20070222
+
+	Workaround: delayed "postfix reload" with ancient FreeBSD4
+	kqueue implementations, causing the first external or
+	internal clients after "postfix reload" to experience a
+	quick disconnect.  Apparently, these kqueue implementations
+	do not deliver a read notification when the master closes
+	the per-service shared master/child status pipe (even when
+	there is only one child; note that the master keeps a handle
+	to both ends of each status pipe).  A child process remains
+	ignorant that the status pipe was closed until the arrival
+	of the next client request, and then terminates.  The
+	workaround is to ignore master status write errors before
+	handling a service request.  Files: master/*_server.c.
+
+	Cleanup: fix race condition that caused unnecessary "premature
+	end-of-input" warning messages when "postfix reload" was
+	issued on a busy mail server. Files: util/attr_scan*c.
+
+20070223
+
+	Cleanup: syslog_name now works as documented with both
+	daemons and commands (including set-gid commands).  Files:
+	global/mail_task.c postlog/postlog.c, global/mail_version.h,
+	sendmail/sendmail.c, postsuper/postsuper.c, postalias/postalias.c,
+	postmap/postmap.c, postqueue/postqueue.c, postdrop/postdrop.c,
+	master/trigger_server.c, master/single_server.c,
+	master/multi_server.c.
+
+20070224
+
+	Workaround: GNU POP3D creates a new mailbox and deletes the
+	old one. Postfix now backs off and retries delivery later,
+	instead of appending mail to a deleted file.  To minimize
+	the use of this workaround, Postfix now by default creates
+	mailbox dotlock files on all systems, and creates dotlock
+	files before opening mailbox files.  Files: util/sys_defs.h,
+	global/mbox_open.c.
+
+20070301
+
+	Workaround: updated workaround for broken Solaris accept().
+	File: util/inet_listen.c.
+
+	Workaround: on some FreeBSD versions, accept(2) can fail
+	with a bogus EINVAL error. We now allow accept(2) to fail
+	for a limited number of times before terminating the process.
+	Files: master/single_server.c, master/multi_server.c.
+
+20070306
+
+	Bugfix (introduced with Postfix 2.3 Milter support): postdrop
+	reported "illegal seek" instead of "file too large".  File:
+	postdrop/postdrop.c.
+
+20070310
+
+	Cleanup: specify "undisclosed_recipients_header =" to disable
+	Postfix's "To: undisclosed-recipients:;" header for mail
+	that lists no recipient. The To: header is not required as
+	of RFC 2822.  The undisclosed_recipients_header parameter
+	value can now be an empty string, a value that was not
+	allowed with earlier Postfix versions. With Postfix 2.5 it
+	will be empty by default. Files: cleanup/cleanup.c,
+	cleanup/cleanup_message.c.
+
+20070312
+
+	Backwards compatibility: don't pad short message header
+	records when Milter support is turned off. This maintains
+	compatibility with Postfix versions that pre-date Milter
+	support. File: cleanup/cleanup_out.c.
+
+20070314
+
+	Bitrot: move the "don't run this daemon by hand" message
+	before other tests. Files: master/*server.c.
+
+20070315
+
+	Bitrot: New OpenLDAP APIs deprecate simplified interfaces,
+	that are the only ones available in Sun's LDAP SDK. Define
+	suitable macros that work with new OpenLDAP and Sun's code.
+	Victor Duchovni, Morgan Stanley. File: src/global/dict_ldap.c
+
+	Cleanup: new "leaf" and "terminal" result attributes support
+	fine-tuning of LDAP group expansion, and provide a solution
+	for the problem case where DN recursion returns both the
+	group address and the addresses of the member objects.
+	Victor Duchovni, Morgan Stanley.  Files: src/global/dict_ldap.c,
+	proto/LDAP_README.html, proto/ldap_table
+
+20070317
+
+	Idioten Sicherheit: stamp every executable file and every
+	core dump file with "mail_version=xxxxx". Adding version
+	stamps and checks to every IPC message is too much change
+	after code freeze, and requires too much time for testing.
+	File: src/global/mail_version.h and every main program file.
+
+20070320
+
+	Bugfix (introduced between 20070120 and 20070121): the
+	cleanup server stored no "delayed mail warning" queue file
+	records with "sendmail -t", and no header_checks filter/redirect
+	records or content encoding records with other mail.  File:
+	global/rec_type.h.
+
+20070321
+
+	Bugfix (introduced 20070224): local(8) or virtual(8) could
+	log a misleading error message after failure to open a
+	mailbox file. File: global/mbox_open.c.
+
+	Bugfix (code should have been updated 20070104): the proxymap
+	client did not propagate changes in case folding flags.
+	Currently, nothing in Postfix uses this functionality.
+	File: global/dict_proxy.c.
+
+20070325
+
+	Bugfix: postfix-install didn't work for symlink or hardlink
+	targets, when the parent directory had a value of "no".
+
+20070326
+
+	Workaround: Eric Raymond's man page formatters don't handle
+	low-level *roff .in or .ti controls. We now use .nf and .fi
+	instead. Files: many.
+
+20070331 
+
+	Bugfix (introduced Postfix 2.3): segfault with HOLD action
+	in access/header_checks/body_checks on 64-bit platforms.
+	File: cleanup/cleanup_api.c.
+
+20070402
+
+	Portability (introduced 20070325): the fix for hardlinks
+	and symlinks in postfix-install forgot to work around shells
+	where "IFS=/ command" makes the IFS setting permanent.  This
+	is allowed by some broken standard, and affects Solaris.
+	File: postfix-install.
+
+	Portability (introduced 20070212): the workaround for
+	non-existent library bugs with descriptors >= FD_SETSIZE
+	broke with "fcntl F_DUPFD: Invalid argument" on 64-bit
+	Solaris.  Files: master/multi_server.c, *qmgr/qmgr_transport.c.
+
+20070405
+
+	Feature: BCC access/policy action, to demonstrate that this
+	is not a good feature. The action's behavior is non-intuitive
+	and requires too much documentation to explain.  It's
+	therefore snapshot only.  File: smtpd/smtpd_check.c.
+
+20070414
+
+	Cleanup: expire cached results from address rewriting, address
+	resolution, and from transport map lookups.  Results expire
+	after 30 seconds; short enough that it doesn't freak out
+	people who run the same test repeatedly, and long enough
+	that it doesn't upset other people with continuous streams
+	of "*" transport map lookups.  Files: global/rewrite_clnt.c,
+	global/resolve_clnt.c, trivial-rewrite/transport.c.
+
+20070421
+
+	Cleanup: on (Linux) platforms that cripple signal handlers
+	with deadlock, "postfix stop" now forcefully stops all the
+	processes in the master's process group, not just the master
+	process alone.  File: conf/postfix-script.
+
+20070422
+
+	Cleanup: the "Delivered-To:" loop detection implementation
+	was moved from the local(8) delivery agent to the library,
+	where it can also be used by other delivery agents. Files:
+	global/delivered_hdr.[hc].
+
+	Safety: the "Delivered-To:" loop detection implementation
+	keeps state for no more than 1000 "Delivered-To:" headers.
+
+	Feature: $domain command-line macro support, to get access
+	to the recipient address domain portion.  Based on code by
+	Koen Vermeer. File: pipe/pipe.c.
+
+	Cleanup: support for "Delivered-To:" loop detection in the
+	pipe(8) delivery agent. This follows a general principle:
+	if a program creates the "Delivered-To:" header, then it
+	is also responsible for "Delivered-To:" loop detection.
+	File pipe/pipe.c.
+
+20070423
+
+	The cache expiring transport map lookups did not distinguish
+	between wildcard transport map entry with an "empty" transport
+	field, or no wildcard transport map entry.
+
+20070424
+
+	Cleanup: making hard-coded behavior configurable. In this
+	case, extracting 8BITMIME encoding information from
+	Content-Transfer-Encoding: message headers.  The default
+	behavior, "detect_8bit_encoding_header = yes", is backwards
+	compatible. This behavior was introduced to generate
+	RFC-compliant bounce messages before Postfix supported the
+	8BITMIME option in the MAIL FROM command and on the Postfix
+	sendmail command line.  Files: cleanup/cleanup_init.c,
+	cleanup/cleanup_message.c, global/mail_params.h.
+
+20070425
+
+	Bugfix: don't falsely report "lost connection from
+	localhost[127.0.0.1]" when Postfix is being portscanned.
+	Files: smtpd/smtpd_peer.c, qmqpd/qmqpd_peer.c.
+
+20070429
+
+	Feature: "postfix status" to report whether Postfix is
+	running.  By Mike Cappella.
+
+	Cleanup: configurable address case folding moved from the
+	pipe(8) delivery agent to the library, where it can also
+	be used by other delivery agents. Files: global/fold_addr.[hc].
+
+20070430
+
+	Robustness: recommend a "0" process limit for policy servers
+	to avoid "connection refused" problems when the smtpd process
+	limit exceeds the default process limit.  File:
+	proto/SMTPD_POLICY_README.html.
+
+20070501
+
+	Workaround: turn on KEEPALIVE probes to avoided "lost
+	connection after sending end-of-data" problems when some
+	stateful (NAT) filter expires an idle connection too soon.
+	This requires that the kernel's TCP keepalive timer be set
+	to a sufficiently short time (perhaps 100s or less).  Files:
+	util/sane_accept.c, util/sane_connect.c.
+
+	Safety: when IPv6 (or IPv4) is turned off, don't treat an
+	IPv6 (or IPv4) connection from e.g. inetd as if it comes
+	from localhost[127.0.0.1]. Files: smtpd/smtpd_peer.c,
+	qmqpd/qmqpd_peer.c.
+
+20070502
+
+	Workaround: build without EPOLL support when an epoll-enabled
+	kernel sits underneath a retarded libc.  File: makedefs.
+
+	Cleanup: missing support for SASL security properties with
+	Dovecot SASL authentication. Based on an initial version
+	by Lev A. Serebryakov.  File: xsasl/xsasl_dovecot_server.c.
+
+20070503
+
+	Cleanup: changed the default address verification sender
+	from "postmaster" to "double-bounce", so that the Postfix
+	SMTP server no longer surprises unsuspecting people by
+	excluding "postmaster" from SMTPD access controls.  File:
+	global/mail_params.h.
+
+20070508
+
+	Bugfix: Content-Transfer-Encoding: attribute values are
+	case insensitive. File: src/cleanup/cleanup_message.c.
+
+20070514
+
+	Bugfix: the makedefs EPOLL workaround broke any attempt to
+	build on a 2.6 kernel. And that two weeks after the workaround
+	had been posted to the mailing list. File: makedefs.
+
+	Bugfix: mailbox_transport(_maps) and fallback_transport(_maps)
+	were broken when used with the error(8) or discard(8)
+	transports. Cause: insufficient documentation.  Files:
+	error/error.c, discard/discard.c.
+
+20070520
+
+	Bugfix (problem introduced Postfix 2.3): when DSN support
+	was introduced it broke "agressive" recipient duplicate
+	elimination with "enable_original_recipient = no".  File:
+	cleanup/cleanup_out_recipient.c.
+
+20070523
+
+	Feature: cyrus_sasl_config_path to specify a search path
+	for Cyrus SASL configuration files (currently used only to
+	locate the smtpd.conf file).  Based on code by Victor
+	Duchovni. Files: smtpd/smtpd.c xsasl/xsasl_cyrus_server.c,
+	(and xsasl/xsasl_cyrus_client.c for future expansion).
+
+20070525
+
+	Bugfix (introduced 20070523): the sasl_set_path() function
+	name was mis-speeled.
+
+20070529
+
+	Bugfix (introduced Postfix 2.3): the sendmail/postdrop
+	commands would hang when trying to submit a message larger
+	than the per-message size limit. File: postdrop/postdrop.c.
+
+20070530
+
+	Sabotage the saboteur who insists on breaking Postfix by
+	adding gethostbyname() calls that cause maildir delivery
+	to fail when the machine name is not found in /etc/hosts,
+	or that cause Postfix processes to hang when the network
+	is down.
+
+20070531
+
+	Portability: Victor helpfully pointed out that change
+	20070425 broke on non-IPv6 systems. Files: smtpd/smtpd_peer.c,
+	qmqpd/qmqpd_peer.c.
+
+20070610
+
+	Isolation: don't allow the pipe(8) delivery agent to leak
+	postdrop group privileges with "user=xxx:postdrop". File:
+	pipe/pipe.c.
+
+20070613
+
+	Bugfix: the Milter client assumed that a Milter application
+	does not modify the message header or envelope, after that
+	same Milter application has modified the message body of
+	that same email message. This is not a problem with updates
+	by different Milter applications.  Problem was triggered
+	by Jose-Marcio Martins da Cruz. Also simplified the handling
+	of queue file update errors. File: milter/milter8.c.
+
+20070614
+
+	Workaround: some non-Cyrus SASL SMTP servers require SASL
+	login without authzid (authoriZation ID), i.e. the client
+	must send only the authcid (authentiCation ID) + the authcid's
+	password.  In this case the server is supposed to derive
+	the authzid from the authcid. This works as expected when
+	authenticating to a Cyrus SASL SMTP server.  To get the old
+	behavior specify "send_cyrus_sasl_authzid = yes", in which
+	case Postfix sends the (authzid, authcid, password), with
+	the authzid equal to the authcid. File: xsasl/xsasl_cyrus_client.c.
+
+20070619
+
+	Portability: /dev/poll support for Solaris chroot jail setup
+	scripts. Files: examples/chroot-setup/Solaris8,
+	examples/chroot-setup/Solaris10.
+
+20070713
+
+	The RFC documents at www.faqs.org are being polluted with
+	"feedback" spam. The Postfix hypertext documentation now
+	points to tools.ietf.org. File: mantools/postlink.
+
+20070719
+
+	Feature: updated smtp-sink with new options to send a
+	pre-formatted message from file, and to handle replies other
+	than the expected 2xx or 3xx. File: smtpstone/smtp-source.c.
+
+	Cleanup: Milter client error handling, so that the (Postfix
+	SMTP server's Milter client) does not get out of sync with
+	Milter applications after the (cleanup server's Milter
+	client) encounters some non-recoverable problem.  Files:
+	milter/milter8.c, smtpd/smtpd.c.
+
+20070720
+
+	Support for RFC 4954 (SASL AUTH, updates RFC 2554, refines
+	some reply codes and introduces DSN enhanced status codes)
+	and RFC 3848 ("Received ...  with ESMTPS?A? ...). Currently,
+	support for the latter is always on.  Files: smtpd/smtpd.c,
+	smtpd/smtpd_sasl_proto.c, smtpd/smtpd_sasl_glue.c.
+
+20070727
+
+	Workaround: the queue manager no longer logs a warning for
+	mail sent to the local double-bounce address (normally, the
+	this is used as the sender while reporting an undeliverable
+	bounce message to the local postmaster).  As of 20070503
+	the local double-bounce address is the default sender for
+	sender/recipient address verification probes, and it now
+	shows up as a spam target. Files: *qmgr/qmgr_message.c.
+
+20070729
+
+	Performance: fix for poor TCP performance for loopback
+	(127.0.0.1) connections. Problem reported by Mark Martinec.
+	Files: util/vstream.c, util/vstream_tweak.c, milter/milter8.c,
+	smtp/smtp_connect.c, smtpstone/*source.c.
+
+20070730
+
+	Bugfix: when a milter replied with ACCEPT at or before the
+	first RCPT command, the cleanup server would apply the
+	non_smtpd_milters setting as if the message was a local
+	submission. Problem reported by Jukka Salmi. Also, the
+	cleanup server would get out of sync with the milter when
+	a milter replied with ACCEPT at the DATA command. Files:
+	cleanup/cleanup_envelope.c, smtpd/smtpd.c, milter/milters.c.
+
+20070811
+
+	Cleanup: unlike smtpd_mumble_restrictions, the Postfix SMTP
+	server Milter reject logging did not show the (helo argument,
+	sender address, or recipient address) that was being rejected.
+	File: smtpd/smtpd.c.
+
+20070824
+
+	Bugfix (introduced snapshot 20070429): the pipe(8) delivery
+	agent 'q' flag (quote address local-part) used the same bit
+	mask as the 'B' flag (append blank line). Setting one flag
+	also turned on the other. File: pipe/pipe.c.
+
+	Feature: specify the 'X' flag to indicate that the pipe(8)
+	delivery agent performs final delivery. This changes the
+	status in DSN "success" messages from "relayed" into
+	"delivered".  File: pipe/pipe.c.
+
+20070904-6
+
+	Feature: stress-adaptive behavior. When a "public" network
+	service runs into an "all processes are busy" condition,
+	the master(8) daemon logs a warning, restarts the service,
+	and runs it with "-o stress=yes" on the command line (normally
+	it runs the service with "-o stress=").  This can be used
+	to make main.cf parameter settings stress dependent.
+	Examples: "smtpd_timeout = ${stress?10}${stress:300}" and
+	"smtpd_hard_error_limit = ${stress?1}${stress:20}".  Files:
+	master/master_avail.c, master/master_spawn.c, master/master_ent.c.
+
+20070911
+
+	Bugfix (introduced Postfix 2.2.11): TLS client certificate
+	with unparsable canonical name caused the SMTP server's
+	policy client to allocate zero-length memory, triggering
+	an assertion that it shouldn't do such things.  File:
+	smtpd/smtpd_check.c.
+
+20070912
+
+	Bugfix (introduced Postfix 2.4) missing initialization of
+	event mask in the event_mask_drain() routine (used by the
+	obsolete postkick(1) command). Found by Coverity.  File:
+	util/events.c.
+
+20070917
+
+	Workaround: the flush daemon forces an access time update
+	for the per-destination logfile, to prevent an excessive
+	rate of delivery attempts when the queue file system is
+	mounted with "noatime".  File: flush/flush.c.
+
+20070923
+
+	Cleanup: don't complain when a "corrupt" queue file is 
+	deleted before it can be saved to the "corrupt" queue.
+	Files: *qmgr/qmgr_active.c.
+
+20071003
+
+	Logging: the Postfix SMTP server now logs the number of
+	bytes received after the DATA command when a connection
+	breaks before mail delivery completes.  This may help finding
+	the cause of the problem: packet loss, MTU, or other. File:
+	smtpd/smtpd.c.
+
+20071004
+
+	Logging: all daemons now log the TCP port number of remote
+	SMTP or QMQP clients.  The information is overruled with
+	the SMTP XCLIENT command, is propagated through SMTP-based
+	content filters with XFORWARD, and is sent to Milter
+	applications.  Files: smtpd/smtpd_peer.c, smtpd/smtpd.c,
+	smtpd/smtpd_proxy.c, smtpd/smtpd_milter.c, qmqpd/qmqpd_peer.c,
+	cleanup/cleanup_milter.c, *qmgr/qmgr_message.c,
+	*qmgr/qmgr_deliver.c, smtp/smtp_proto.c, pipe/pipe.c,
+	global/deliver_request.c, global/deliver_pass.c,
+	proto/XFORWARD_README, proto/XCLIENT_README.
+
+	Feature: per-command delays in smtp-sink. File:
+	smtpstone/smtp-sink.c.  Victor Duchovni.
+
+20071006
+
+	Cleanup: updated a bunch of hard-coded host[addr] logging
+	statements. Files: smtpd/smtpd.c, smtpd/smtpd_chat.c,
+	smtpd/smtpd_sasl_glue.c.
+
+	Cleanup: client port logging is now configurable (off by
+	default). Parameters: smtpd_client_port_logging and
+	qmqpd_client_port_logging. Files: smtpd/smtpd_peer.c,
+	qmqpd/qmqpd_peer.c.
+
+	Cleanup: send client port information "0" instead of "unknown"
+	to Milter applications. Files: smtpd/smtpd.c, smtpd/smtpd_milter.c,
+	cleanup/cleanup_milter.c.
+
+20071025
+
+	Portability: on Linux we no longer need /proc to find out
+	local IPv6 interface address information. LaMont Jones.
+	Files: util/sys_defs.h.
+
+20071030
+
+	Bugfix (introduced Postfix 2.3): Postfix mistakenly enforced
+	the 64kbyte limit (for sending body parts TO Milter
+	applications) also while receiving packets FROM Milter
+	applications.  The limit is now at least 1GB.  File:
+	milter/milter8.c.
+
+20071105
+
+	Feature: ORIGINAL_RECIPIENT environment variable.  Corey
+	Hickey. File: local/local.c.
+
+20071108-10
+
+	Feature: general-purpose header/body_checks library module,
+	first used in the SMTP client. Actions that change the
+	message delivery time or destination can be implemented
+	with a simple extension mechanism (they make sense only in
+	before-queue filters).  Configuration parameters:
+	smtp_header_checks, smtp_mime_header_checks,
+	smtp_nested_header_checks, smtp_body_checks. Unlike the
+	cleanup server, the mime and nested header checks don't by
+	default assume the header_checks value.  Files:
+	global/header_body_checks.[hc], smtp/smtp_proto.c,
+	smtp/smtp_session.c.
+
+20071110
+
+	Feature: ${original_recipient} command-line macro.  Corey
+	Hickey. File: pipe/pipe.c.
+
+	Bugfix (introduced: 20071004) missing exception handling
+	in smtp-sink per-command delay feature. Victor Duchovni.
+	File: smtpstone/smtp-sink.c.
+
+2007117-20
+
+	Revised queue manager with separate mechanisms for
+	per-destination concurrency control and dead destination
+	detection.  The concurrency control supports non-integer
+	feedback for more gradual concurrency adjustments, and uses
+	hysteresis to avoid rapid oscillations.  A destination is
+	declared "dead" after a configurable number of pseudo-cohorts
+	(number of deliveries equal to a destination's concurrency)
+	reports connection or handshake failure. This work began
+	with a discussion that Wietse started with Patrik Rak and
+	Victor Duchovni late January 2004, and that Victor revived
+	late October 2007. To establish a baseline for further
+	improvement, Wietse implemented a few simple mechanisms.
+
+	Configuration parameters for debugging, positive/negative
+	hysteresis, and positive/negative feedback. Some have since
+	been removed or renamed, so no point naming them here.
+	Files: global/mail_params.h, qmgr/qmgr_queue.c,
+	qmgr/qmgr_deliver.c.
+
+20071121
+
+	Boundary condition: Patrik Rak pointed out that handling
+	of negative feedback with concurrency window 1 could
+	be improved.
+
+	Feature: support to look up null sender addresses in
+	sender-dependent relayhost maps. Parameter name:
+	empty_address_relayhost_maps_lookup_key (default; <>).
+	Keean Schupke. File: trivial-rewrite/resolve.c.
+
+20071127-9
+
+	Revision 2 of queue manager scheduler interface, allowing
+	feedback parameter settings with constants and variables
+	such as 1/8 or 1/concurrency.  Some experimental parameters
+	were removed and others were renamed. The new names are:
+	default_destination_concurrency_negative_feedback,
+	default_destination_concurrency_positive_feedback,
+	default_destination_concurrency_failed_cohort_limit,
+	destination_concurrency_feedback_debug.
+
+	Also available are transport-specific overrides:
+	<transport>_initial_destination_concurrency,
+	<transport>_destination_concurrency_negative_feedback,
+	<transport>_destination_concurrency_positive_feedback,
+	<transport>_destination_concurrency_failed_cohort_limit.
+
+	Files: global/mail_params.h, *qmgr/qmgr.c, *qmgr/qmgr_transport.c,
+	*qmgr/qmgr_queue.c, *qmgr/qmgr_feedback.c, postconf/auto.awk.
+
+20071202
+
+	Feature: output rate control. For example, specify
+	"smtp_destination_rate_delay = 5m" to insert a five-minute
+	delay between deliveries. This was an opportunity to define
+	the mutually exclusive states that a queue can have, and
+	to detect invalid transitions.  This will make adding new
+	features code easier.  Files: *qmgr/qmgr_transport.c,
+	*qmgr/qmgr_queue.c, *qmgr/qmgr_entry.c.
+
+	Bugfix (introduced Postfix 2.2): don't update the back-to-back
+	delivery time stamp while deferring mail. File: *qmgr/qmgr_entry.c.
+
+20071203
+
+	Feature: support for read-write tables in the proxymap
+	service. This is implemented with a separate master.cf entry
+	named "proxywrite" that should run with process limit of 1
+	if you want to update Berkeley DB like tables. This feature
+	requires that tables be authorized with the proxy_write_maps
+	configuration parameter. Files: global/dict_procy.[hc],
+	proxymap/proxymap.c.
+
+	Human factors: the postmap and postalias commands now produce
+	nicer diagnostics when asked to do something with a proxied
+	map that they can't do. Files: postmap/postmap.c,
+	postalias/postalias.c.
+
+	Bugfix: the proxymap client didn't properly propagate user
+	options to the proxymap server.  File: util/dict.h.
+
+	Workaround: force synchronous updates in the proxymap server
+	so that maps will be in a consistent state between updates.
+	File: proxymap/proxymap.c.
+
+	Bugfix: an empty rate-limited queue wasn't removed after
+	timer expiry. Files: *qmgr/qmgr_queue.c.
+
+20071204
+
+	Use different sockets for proxymap (read-only) and proxywrite
+	(read-write) services in the proxy: client. Victor Duchovni.
+	File: global/dict_proxy.c.
+
+	Feature: proxymap delete support by Victor Duchovni.  Files:
+	global/dict_proxy.c, proxymap/proxymap.c.
+
+	Feature: proxymap delete support. Files: postmap/postmap.c
+	postalias/postalias.c.
+
+	Cleanup: the Postfix sendmail command did not include the
+	user (name/uid) information in all error messages. File:
+	sendmail/sendmail.c.
+
+	Feature: data_directory configuration parameter for
+	Postfix-writable data such as caches and random numbers.
+	Files: postfix-install, conf/postfix-files.
+
+20071206
+
+	Security: tlsmgr(8) and verify(8) no longer use root
+	privileges when opening their cache files. This avoids a
+	potential security loophole where the ownership of a file
+	(or directory) does not match the trust level of the content
+	of that file (or directory). See RELEASE_NOTES for how to
+	use pre-existing data. Files: util/set_eugid.[hc],
+	tlsmgr/tlsmgr.c, verify/verify.c.
+
+	Compatibility: as a migration tool, redirect attempts by
+	tlsmgr(8) or verify(8) to open files in non-Postfix directories
+	to the Postfix-owned data_directory. File: global/data_redirect.c.
+
+	Lots of pathname fixes in the examples of TLS_README and
+	postconf(5); -lm library screw-up in queue manager Makefiles.
+
+20071207
+
+	Cleanup: pathname fixes in documentation; unnecessary queue
+	scan in the queue manager rate limiter; inverse square root
+	feedback in the queue manager concurrency scheduler.  Files:
+	mantools/postlink, proto/TLS_README.html, *qmgr/qmgr_queue.c.
+
+	All changes up to this point should be ready for Postfix 2.5.
+
+	Documentation: updated nqmgr preemptive scheduler documentation
+	by Patrik Rak. File: proto/SCHEDULER_README.html.
+
+20071211
+
+	Bugfix (introduced 19980315): the "write" equivalent of
+	bugfix 20030104. File: util/vstream.c.
+
+20071212
+
+	Feature: "stress=" or "stress=yes" attribute in the SMTPD
+	policy delegation protocol. File: smtp/smtpd_check.c.
+
+	Cleanup: allow_min_user now rejects recipients (and senders)
+	starting with '-' at SMTP session time. To make this possible
+	the feature was moved from qmgr(8) to trivial-rewrite(8).
+	Files: *qmgr/qmgr_message.c, trivial-rewrite/resolve.c.
+
+20071213:
+
+	Cleanup: the queue manager and SMTP client now distinguish
+	between connection cache store and retrieve hints. Once the
+	queue manager enables connection caching (store and load)
+	hints on a per-destination queue, it keeps sending connection
+	cache retrieve hints to the delivery agent even after it
+	stops sending connection cache store hints.  This prevents
+	the SMTP client from making a new connection without checking
+	the connection cache first. Victor Duchovni.  Files:
+	*qmgr/qmgr_entry.c, smtp/smtp_connect.c.
+
+	Bugfix (introduced Postfix 2.3): the SMTP client never
+	marked corrupt files as corrupt. Victor Duchovni. File:
+	smtp/smtp_proto.c.
+
+	Cleanup: the SMTP client won't mark a destination as
+	unavailable when at least one SMTP session was completed
+	without connect or handshake error. Victor Duchovni. Files:
+	smtp/smtp_connect.c, smtp/smtp_session.c, smtp/smtp_proto.c,
+	smtp/smtp_trouble.c.
+
+20071215
+
+	Documentation and code cleanup. Files: global/deliver_request.h,
+	*qmgr/qmgr_entry.c, smtp/smtp_connect.c,
+	proto/SCHEDULER_README.html.
+
+	Bugfix (introduced snapshot 20071006): qmqpd ignored the
+	qmqpd_client_port_logging parameter setting. File:
+	qmqpd/qmqpd.c.
+
+20071216
+
+	Cleanup: show the remote SMTP server port in verbose logging,
+	warnings and postmaster notices.  Still don't show the port
+	in delivery status notifications. Files: smtp/smtp_chat.c,
+	smtp/smtp_sasl_glue.c, smtp/smtp_sasl_proto.c.
+
+	The "tls_require_cert" is now compatible with OpenLDAP 2.1
+	and later. Victor Duchovni. Files: proto/ldap_table,
+	global/dict_ldap.c.
+
+20071218
+
+	Cleanup: removed the "#ifdef USE_LIBMILTER_INCLUDES"
+	dependencies on system-installed Milter protocol include
+	files. Verified that the object code has not changed. File:
+	milter/milter8.c.
+
+	Sanity check: idiot filter to detect attempts to use the
+	same database file for different TLS session caches.  File:
+	tlsmgr/tlsmgr.c.
+
+	Cleanup: updated the spell check stoplist and the spell
+	check script. Files: mantools/spell, proto/stop.
+
+	Cleanup: replaced documentation references to xxgdb by ddd.
+	The xxgdb program hasn't been updated in more than 10 years.
+	Files: proto/postconf.proto, conf/main.cf.
+
+20071219-20
+
+	Feature: support for all new Sendmail 8.14 Milter features
+	except SMFIR_SKIP (skip further events of this type),
+	SMFIP_RCPT_REJ (report rejected recipients to the mail
+	filter), SMFIR_CHGFROM (replace sender, with optional ESMTP
+	command parameters), and SMFIR_ADDRCPT_PAR (add recipient,
+	with optional ESMTP command parameters). Files: milter/milters.c,
+	milter/milter8.c, milter/test-milter.c, cleanup/cleanup_milter.c.
+
+20071221
+
+	Feature: support for Sendmail 8.14 Milter SMFIR_SKIP (skip
+	further events of this type). Files: milter/milter8.c,
+	milter/test-milter.c.
+
+	Cleanup: don't try sending HELO after a 421 EHLO reply.
+	File: smtp/smtp_proto.c.
+
+20071221-nonprod
+
+	Using 20071221 as reference point.
+
+	Cleanup: Simplified TLS library cipher and protocol API to
+	just pass string-valued properties to tls_client_init() and
+	tls_client_start(). The client is now agnostic of the
+	mechanics of cipher management internal to the library. The
+	main.cf parameters used internally in the library are now
+	loaded by the library, not the caller. Files:
+	src/smtp/lmtp_params.c, src/smtp/smtp.c, src/smtp/smtp.h,
+	src/smtp/smtp_params.c, src/smtp/smtp_proto.c,
+	src/smtp/smtp_session.c, src/smtpd/smtpd.c, src/tls/tls.h,
+	src/tls/tls_client.c, src/tls/tls_level.c, src/tls/tls_misc.c,
+	src/tls/tls_server.c, src/tls/tls_session.c, src/tls/tls_verify.c
+	and src/tlsmgr/tlsmgr.c
+
+	Cleanup: Client session lookup key "salting" is now handled
+	internally in the tls library. Files: src/tls/tls_client.c
+
+	Cleanup: Cipher state is cached, and only updated when
+	necessary.  Files: src/tls/tls_misc.c
+
+	Feature: Extended the syntax of protocol selection to allow
+	exclusions as well as inclusions. Files: src/tls/tls_misc.c
+
+	Cleanup: Updated default verification depth to match reality:
+	default is 9 in OpenSSL and we don't yet override it.  When
+	we do (soon), the default will match previous behavior.
+	Files: src/global/mail_params.h
+
+	Bugfix: Reference to obsolete "pfixtls" code won't compile
+	inside #ifdef for OpenSSL <= 0.9.5a. Using an OpenSSL release
+	that old has not been tested for some time, but may now
+	work. Files: src/tls/tls_bio_ops.c.
+
+	Replaced "void *" TLS library application handles by explicit
+	pointer types, while hiding data structure implementation
+	details from the TLS library users. Files: tls/tls_client.c,
+	tls/tls_server.c, smtp/smtp.c, smtpd/smtpd.c.
+
+	The TLS library no longer modifies VSTRINGs passed in by
+	the caller. Where possible, information is passed as "const"
+	from application to library. Files: smtp/smtp_proto.c,
+	tls/tls_client.c.
+
+20071227-nonprod
+
+	Replaced explicit initialization of props structures by
+	emulating function calls with named parameter lists.  Files:
+	tls/tls.h, smtp/smtp.c, smtp/smtp_proto.c, smtpd/smtpd.c.
+
+20071222
+
+	Further polishing of the Milter code and logging. File:
+	milter/milter8.c.
+
+20071123
+
+	Further polishing of the Milter code. With SETSYMLIST, each
+	Milter can now update its own macros instead of clobbering
+	the global copy that is shared with other Milters. Also an
+	opportunity to clean up some ad-hoc code for sending macro
+	lists from smtpd(8) to cleanup(8). Files: milter/milter.c,
+	milter/milter8.c, milter/milter_macros.c.
+
+20071224
+
+	Further polishing of the Milter code. Eliminated unnecessary
+	steps from the initial smtpd/cleanup Milter handshake. Files:
+	milter/milter.c, milter/milter8.c, milter/milter_macros.c.
+
+	Cleanup: name_code(3) and name_mask(3) now support read-only
+	tables. Files: util/name_code.[hc], util/name_mask.[hc].
+
+20071227
+
+	Cleanup: further refinements of the Milter code, allowing
+	for multiple macro overrides. The code is now ready for
+	serious testing. File: milter/milter8.c.
+
+20071229
+
+	Bugfix: the Milter client did not replace the Postfix-specific
+	form for unknown host names by the Sendmail-specific form.
+	File: milter/milter8.c.
+
+	Cleanup: when a cleanup milter reports a problem don't log
+	generic "4.3.0 Sevice unavailable", but log the text for
+	the actual error. File: cleanup/cleanup_milter.c.
+
+20080102-nonprod
+
+	SMTP client fingerprint security level support and configurable
+	fingerprint digest algorithm. Victor Duchovni. Files:
+	smtp/lmtp_params.c, smtp/smtp.c, smtp/smtp.h,
+	src/smtp/smtp_params.c, src/smtp/smtp_proto.c,
+	src/smtp/smtp_session.c, tls/tls_client.c, tls/tls_level.c,
+	tls/tls_verify.c.
+
+20080103-nonprod
+
+	Missed "invalid TLS configuration" patch for SMTP client.
+	Victor Duchovni. File: smtp/smtp_proto.c.
+
+	SMTP server configurable fingerprint digest algorithm.
+	Victor Duchovni. Files: smtpd/smtpd.c, tls/tls.h,
+	tls/tls_server.c, tls/tls_verify.c.
+
+20080104-nonprod
+
+	Cleanup: finally implemented certificate verification depth
+	limit parameters. Prior to Postfix 2.5 these were ignored.
+	For backwards compatibility, the default verification depth
+	limit is now 9, the OpenSSL default. Victor Duchovni. Files:
+	src/tls/tls_client.c, src/tls/tls_server.c, src/tls/tls_verify.c.
+
+	Robustness: Avoid possibility of NULL pointer issues in
+	application code that checks certificate names, by providing
+	"empty string" values when no data is available.  Victor
+	Duchovni.  Files: src/tls/tls_verify.c, src/tls/tls_client.c,
+	src/tls/tls_server.c, src/smtpd/smtpd_check.c, src/smtpd/smtpd.c.
+
+	Cleanup: separation of TLS handshake from security level
+	enforcement. The library shakes hands; the application
+	decides if the resulting security is acceptable. Victor
+	Duchovni.  Files: smtpd/smtpd.c, smtpd/smtpd_proto.c,
+	tls/tls_server.c, tls/tls_client.c, tls/tls_verify.c.
+
+	Robustness: more robust processing of ASN.1 string attributes
+	in x509v3 certificates, plus additional sanity checks (e.g.
+	embedded null characters). Victor Duchovni. File:
+	src/tls/tls_verify.c.
+
+20080104
+
+	Workaround: minor change to the Dovecot AUTH request to
+	prevent dovecot-auth memory wastage. Timo Sirainen.  File:
+	xsasl/xsasl_dovecot_server.c.
+
+20080105-nonprod
+
+	Cleanup: renamed TLS-related symbols for consistency (always
+	include the init, start, stop prefix in the TLS library
+	function and data structure names; consistently distinguish
+	between per-application TLS state and per-session TLS state;
+	consistently use the fpt prefix for fingerprint related
+	variables and structure members; consistent use of monocase
+	typedef-ed names).
+
+20080106-nonprod
+
+	Cleanup: consistent use of <pre> and <blockquote> in examples;
+	instead of emphasizing new Postfix 2.5 behavior in reference
+	documentation, describe the new behavior as "current", with
+	historical behavior as a supplemental note.
+
+20080107
+
+	Feature: new "pass" service type (in addition to "inet",
+	"unix" and "fifo").  The "pass" service type supports
+	front-end daemons that accept all inbound connections and
+	that permit only well-behaved clients to talk to the MTA.
+	This service type had been sitting in the master daemon for
+	years but was disabled by default.  Actual applications for
+	this will have to be developed later.  Files: util/upass_connect.c,
+	util/upass_trigger.c.
+
+20080108
+
+	Cleanup: where possible, store data structures in read-only
+	memory. Besides the security advantage of no write access,
+	this also gives slightly better memory utilization when
+	many processes execute the same file. Files: pretty much
+	everything that has a static table, except for a few tables
+	in the benchmark tools with flags that are controlled by
+	command-line information.
+
+20080109
+
+	Cleanup: more read-only data. Files: everything that passes
+	around a HEADER_OPTS pointer.
+
+20080112
+
+	Safety: optional lookup table to prevent the Postfix SMTP
+	client from making repeated SASL login failures with the
+	same hostname, username and password.  This introduces new
+	parameters: smtp_sasl_auth_cache_name, smtp_sasl_auth_cache_time.
+	Based on code by Keean Schupke.  Files: smtp/smtp_sasl_glue.c,
+	smtp/smtp_sasl_auth_cache.c.
+
+	Safety: the Postfix SMTP client now by default defers mail
+	after the server rejects a SASL login attempt with a 535
+	status code.  Specify "smtp_sasl_auth_soft_bounce = no" to
+	get the earlier behavior.  Based on code by Keean Schupke.
+	Files: smtp/smtp_sasl_glue.c.
+
+20080114
+
+	Safety: the smtpd_client_new_tls_session_rate_limit setting
+	now also limits the number of failed TLS handshakes. This
+	limits the impact of broken configurations. File: smtpd/smtpd.c.
+
+20080115
+
+	Bugfix (introduced 20080112): Patrik Rak found two bugs
+	that largely canceled each other out, causing Postfix not
+	to complain about a missing "proxy:" prefix with the new
+	smtp_sasl_auth_cache_name parameter setting. File:
+	smtp/smtp_sasl_glue.c.
+
+	Documentation: new SOHO_README file for small/home offices.
+	The text is automatically generated from bits and pieces of
+	information that are scattered across other documents.
+	File: mantools/make_soho_readme.
+
+20080116
+
+	Bugfix (introduced 20080112): missing #ifdef for the SASL
+	login failure cache. File: smtp/smtp_sasl_auth_cache.h.
+
+20080123
+
+	Name fix: renamed the mumble_delivery_rate_delay parameter
+	to mumble_destination_rate_delay, because it really is a
+	per-destination feature. With this change we keep the option
+	of implementing a future per-transport rate delay.
+
+20080125
+
+	Bugfix (introduced 20071216): missing {} in the LDAP client
+	broke OpenLDAP TLS.  The setting tls_require_cert=no was
+	further broken because Postfix used OpenLDAP incorrectly.
+	Victor Duchovni.  This broke tls_require_cert=no File:
+	global/dict_ldap.c.
+
+20080126
+
+	Cleanup: the post-install script now requires that it is
+	invoked via the postfix(1) command. This was the intended
+	use since Postfix 2.1, but it was never enforced.  The
+	documentation for package maintainers has been updated
+	accordingly. File: conf/post-install.
+
+20080130
+
+	Bugfix (introduced 20071204): wrong proxywrite process limit
+	in the default master.cf file.  File: conf/master.cf.
+
+20080131
+
+	Bugfix (introduced 20080126): the new "do not execute
+	directly" test in post-install got broken during code
+	cleanup.  File: conf/post-install.
+
+20080201
+
+	Workaround: undo the changes that require that post-install
+	is invoked via the postfix command, because this breaks
+	when "postfix start" is invoked with an obsolete postfix
+	command that doesn't export the new data_directory parameter.
+
+	Workaround: pick up a missing data_directory setting from
+	main.cf when "postfix start" is invoked with an obsolete
+	postfix command. File: conf/post-install.
+
+20080207
+
+	Cleanup: soft_bounce support for multi-line Milter replies.
+	File: src/milter/milter8.c.
+
+	Cleanup: preserve multi-line format of header/body Milter
+	replies. Files: cleanup/cleanup_milter.c, smtpd/smtpd.c.
+
+	Cleanup: multi-line support in SMTP server replies.  File:
+	smtpd/smtpd_chat.c.
+
+	SAFETY: postfix-script, postfix-files and post-install are
+	moved away from /etc/postfix to $daemon_directory. There
+	were too many accidents where people clobbered these files
+	with versions from an older Postfix release and ended up
+	with an unusable Postfix setup.  Files: postfix-install,
+	Makefile.in, postfix/postfix.c, conf/postfix-files,
+	conf/postfix-script, conf/post-install.
+
+20080212
+
+	Feature: check_reverse_client_hostname_access, to make
+	access decisions based on the unverified client hostname.
+	For safety reasons an OK result is not allowed.  Noel Jones.
+	Files: smtpd/smtpd_check.c plus header files and documentation.
+
+20080215
+
+	Safety: break SASL loop in case both the SASL library and
+	the remote SMTP server are confused. File: smtp/smtp_sasl_glue.c.
+
+20080220
+
+	Safety: the master daemon now sets an exclusive lock on a
+	file $data_directory/master.lock, so that the data directory
+	can't be shared between multiple Postfix instances.  This
+	would corrupt files that rely on single-writer updates
+	(examples: verify(8) cache, tlsmgr(8) caches, etc.). File:
+	master/master.c.
+
+20080226
+
+	Cleanup: the postfix command did not set argv[0] to a sane
+	value when invoking postfix-script. Reported by Victor
+	Duchovni. File: postfix/postfix.c.
+
+20080228
+
+	Bugfix: bounce(8) segfault on one-line template text.
+	Problem found by Sacha Chlytor. File: bounce/bounce_template.c.
+
+20080310
+
+	Safety: the SMTP server's Dovecot authentication client now
+	enforces the SASL mechanism output filter also on client
+	command input. File: src/xsasl/xsasl_dovecot_server.c.
+
+20080311
+
+	Bugfix (introduced 20070811): the MAIL and RCPT Milter
+	application call-backs no longer received {mail_addr} or
+	{rcpt_addr} information. Problem reported by Anton Yuzhaninov.
+	File: smtpd/smtpd.c.
+
+	Bugfix (introduced 20080207): "cleanup -v" panic because
+	the new "SMTP reply" request flag did not have a printable
+	name. File: global/cleanup_strflags.c.
+
+20080318
+
+	Human factors: the PCRE and regexp maps now give more
+	comprehensible error messages when people make the common
+	mistake of indenting if/endif blocks. Files: util/dict_pcre.c,
+	util/dict_regexp.c.
+
+20080324
+
+	Cleanup: the event_drain() function is now a proper event
+	processing loop. File: util/events.c
+
+	Feature: when the "postmap -q -" command reads lookup keys
+	from standard input, it now understands RFC822 and MIME
+	message format. Specify -h or -b to use headers or body
+	lines as lookup keys, and specify -hm or -bm to simulate
+	header_checks or body_checks.  The postmap -h option (without
+	-m) will be compatible with a future postcat -h option.
+	File: postmap/postmap.c.
+
+20080411
+
+	Bugfix (introduced Postfix 2.0): after "warn_if_reject
+	reject_unlisted_recipient/sender", the SMTP server mistakenly
+	remembered that recipient/sender validation was already
+	done. File: smtpd/smtpd_check.c.
+
+	Bugfix (introduced Postfix 2.3): the queue manager would
+	initialize missing client logging attributes (from xforward)
+	with real client attributes. Fix: enable this backwards
+	compatibility feature only with queue files that don't
+	contain logging attributes. Problem reported by Liviu Daia.
+	Files *qmgr/qmgr_message.c.
+
+20080424
+
+	Cleanup: some warning messages said "regexp" or "regexp
+	map" instead of "pcre map". File: util/dict_pcre.c.
+
+20080426
+
+	Feature: finer control over address verification error
+	handling and amount of information disclosed in the SMTP
+	reject message.  Parameters: unverified_recipient_defer_code,
+	unverified_recipient_reject_reason, unverified_sender_defer_code,
+	unverified_sender_reject_reason. If I don't do this properly,
+	then someone will do it anyway. File: src/smtpd/smtpd_check.c.
+
+20080428
+
+	Cleanup: the proxy_read_maps (Postfix 2.0) default setting
+	was not updated when adding sender/recipient_bcc_maps
+	(Postfix 2.1) and smtp/lmtp_generic_maps (Postfix 2.3).
+	File: global/mail_params.h.
+
+	Cleanup: the SMTP server's XFORWARD and XCLIENT support was
+	not updated when the smtpd_client_port_logging configuration
+	parameter was added. Code by Victor Duchovni. Files:
+	smtpd/smtpd.c, smtpd/smtpd_peer.c.
+
+20080508
+
+	Cleanup: delivery status notifications now prepend a
+	Return-Path: message header to the returned message.
+	File: bounce/bounce_notify_util.c.
+
+20080509
+
+	Bugfix: null-terminate CN comment string after sanitization.
+	File: smtpd/smtpd.c.
+
+20080510
+
+	Cleanup: when extracting peer and issuer common name from
+	TLS certificates, convert the result into UTF-8, and use
+	RFC 2047 encoding when logging these as Received: header
+	comment fields. Based remotely on code by Victor Duchovni.
+	Files: smtpd/smtpd.c, tls/tls_verify.c.
+
+20080511
+
+	Cleanup: the RFC 2047 encoding of RFC*822 comments is too
+	problematic.  The text that explains the problems is as
+	long as the code itself.  That is usually a good indication
+	that code is not ready for use.  File: smtpd/smtpd.c.
+
+	Cleanup: block non-printable ASCII text in UTF8 encoded TLS
+	peer and issuer common names.  File: tls/tls_verify.c.
+
+20080602
+
+	Workaround: avoid watchdog timeout in the local pickup
+	daemon when the cleanup server expands a very large virtual
+	alias list. Files: master/trigger_server.c, pickup/pickup.c.
+
+20080603
+
+	Workaround: avoid "bad address pattern" errors with non-address
+	patterns in namadr_list_match() calls. File: util/match_ops.c.
+
+	Feature: print fsstone elapsed time with sub-second time
+	resolution.  Kenji Kikuchi. File: fsstone/fsstone.c.
+
+20080606
+
+	Bitrot: "make test" was broken due to recent changes in
+	code and due to recent changes at mail-abuse.org.
+
+20080618
+
+	Add a note to SMTP session transcript email messages that
+	other details may be found in the maillog file.  Files:
+	smtpd/smtpd_chat.c, smtp/smtp_chat.c.
+
+20080620
+
+	Cleanup: with the "Before-queue content filter", RFC3848
+	information was not added to the headers. Carlos Velasco.
+	File smtpd/smtpd.c.
+
+20080621
+
+	Cleanup: include unread byte count in the SMTP server's "lost
+	connection after DATA (xx bytes)" logging. Files: smtpd/smtpd.c.
+
+20080629
+
+	Bugfix (introduced Postfix 2.2): multiple inconsistencies
+	in SASL support after introduction of TLS.  The Postfix
+	SMTP server 1) complained about plain-text SASL configuration
+	details when SASL was forbidden for plain-text sessions,
+	and 2) ignored the smtpd_tls_auth_only parameter setting
+	when built without TLS support.  Files: smtpd/smtpd.c,
+	smtpd/smtpd_check.c, smtpd/smtpd_sasl_glue.[hc],
+	smtpd/smtpd_state.c.
+
+	Some clarification about recipient address versus domain,
+	and recipients per message versus session. File:
+	proto/postconf.proto.
+
+	The description of SASL authentication attributes was
+	garbled.  File: pipe/pipe.c.
+
+	Information: the master(8) server now logs the version
+	besides the configuration directory upon "postfix reload".
+	File: master/master.c.
+
+20080717
+
+	Cleanup: a poorly-implemented integer overflow check for
+	TCP MSS calculation had the unexpected effect that people
+	broke Postfix on LP64 systems while attempting to silence
+	a compiler warning.  File: util/vstream_tweak.c.
+
+20080721
+
+	The cleanup server now rejects undisclosed_recipients_header
+	parameter values with invalid message header syntax.
+	File: cleanup/cleanup_message.c.
+
+20080725
+
+	Paranoia: defer delivery when a mailbox file is not owned
+	by the recipient. Sebastian Krahmer, SuSE.  Files:
+	local/mailbox.c, virtual/mailbox.c.
+
+20080804
+
+	Bugfix: dangling pointer in vstring_sprintf_prepend().
+	File: util/vstring.c.
+
+20080814
+
+	Security: some systems have changed their link() semantics,
+	and will hardlink a symlink, contrary to POSIX and XPG4.
+	Sebastian Krahmer, SuSE. File: util/safe_open.c.
+
+	The solution introduces the following incompatible change:
+	when the target of mail delivery is a symlink, the parent
+	directory of that symlink must now be writable by root only
+	(in addition to the already existing requirement that the
+	symlink itself is owned by root).  This change will break
+	legitimate configurations that deliver mail to a symbolic
+	link in a directory with less restrictive permissions.
+
+20080815
+
+	Feature: the milter_default_action parameter now accepts
+	the "quarantine" action. This works like "accept" but also
+	freezes the mail in the "hold" queue. File: milter/milter8.c.
+
+	Robustness: transition from setjmp()/longjmp() to the signal
+	mask saving/restoring versions sigsetjmp()/siglongjmp().
+	These functions have been around for 15 years, but they
+	have had bugs on supported platforms, so makedefs tests for
+	them.  Files: makedefs, util/sys_defs.h, util/vstream.h.
+
+20080822
+
+	Cleanup: the proxymap_service_name and proxywrite_service_name
+	parameters make the proxymap service names configurable.
+	This paves the way for a future option where the proxymap
+	services are accessible via TCP so that they can be shared
+	among multiple Postfix hosts.  File: global/dict_proxy.c.
+
+	Feature: MacOS X support for kqueue style event handling,
+	with workaround for broken MacOS X versions.  Files:
+	util/sys_defs.h, makedefs.
+
+	Cleanup: the makedefs script now keeps its test programs
+	in a directory makedefs.d, instead of inlining them as
+	fragile "here documents". Files: makedefs, makedefs.d/*.
+
+20080823
+
+	Feature: IPv6 dns blocklist lookup. File: smtpd/smtpd_check.c.
+
+20080824
+
+	Cleanup: untangled the MacOS X version dependent sections
+	in the makedefs script, to make future updates easier. File:
+	makedefs.
+
+	Cleanup: don't log multiple Milter "hold" actions for the
+	same email message. File: cleanup/cleanup_milter.c.
+
+20080826
+
+	Cleanup: moving test programs from makedefs into a makedefs.d
+	directory brought more pain than gain.
+
+	Cleanup: untangled the Linux version dependent sections in
+	the makedefs script, to make future updates easier. File:
+	makedefs.
+
+	Documentation: MacOS process limit configuration by Quanah
+	Gibson-Mount.  File: proto/TUNING_README.html.
+
+	Feature: smtp-sink -M option to terminate after receiving
+	a specified number of messages. Laurent Gentil. File:
+	smtpstone/smtp-sink.c.
+
+	Bugfix (introduced Postfix 2.4): epoll file descriptor leak.
+	With Postfix >= 2.4 on Linux >= 2.6, Postfix has an epoll
+	file descriptor leak when it executes non-Postfix commands
+	in, for example, user-controlled $HOME/.forward files.  A
+	local user can access a leaked epoll file descriptor to
+	implement a denial of service attack on Postfix. Data
+	confidentiality and integrity are not affected.  File:
+	util/events.c.
+
+20080903
+
+	Don't enable kqueue (which requires poll) support on
+	MacOS X. File: makedefs.
+
+	Cleanup: remove obsolete Rhapsody and MacOS targets from
+	makedefs.
+
+20080929
+
+	Workaround: don't log "file has 2 links" warnings when the
+	condition appears to be temporary. As kernels have evolved
+	from non-interruptible system calls towards fine-grained
+	locks, the showq command has become likely to observe a
+	file while the queue manager is in the middle of a rename
+	operation, when the file has links to both the old and new
+	name.  File: global/mail_open_ok.c.
+
+	Workaround: don't loop forever when write() fails with a
+	persistent EAGAIN error on a writable file descriptor.
+	File: util/write_buf.c.  
+
+20081003
+
+	Bugfix (introduced Postfix 2.1): when XFORWARD support was
+	introduced with Postfix 2.1, the specification failed to
+	clearly distinguish between missing and non-existent client
+	information. This ambiguity affected the implementation:
+	in $name expansions by delivery agents, unknown client
+	hostnames could became empty strings (as if a submission
+	was local), and local submissions could appear to originate
+	from an SMTP-based content filter.  This was fixed with a
+	a minor semantic change to the XFORWARD protocol.  Files:
+	smtpd/smtpd.c, qmqpd/qmqpd.c, smtp/smtp_proto.c,
+	cleanup/cleanup_envelope.c, proto/XFORWARD.html. Note: the
+	changes to propagate local submission details were undone
+	20082012.
+
+	Feature: a DUNNO lookup result in per_sender_relayhost_maps
+	stops the search without replacing the next-hop destination.
+	File: trivial-rewrite/resolve.c.
+
+20081005
+
+	Bugfix: further refinements to the handling of missing or
+	non-existent remote client attributes. Files: smtpd/smtpd.c,
+	smtpd/smtpd.h.
+
+	Documentation: the XFORWARD specification of the ADDR
+	attribute did not agree with the actual on-the-wire protocol.
+	Since we can't change already existing deployments, the
+	spec has been updated. File: proto/XFORWARD_README.html.
+
+20081006
+
+	Bugfix: further refinements to the handling of remote client
+	attributes.  Introduced a dummy "we have forwarded client
+	info" record, to eliminate the need for the backwards
+	incompatible queue file change that was introduced 20081003.
+	Files: smtpd/smtpd.c, cleanup/cleanup_envelope.c,
+	*qmgr/qmgr_message.c.
+
+	Security: hardened the proxymap client, in case it ever
+	ends up in a set-gid program. File: global/dict_proxy.c.
+
+20081007
+
+	Workaround: undo the proxymap client change. It broke
+	chrooted servers when they attempted to reconnect to the
+	proxy read/write service. File: global/dict_proxy.c.
+
+20081008
+
+	Safety: added checks that $queue_directory/pid is owned by
+	root, and that $queue_directory/saved is owned by $mail_owner.
+	File: conf/postfix-script.
+
+20081010
+
+	Feature: controls for opportunistic TLS protocols and
+	ciphers. The smtp_tls_protocols, smtp_tls_ciphers, and
+	equivalent parameters for lmtp and smtpd provide global
+	settings; the SMTP client TLS policy table provides ciphers
+	and protocols settings for specific peers.  Code by Victor
+	Duchovni. Files: smtp/smtp.c, smtp/smtp_session.c, smtpd/smtpd.c
+	and documentation.
+
+20081012
+
+	Cleanup: simplify the 20081003 changes and don't try to
+	propagate local submission information through XFORWARD.
+	Files: smtpd/smtpd.c, qmqpd/qmqpd.c, smtp/smtp_proto.c,
+	cleanup/cleanup_envelope.c, proto/XFORWARD.html.
+
+20081015
+
+	Bugfix: GLIBC API version detection. Rob Foehl. File:
+	util/sys_defs.h.
+
+20081022
+
+	Documentation: removed inapplicable daemon_timeout reference
+	from qmgr(8), oqmgr(8), pickup(8). These daemons need to
+	use a much shorter watchdog timer.
+
+20081108
+
+	Feature: smtp_sasl_tls_verified_security_options is no
+	longer #ifdef SNAPSHOT.
+
+	Feature: elliptic curve support. This requires OpenSSL
+	version 0.9.9 or later. Victor Duchovni. Files: TLS_README,
+	smtpd/smtpd.c, smtp/smtp.c, tls/tls_dh.c, tls/tls_certkey.c,
+	tls/tls_server.c, tls/tls_client.c, tls/tls.h, tls/tls_misc.c.
+
+	Bugfix (introduced Postfix 2.5): the Postfix SMTP server
+	did not ask for a client certificate with "smtpd_tls_req_ccert
+	= yes". Reported by Rob Foehl. File: smtpd/smtpd.c.
+
+20081109
+
+	Cleanup: confusing names of variables. File: smtpd/smtpd.c.
+
+20081126
+
+	Documentation: pcre_table(5) incorrectly claimed that the
+	'x' flag supports #comment after text. File: proto/pcre_table.
+
+20081202
+
+	Cleanup: vstream_bufstat() provides a more systematic
+	approach to get information about VSTREAM buffers. The
+	vstream_peek() function is now a backwards compatibility
+	wrapper.  Files: util/vstream.[hc].
+
+	Cleanup: the SMTP server should warn about "lost connection
+	after QUIT" only when the "." reply was pipelined together
+	with the "QUIT" reply. File: smtpd/smtpd.c.
+
+	Cleanup: the SMTP client's code was duplicating buffer
+	management that was already done in the VSTREAM module.
+	File: smtp/smtp_proto.c.
+
+20081203
+
+	Cleanup: adjust the VSTREAM buffer strategy when reusing
+	an SMTP connection with a large TCP MSS value. File:
+	smtp/smtp_reuse.c.
+
+20081204
+
+	Cleanup: state the SMTP client PIPELINING implementation's
+	dependency on monotonic VSTREAM buffer size behavior, and
+	add some checks for boundary cases with VSTREAM buffer size
+	change requests. Files: util/vstream.c, smtp/smtp_proto.c.
+
+20081205
+
+	Fix 20081202 flush code. Victor Duchovni. File: smtpd/smtpd.c.
+
+	Safety: add another check to "postfix check", in this case
+	for group or other writable queue_directory. File:
+	conf/postfix-script.
+
+20081217
+
+	Debugging: ad-hoc code to log the TLS error stack after
+	VSTREAM read/write error.  File: tls/tls_bio_ops.c. In a
+	better implementation, each I/O "object" would provide an
+	optional error reporting method (besides timed_read and
+	timed_write) that could be queried via the vstream module.
+
+20081222
+
+	Documentation: log the "*" pattern as the last transport
+	map lookup. File: proto/transport.
+
+20090103
+
+	Documentation: rewrote NFS_README, to clarify the support
+	status of Postfix and NFS, and to describe the NFS workarounds
+	that Postfix actually implements.
+
+20090106
+
+	Feature: "postconf -# parametername ..." to comment out
+	named parameter entries. Victor Duchovni.  File:
+	postconf/postconf.c.
+
+20090107
+
+	Library: edit_file(3) module for cooperative editing of a
+	file. Inspired by the postconf command, this creates a new
+	version under a deterministic temporary name and renames
+	it into place. The implementation uses an open/lock/stat
+	protocol before updating the new file, and rename/unlock/close
+	afterwards.  Based on pieces of code by Victor Duchovni,
+	with minor improvements by Wietse.  Files: util/edit_file.[hc].
+
+	Cleanup: the postconf command now uses the edit_file(3)
+	module to manage collisions when multiple processes attempt
+	to update the main.cf file.
+
+20090108
+
+	Feature: master_service_disable parameter (default: empty)
+	to easily turn off/on master.cf services by type or by name
+	and type. For example, to turn off the main SMTP listener
+	use "master_service_disable = smtp.inet", and to turn off
+	all TCP/IP listeners use "master_service_disable = inet".
+	This immediately terminates all processes that provide the
+	specified services. The master_service_disable feature does
+	not distinguish services by their privacy property; some
+	day, clients will not need to specify that anymore.  Files:
+	global/mail_params.h, master/master.c, master/master_vars.c,
+	master/master_ent.c.
+
+	Bugfix (introduced May 19, 1997): removing a parameter
+	setting from main.cf did not reset the parameter to its
+	default value. This was a problem only in the master daemon.
+	File: global/mail_conf.c, master/master_vars.c.
+
+20090109
+
+	Cleanup: "defer" action in access maps, and a corresponding
+	access_map_defer_code parameter. No idea what was behind
+	this omission.  Files: global/mail_params.h, smtpd/smtpd.c,
+	smtpd/smtpd_check.c, proto/access.
+
+	Workaround: specify "tcp_windowsize = 65535" (or less) to
+	work around broken TCP window scaling implementations.  This
+	is perhaps easier than collecting tcpdump output and tuning
+	kernel parameters by hand.  See RELEASE_NOTES for how to
+	change this setting without stopping Postfix.  Files:
+	util/inet_connect.c, inet_listen.c, global/mail_params.[hc].
+
+20090110
+
+	Cleanup: create separate code modules for TCP window size
+	handling, master.cf service name matching, and main.cf
+	change monitoring.  Files: util/inet_windowsize.c,
+	global/match_service.c, master/master_watch.c.
+
+	Feature: TCP window size override for the Postfix SMTP/LMTP
+	client, and for the smtp-source and smtp-sink test programs.
+	Files: smtp/smtp_connect.c, smtpstone/smtp-source.c,
+	smtpstone/smtp-sink.c.
+
+20090114
+
+	Bugfix: VERP now uses the Postfix original recipient, if
+	available, because that is what the VERP consumer expects.
+	Files: *qmgr/qmgr_deliver.c, bounce/bounce_notify_verp.c.
+
+	Safety: extra check for broken third-party patches that
+	allow file size limit < message size limit. This can cause
+	mail to be stuck in the queue forever.
+
+	Invisible change, in preparation for multi-instance support.
+	Except for main.cf and master.cf, all files are optional
+	for non-default Postfix configuration directories. File:
+	conf/postfix-files.
+
+20090115
+
+	Cleanup: rewrote the 20090114 VERP bugfix, to replace code
+	that "works" by code that is "right". Files: *qmgr/qmgr_deliver.c,
+	bounce/bounce_notify_verp.c, global/verp_sender.c.
+
+20090118
+
+	Documentation: some URLs to enable/disable client-side TLS
+	jumped into the middle of an enumeration.  File:
+	proto/TLS_README.html.
+
+20090119-21
+
+	Feature: multi-instance manager plug-in API.  A sample
+	multi-instance manager with instructions is available as
+	$daemon_directory/postfix-wrapper. The plug-in API itself
+	is described in postfix-wrapper(5).  Files: postfix/postfix.c,
+	global/mail_params.[hc], proto/postfix-wrapper,
+	conf/postfix-wrapper, conf/postfix-script, conf/postfix-files.
+
+	Support to check/update shared files only in the context
+	of the default Postfix instance. Files: conf/post-install,
+	conf/postfix-script.
+
+20090122
+
+	Refinements: the multi-instance manager always replaces
+	"start" by "check" when a Postfix instance is multi-instance
+	disabled, so that problems will still be reported; polish
+	documentation; delete unnecessary multi_instance_order
+	parameter.  Files: conf/postfix-wrapper, proto/postfix-wrapper,
+	global/mail_params.[hc] and documentation.
+
+	Bugfix: the data_directory was not automatically created!
+	File: conf/postfix-files.
+
+20090123
+
+	More little fixes in the "trivial but useful" postfix-wrapper
+	including instructions. It's ready for testing in the field.
+	File: conf/postfix-wrapper.
+
+20090125
+
+	Documentation: more precise description of multi-instance
+	manager API, and minor edits of the example program. Files:
+	conf/postfix-wrapper, proto/postfix-wrapper.
+
+20090208
+
+	Cleanup: enable multi-instance shared-file logic only when
+	the instance is listed in multi_instance_directories.  Files:
+	conf/post-install, conf/postfix-script.
+
+20090210
+
+	Feature: specify "reject_tempfail_action = defer" to
+	immediately defer a remote SMTP client request after a
+	reject-type restriction fails with a temporary error.  Based
+	on code by Rob Foehl. File: smtpd/smtpd_check.c.
+
+	Feature: finer control of reject_tempfail_action with
+	unknown_address_tempfail_action, unverified_sender_tempfail_action
+	unverified_recipient_tempfail_action, and
+	unknown_helo_hostname_tempfail_action. See documentation
+	for details.  File: smtpd/smtpd_check.c.
+
+20090211
+
+	Workaround: pass the SMTP server socket's local and remote
+	peer address information to the Dovecot authentication server.
+	This is incomplete code: it ignores XCLIENT server address
+	overrides.  File: xsasl/xsasl_dovecot_server.c.
+
+20090212
+
+	Testing revealed that with mumble_tempfail_action=defer,
+	the "defer" action was ignored.  Cause: the DEFER_IF_PERMIT[0-9]
+	macros lost the SMTPD_CHECK_REJECT result value.  File:
+	smtpd/smtpd_check.c.
+
+	Feature: stress-dependent smtpd_timeout (normal: 300s,
+	overload: 10s), smtpd_hard_error_limit (normal: 20, overload:
+	1) and smtpd_junk_command_limit (normal: 100, overload: 1).
+	Files: global/mail_params.h, global/mail_conf_nint.c,
+	master/*_server.c, smtpd/smtpd.c.
+
+20090213
+
+	Fine tuning: don't enforce smtpd_junk_command_limit for
+	XCLIENT and XFORWARD commands.  These commands can be issued
+	only by authorized clients. File: src/smtpd/smtpd.c.
+
+20090215
+
+	Feature: the Postfix SMTP server hangs up after replying
+	with "521". This makes overload handling more effective. 
+	See also RFC 1846.  File: smtpd/smtpd.c.
+
+	Feature: postmulti mult-instance manager command, very
+	lightly tested. The MULTI_INSTANCE_README still needs to
+	be proofread.  Originally by Victor Duchovni.  Files:
+	src/postmulti/*, proto/MULTI_INSTANCE_README.html,
+	conf/postmulti-script.
+
+20090216-24
+
+	Cleanup: assorted code cleanups in postmulti.  File:
+	src/postmulti/postmulti.c.
+
+20090223
+
+	Cleanup: multiple instances of the same global.  Files:
+	util/inet_windowsize.c, util/inet_listen.c.
+
+20090228
+
+	Cleanup: the Postfix SMTP server now maintains a per-session
+	"improper command pipelining detected" flag. This flag can
+	be tested at any time with reject_unauth_pipelining, and
+	is raised whenever a client command is followed by unexpected
+	commands or message content.  Files: smtpd/smtpd.c,
+	smtpd/smtpd_check.c.
+
+	Logging: the Postfix SMTP server now logs the first command
+	pipelining transgression as "improper command pipelining
+	after <command> from <hostname>[<hostaddress>]".
+
+	Cleanup: after DATA command failure, log "(approximately
+	XX bytes)" only if Postfix actually accepted the DATA
+	command.  File: smtpd/smtpd.c.
+
+20090303
+
+	Cleanup: word smithing of "sendmail -bv" probe message.
+	File: sendmail/sendmail.c.
+
+	Cleanup: OpenLDAP now provides a sane solution for conflicts
+	with PAM ldap-over-tls. Victor Duchovni.  File: global/dict_ldap.c.
+
+20090304
+
+	Cleanup: skip over suspended or throttled queues while
+	looking for delivery requests. File: *qmgr/qmgr_transport.c.
+
+20090305
+
+	Bugfix: in the "new queue manager", the _destination_rate_delay
+	code needed to postpone the job scheduler updates after
+	delivery completion, otherwise the scheduler could loop on
+	blocked jobs.  Victor & Wietse.  File: qmgr/qmgr_entry.c,
+	qmgr/qmgr_queue.c, qmgr/qmgr_job.c.
+
+	Cleanup: report a "queue file write error", instead of
+	passing though bogus 2xx replies from proxy filters to SMTP
+	clients.  File: smtpd/smtpd_proxy.c.
+
+20090307
+
+	Cleanup: with "lmtp_assume_final = yes", the Postfix LMTP
+	delivery agent assumes that delivery is final when talking
+	to an LMTP server that announces no DSN support.  Otherwise,
+	the Postfix LMTP delivery agent assumes that delivery is
+	"relayed", to maintain compatibility with simple LMTP-based
+	content filters.  Based on code by Michel Sebastien, ATOS
+	Origin.  File: smtp/smtp_rcpt.c.
+
+20090310
+
+	Bugfix: Postfix used mumble_concurrency_failed_cohort_limit
+	instead of mumble_destination_concurrency_failed_cohort_limit
+	as documented. File: global/mail_params.h.
+
+20090330
+
+	Cleanup: add (Resent-) From:, Date:, Message-ID: or To:
+	headers only when clients match $local_header_rewrite_clients.
+	Specify "always_add_missing_headers = yes" for backwards
+	compatibility.  Adding such headers to remote mail can break
+	DKIM signatures that cover headers that are not present.
+	File: cleanup/cleanup_message.c.
+
+20090415
+
+	Workaround: to avoid unnecessary "fatal" delivery agent
+	exits, delivery agents retry getting a shared lock on a
+	queue file.  This is necessary since the queue manager's
+	behavior was changed years ago to refill the in-memory
+	recipient list before it was completely empty.  File:
+	global/deliver_request.c.
+
+	Documentation: updated STRESS_README.
+
+20090416
+
+	Workaround: some AWK implementations have a limit of 10
+	output files and lack a working close() function. It is too
+	much trouble to find out what systems have this limitation,
+	and where, if any, such systems store their XPG4-compatible
+	AWK program.  So instead we generate a stream of here
+	documents and let the shell split the stream into files.
+	File: postconf/extract.awk.
+
+	Documentation: clarification of certificate file usage.
+	Victor Duchovni.  Files: proto/postconf.proto,
+	proto/TLS_README.html.
+
+	Feature: pass a "TLS is active" flag to the server-side
+	SASL support.  Based on code by Timo Sirainen, except that
+	the implementation uses an extensible API so that it will
+	be less painful to add more attributes in future Postfix
+	versions.  Files: xsasl/xsasl.h, xsasl/xsasl_*server.c,
+	smtpd/smtpd_sasl_glue.c.
+
+20090417
+
+	Documentation: re-generate READMEs and manpages for updated
+	hyperlinks.
+
+	Documentation: missing hyperlinks and missing parameters
+	in manpages. File: mantools/postlink, mantools/check-postlink.
+
+20090418
+
+	Cleanup: use the extensible API to pass SMTP client address
+	information to the dovecot SASL plugin, and prepare for
+	passing server address information. Files: xsasl/xsasl.h,
+	xsasl/xsasl_dovecot_server.c, smtpd/smtpd_sasl_glue.c.
+
+	Same extensible API transformation for the SASL client-side
+	code to make future extensions less painful. Files:
+	xsasl/xsasl.h, xsasl/xsasl*client.c, smtp/smtp_sasl_glue.c.
+
+	More postlink fixes. File: mantools/postlink.
+
+20090419
+
+	Bugfix: don't re-enable SIGHUP if it is ignored in the
+	parent. This may cause random "Postfix integrity check
+	failed" errors at boot time (POSIX SIGHUP death), causing
+	Postfix not to start. We duplicate code from postdrop and
+	thus avoid past mistakes.  File: postsuper/postsuper.c.
+
+	Robustness: don't re-enable SIGTERM if it is ignored in the
+	parent. Files: postsuper/postsuper.c, postdrop/postdrop.c.
+
+20090422
+
+	Undo delivery agent change 20090415. The queue manager never
+	locks a queue file to read additional recipients into memory,
+	so if a delivery agent runs into a locked file, then something
+	is seriously wrong. File: global/deliver_request.c.
+
+20090424
+
+	Compatibility: the Postfix SMTP client no longer uses the
+	obsolete SSLv2 by default for opportunistic encryption.
+	This has nothing to do with security (we're willing to send
+	plaintext over an unauthenticated connection) but with the
+	loss of advanced options that give better performance.
+	Victor Duchovni. Files: proto/postconf.proto, global/mail_params.h.
+
+20090426
+
+	Feature: more accurate support for Milter macros {mail_addr}
+	and {rcpt_addr}, and new support for Milter macros {mail_host},
+	{mail_mailer}, {rcpt_host}, and {rcpt_mailer}.  Files:
+	milter/milter.[hc], smtpd/smtpd.[hc], smtpd/smtpd_milter.c,
+	smtpd/smtpd_resolve.c.
+
+	Feature: support to report rejected recipients to Milters
+	(SMFIP_RCPT_REJ). Postfix reports the event as decribed in
+	Sendmail 8.14.0 documentation: {rcpt_mailer} = "error",
+	{rcpt_host} = enhanced status code (e.g., "5.7.1"), and
+	{rcpt_addr} = reason to reject (e.g., "Relay access denied").
+	Files: milter/milter.[hc], milter/milter8.c, smtpd/smtpd.[hc],
+	smtpd/smtpd_milter.c.
+
+20090427
+
+	Feature: Milter support for replacing the envelope sender
+	and adding recipients (SMFIR_CHGFROM, SMFIR_ADDRCPT_PAR).
+	This support currently ignores ESMTP command parameters.
+	Files: milter/milter8.c, cleanup/cleanup_milter.c.
+
+20090428
+
+	Compatibility: to make all the new Milter features usable,
+	raise the default milter_protocol setting from 2 to 6.
+	This has been tested with a Sendmail 8.14 libmilter.
+	File: global/mail_params.h.
+
+	Bugfix: don't disable MIME parsing with smtp_header_checks,
+	smtp_mime_header_checks, smtp_nested_header_checks or with
+	smtp_body_checks. Bug reported by Victor. File: smtp/smtp_proto.c.
+
+	Code cleanups: respect VSTRING invariants by using VSTRING_RESET
+	and VSTRING_TERMINATE instead of directly groping the
+	underlying character buffer. Files: global/dsn_buf.c,
+	milter/milter8.c.
+
+20090507
+
+	main.cf:tls_random_source now defaults to /dev/arandom on
+	OpenBSD.  This device was introduced before Postfix development
+	began. Files: util/sys_defs.h, global/mail_params.h.
+
+20090510
+
+	Code cleanups: while emulating SMTP client requests for
+	Milter applications, use user@domain form addresses as
+	required by the SMTP protocol, instead of bare usernames.
+	This avoids hard to debug errors from some Milter applications.
+	Files: cleanup/cleanup_envelope.c, cleanup/cleanup_extracted.c,
+	cleanup/cleanup_addr.c.
+
+20090511
+
+	Code cleanups: don't clobber -o command-line arguments so
+	that Linux people can debug daemon command lines more easily.
+	Files: master/*server.c.
+
+20090513
+
+	Code cleanups: better parsing of Postfix daemon "-o"
+	command-line options, with better error handling.  Files:
+	master/*server.c.
+
+20090518
+
+	Documentation: missing dummy entries for lmtp_mumble_checks.
+	File: proto/postconf.proto.
+
+20090519
+
+	Bugfix (introduced: Postfix 2.3, but did not cause trouble
+	until 20090427).  Queue file corruption with (smtpd_milters
+	or non_smtpd_milters) enabled, AND with delay_warning_time
+	enabled, AND with short envelope sender addresses (e.g.,
+	local submissions with bare usernames, but not bounces).
+	The queue file would be corrupted when the delay_warning_time
+	record was marked as "done" after sending the "your mail
+	is delayed" notice.  File: qmgr/qmgr_message.c.
+
+20090522
+
+	Bugfix (introduced: Postfix 2.3).  The cleanup server
+	rejected mail with records of type REC_TYPE_DRCP (recipient
+	deleted by Milter), but such records could be present in
+	mail re-submitted with "postsuper -r". Found during code
+	review. Files: global/record.h, cleanup/cleanup_envelope.c.
+
+20090524
+
+	Feature: new postcat options: -e (print envelope), -h (print
+	header), and -b (print body). Specify "postcat -bh" to
+	suppress information about envelope records, and "postcat
+	-h" to get the message header only. With large messages,
+	"postcat -h" is much faster than manually stripping the
+	message body from the output. File: postcat/postcat.c.
+
+20090528
+
+	Bugfix (introduced: Postfix 2.6 change 20080629): with
+	plaintext sessions, smtpd_tls_auth_only=yes caused spurious
+	warnings with reject_authenticated_sender_login_mismatch,
+	and broke reject_unauthenticated_sender_login_mismatch and
+	reject_sender_login_mismatch.  Based on fix by Victor
+	Duchovni. File: smtpd/smtpd_check.c.
+
+20090603
+
+	Cleanup: Postfix 2.3 adopted a file descriptor passing
+	workaround for OpenBSD. This workaround was hard-coded for
+	all platforms because there were no have adverse effects.
+	This is no longer the case: OpenBSD is fixed, and NetBSD
+	does not like the workaround. We now default back to the
+	non-workaround code and turn on the workaround dynamically.
+	Files: util/unix_send_fd.c, unix_recv_fd.c, unix_pass_fd_fix.c.
+
+20090605
+
+	Portability: modern kernels below ancient user-land. File:
+	makedefs.
+
+20090606
+
+	Feature: post-Milter header checks, with all actions except
+	PREPEND. To enable, specify for example "milter_header_checks
+	= pcre:/path/to/file".  Files: cleanup/cleanup_init.c,
+	cleanup/cleanup_milter.c, cleanup/cleanup_extracted.c,
+	cleanup/cleanup_state.c.
+
+	Bugfix: non-portable command pathname in postmulti-script.
+
+	Safety: "postmulti -e destroy" no longer attempts to remove
+	files that are created AFTER "postmulti -e create". Rationale:
+	by design, postfix queue/data directories are not trusted;
+	actions within those directory trees must not affect files
+	outside those those trees (e.g. by symlink race attacks).
+	We don't want to be nailed with a bunch of CVEs for unsafe
+	pathname handling.  File: conf/postmulti-script.
+
+20090607
+
+	Cleanup: revise milter_header_checks action implementation,
+	and avoid redundant logging and work when milter_header_checks
+	and Milters make redundant or conflicting decisions. File:
+	cleanup_milter.c.
+
+20090614
+
+	Preliminary postscreen triage server for all inbound SMTP
+	connections.  This is not a proxy: it rejects bad clients
+	and forwards the rest of the connections to a real Postfix
+	SMTP server. The initial version does a simple "friend or
+	foe" based on whether the client starts talking too soon.
+	Decisions are cached, so "good" clients have no overhead.
+	File: postscreen/postscreen.c.
+
+	Cleanup: more robust code for receiving file descriptors
+	via the "pass" master service protocol.  File:
+	util/upass_listen.c.
+
+20090617
+
+	Temporary helper daemon that does parallel DNSBL lookups
+	for postscreen(8). It logs successful lookups to the maillog
+	file without blocking the client. postscreen(8) will use
+	the results in a later non-production version. To enable
+	DNSBL lookups, specify "postscreen_dnsbl_sites = name,
+	name, etc". and restart postscreen(8) with "postfix reload".
+	File: src/dnsblog/dnblog.c.
+
+20090618
+
+	postscreen(8) logging and actions are now documented in the
+	postscreen(8) manpage. When a client is listed in DNSBLs
+	specified with postscreen_dnsbl_sites, it is no longer
+	whitelisted. Instead the number of blocklist hits is logged.
+	File: postscreen/postscreen.c.
+
+20090619
+
+	postscreen(8) by default no longer immediately drops
+	connections. Specify "postscreen_greet_action = drop" and
+	"postscreen_hangup_action = drop" for the old behavior.
+	There is also a new postscreen_dnsbl_action parameter, for
+	completeness.  File: postscreen/postscreen.c.
+
+20090708
+
+	Portability: FreeBSD 8 has closefrom(). File: uti/sys_defs.h.
+
+20090710
+
+	Bugfix (introduced Postfix 2.3): Postfix got out of sync
+	with a Milter application after the application sent a
+	"quarantine" request at end-of-message time. The milter 
+	application would still be in the end-of-message state,
+	while Postfix would already be working on the next SMTP
+	event (typically, QUIT or MAIL FROM).  Problem diagnosed
+	with help from Alban Deniz. File: milter/milter8.c.
+
+20090711-2
+
+	New "event_server" Postfix server framework. It is similar
+	to the "multi_server" framework but does not manage client
+	I/O events.  This framework is suitable for servers such
+	as postscreen that have complex event management requirements.
+	File: master/event_server.c.
+
+	New event_fork() primitive to resume event processing in a
+	child process after it is created with fork(). This is
+	needed by postscreen to complete work-in-progress in the
+	background after "postfix reload". File: util/events.c.
+
+	Cleanup: postscreen migrated to the "event_server" framework.
+	File: postscreen/postscreen.c.
+
+20090712
+
+	Cleanup: ${multi_instance_name:postfix}${multi_instance_name
+	?$multi_instance_name} garbage in Postfix logging is now
+	hopefully gone.  File: global/mail_task.c.
+
+20090715
+
+	Documentation: as of Postfix 2.6, the reject_unauth_pipelining
+	feature can be used meaningfully at any protocol stage.
+	File: proto/postconf.proto.
+
+20090717
+
+	Cleanup: postscreen PREGREET detection now uses non-destructive
+	read, so that the real SMTP server can still receive the
+	HELO command (apparently some sites allow pregreeters to
+	talk to their servers).  File: postscreen/postscreen.c.
+
+20090805
+
+	Bugfix: don't panic when an unexpected smtpd access map is
+	specified. File: smtpd/smtpd_check.c.
+
+20090918
+
+	Bugfix (introduced Postfix 2.3): with Milter RCPT TO replies
+	turned off, there was no automatic flush-before-read on the
+	smtpd-to-milter stream, because the read was done on the
+	cleanup-to-milter stream. Problem reported by Stephen Warren.
+	File: milter/milter8.c.
+
+20091005
+
+	Bugfix: core dump while printing error message for malformed
+	%<letter> sequence in LDAP, MySQL or PostgreSQL configuration.
+	File: global/db_common.c. Fix by Victor Duchovni.
+
+20091006
+
+	Feature: "postscreen_whitelist_networks = $mynetworks" (the
+	default) to avoid problems with buggy SMTP implementations
+	in network appliances.  Note: this feature never uses the
+	remote SMTP client hostname.  Files: global/addr_match_list.[hc],
+	postscreen/postscreen.c.
+
+	Feature: postscreen_blacklist_networks (default: empty) to
+	permanently blacklist hosts or networks. Address syntax is
+	as with mynetworks. Note: this feature never uses the remote
+	SMTP client hostname.  File: postscreen/postscreen.c.
+
+	Feature: postscreen_blacklist_action (default: continue)
+	to control what happens with a permanently blacklisted
+	client. File: postscreen/postscreen.c.
+
+20091007
+
+	Feature: hostname-based check_client_{mx,ns}_access,
+	check_reverse_client_hostname_{mx,ns}_access (the client
+	IP address is not used). Rob Foehl.  Files: smtpd/smtpd_check.c,
+	global/mail_params.h, proto/postconf.proto, mantools/postlink.
+
+20091008
+
+	Documentation: restructured the postscreen(8) manpage
+	as a sequence of tests. File: postscreen/postscreen.c.
+
+20091012
+
+	Bugfix: postmulti did not skip commands with -p.  Luca
+	Berra. File: postmulti/postmulti.c.
+
+20091023
+
+	Feature: specify "smtpd_command_filter = pcre:/file/name"
+	to replace remote SMTP client commands before they are
+	executed by the Postfix SMTP server. This a last-resort
+	tool to fix inter-operability problems.  See examples in
+	the postconf(5) manual page.  File: smtpd/smtpd.c.
+
+20091026
+
+	Cleanup: changed parameter evaluation order so that the
+	multi_instance_wrapper parameter value is evaluated after
+	the command and daemon directory parameters. File:
+	global/mail_params.h.
+
+20091101
+
+	Performance: specify "smtpd_proxy_options = speed_adjust"
+	to receive an entire message before sending it through a
+	before-queue content filter. This reduces the number of
+	simultaneous content filtering processes, and thus, the
+	system memory requirements.  Files: smtpd/smtpd.[hc],
+	smtpd/smtpd_proxy.[hc].
+
+20091103-4
+
+	Cleaned up the speed-adjust code, streamlined the error
+	handling, and updated documentation. Files: smtpd/smtpd.[hc],
+	smtpd/smtpd_proxy.[hc], proto/SMTPD_PROXY_README.html.
+
+20091105
+
+	Cleaning up after speed_adjust introduction: smtpd segfault
+	caused by an incomplete API change; refined the queue space
+	check; release scratch space immediately after delivering
+	mail to the before-queue filter. Files: smtpd.c, smtpd_proxy.c.
+
+20091110
+
+	Workaround: specify "smtp_tls_block_early_mail_reply = yes"
+	to detect a mail hijacking attack based on a TLS protocol
+	vulnerability (CVE-2009-3555). The attack involves prepending
+	malicious HELO/MAIL/RCPT/DATA commands to a Postfix SMTP
+	client TLS session. The attack would succeed with non-Postfix
+	SMTP servers that reply to the malicious commands after
+	negotiating the Postfix SMTP client TLS session. File:
+	smtp/smtp_proto.c.
+
+20091113
+
+	Workaround: skip interfaces without netmask, to avoid
+	segfaults (reported by Dmitry Karasik). Don't supply a dummy
+	null netmask, as that would turn Postfix into an open relay
+	(mynetworks = 0.0.0.0/0). File: util/inet_addr_local.c.
+
+	Bugfix: forgot to flush output to the smtpd_proxy speed-adjust
+	buffer before truncating the file. Reported by Mark Martinec,
+	fix by Victor Duchovni. File: smtpd/smtpd_proxy.c.
+
+20091114
+
+	Feature: specify "smtp_reply_filter = pcre:/file/name" to
+	replace remote SMTP server reply lines before they are
+	parsed by the Postfix SMTP client. This a last-resort tool
+	to fix inter-operability problems.  See examples in the
+	postconf(5) manual page.  File: smtp/smtp_chat.c.
+
+	Safety: don't send postmaster notifications to report
+	problems delivering (possible) postmaster notifications.
+	File: smtp/smtp_connect.c.
+
+20091121
+
+	Feature: sender_dependent_default_transport_maps, to override
+	the default transport in a sender-dependent manner. This
+	is not a transport_maps override, and therefore it does not
+	use the transport_maps syntax for null transport, null
+	nexthop, or null email address.
+
+20091127
+
+	Usability: the Postfix SMTP client now logs a warning that
+	wrappermode TLS is not supported, when configured to connect
+	to port smtps/465. File: smtp/smtp_connect.c.
+
+20091203
+
+	Safety: the postscreen daemon logs a warning when table
+	lookup is slow. Slow lookups cause postscreen to fall behind,
+	and worse, to catch up in bursts, which results in overload
+	elsewhere.  File: postscreen/postscreen.c.
+
+20091206
+
+	Feature: by popular demand, the Postfix SMTP server now
+	logs the before-queue content filter's end-of-message
+	accept/reject response.  File: smtpd/smtpd.c.
+
+20091209
+
+	Portability: as the result of continuous improvement,
+	Berkeley DB no longer allows fork-then-close. File:
+	postscreen/postscreen.c.
+
+	Bugfix: sender_dependent_relayhost_maps did not reject an
+	empty lookup result, and did not recognize lookup errors,
+	thus treating errors as "not found". Problem found during
+	code maintenance. File: trivial-rewrite/resolve.c.
+
+	Cleanup: the postscreen daemon now applies the permanent
+	whitelist first. It is a safety feature that prevents mail
+	from being blocked. File: postscreeb/postscreen.c.
+
+20091224
+
+	Bugfix (introduced 20041215): dict_dbm_sequence() did not
+	release the shared lock when the end of the sequence was
+	reached. File: util/dict_dbm.c.
+
+20091227
+
+	Cleanup: postscreen and verify periodic cache cleanup
+	(default: 12 hours after the previous cache cleanup run).
+	This is based on a new dict_cache(3) module that implements
+	a generalized version of the tlsmgr(8) cache maintenance
+	code.  Once the new dict_cache(3) code is burned in, the
+	tlsmgr(8) will be migrated to it. See the RELEASE_NOTES for
+	user interface details. Files: util/htable.[hc], util/dict_ht.c,
+	util/dict_cache.[hc], postscreen/postscreen.c, verify/verify.c.
+
+	Bugfix: the event handler starved I/O events when a timer
+	call-back routine scheduled a zero-delay timer request.
+	This bug was exposed when adding the new dict_cache(3)
+	module for cache expiration.  File: util/events.c.
+
+20091228
+
+	Cleanup: postscreen and verify periodic cache cleanup is
+	now optional (specify a null time interval between cache
+	cleanup runs).
+
+20091229
+
+	Cleanup: the address_verify_poll_count default parameter
+	value is now stress-dependent, so that the Postfix SMTP
+	server will not wait (up to 6 seconds) for the address
+	verification result. File: global/mail_params.h.
+
+	Final solution for the I/O event starvation problem when a
+	timer call-back schedules a zero-delay timer request.  File:
+	util/events.c.
+
+20091231
+
+	Cleanup: the non-shared, in-memory hash table is now
+	accessible as the "internal:" map type. This simplifies
+	code by eliminating some special cases. Files: util/dict_ht.c,
+	util/dict_open.c, and documentation.
+
+20100101
+
+	Bugfix: the mantools/postlink script applied hyperlinks
+	for the "virtual:" transport to "/etc/postfix/virtual:".
+	Symptom reported by Christoph Anton Mitterer.
+
+20100102
+
+	Workaround: don't report bogus Berkeley DB close errors as
+	fatal errors. All operations before close are already error
+	checked, so the data is known to be safe.  File: util/dict_db.c.
+
+20100107
+
+	Documentation: the access(5) manual page did not document
+	the "send 521 and disconnect" behavior in the Postfix SMTP
+	server (introduced with Postfix 2.6). File: proto/access.
+
+	Bugfix: the pickup daemon did not discard messages that
+	were requeued after all recipients were delivered (or
+	bounced), and the cleanup server tried to bounce such
+	messages. Files: pickup/pickup.c, global/cleanup_user.h.
+
+	Future proofing: redundant code in postdrop to reject a
+	submission without recipient record. File: postdrop/postdrop.c.
+
+20100109
+
+	Cleanup: "postcat -q" will now access files in the "saved"
+	queue directory (for corrupted queue files). As before, the
+	"postsuper" command will not, to avoid suddenly deleting
+	such files. Files: global/mail_queue.h postcat/postcat.c.
+
+20100113
+
+	Cleanup: don't supply the "-o stress" command-line option
+	with a single-process service. File: master/master_ent.c.
+
+20100115
+
+	Bugfix: the valid_hostname() fuction did not set the
+	"non-numeric" flag after encountering the '-' character.
+	Reported by Jan Schampera.  File: util/valid_hostname.c.
+
+20100116
+
+	Documentation: the content_filter and FILTER features never
+	supported the special cases of transport_maps. References
+	to transport_maps syntax are now removed from content filter
+	discussions.  Files: proto/postconf.proto, proto/FILTER_README.
+
+	Workaround: as of Postfix 2.3 the VRFY command did not allow
+	a mailbox address inside <>, which broke expectations.  RFC
+	2821 (and 5321) is vague about the VRFY request format, but
+	spends lots of text on the reply format.  File: smtpd/smtpd.c.
+
+20100117
+
+	Cleanup: when a content_filter parameter or FILTER command
+	specifies an empty next-hop destination, the queue manager
+	now uses the recipient domain instead of $myhostname. Specify
+	"default_filter_nexthop = $myhostname" for compatibility
+	with Postfix 2.6 and earlier, or specify a non-empty next-hop
+	filter destination.  Files: *qmgr/qmgr_message.c proto/access,
+	proto/header_checks, proto/postconf.proto, proto/FILTER_README.
+
+20100120
+
+	Cleanup: detect illegal pipelining after HELO, EHLO.  File:
+	smtpd/smtpd.c.
+
+20100128
+
+	Documentation: streamlined the decriptions of protocol and
+	cipher tweaks. Victor Duchovni. Files: proto/TLS_README,
+	proto/postconf.proto.
+
+20100131
+
+	Documentation: the address verification database is now
+	persistent by default. This, combined with the now default
+	stress-dependent configuration, improves the performance
+	limits and simplifies database maintenance.  Files:
+	proto/ADDRESS_VERIFICATION_README, verify/verify.c.
+
+	Cleanup: undo the proxymap and trivial-rewrite max_idle=1s
+	override that was introduced with Postfix 2.3. It did not
+	help to retire long-lived proxymap or trivial-rewrite
+	processes on busy servers, and worsened performance on
+	low-traffic servers. The reduced ipc_ttl value (introduced
+	with Postfix 2.4) already solves the problem of retiring
+	long-lived proxymap or trivial-rewrite processes.  Files:
+	proxymap/proxymap.c, trivial-rewrite/trivial-rewrite.c.
+
+20100202
+
+	Documentation: major revision of SASL_README with many
+	details on how to configure Cyrus SASL internals. Patrick
+	Koetter.  File: proto/SASL_README.html
+
+20100204
+
+	Feature: added "forward_secrecy" option for Cyrus SASL.
+	File: xsasl/xsasl_cyrus_security.c.
+
+20100206
+
+	Bugfix (from day zero): the local delivery agent returned
+	undeliverable mail to the envelope sender instead of the
+	owner- alias, when delivering to command or file. This
+	reuses the workaround that was implemented to report a
+	Delivered-To: loop. Files: local/file.c, local/command.c,
+	local/recipient.c, local/bounce_workaround.c.
+
+20100209
+
+	The tcp_table(5) interface is now part of the stable release.
+	The last protocol change was in Postfix 2.1. File:
+	util/dict_open.c.
+
+20100305
+
+	Feature: reject_rhsbl_reverse_client, to reject a remote
+	SMTP client based on its unverified reverse hostname.  Code
+	by Noel Jones. Files: smtpd/smtpd_check.c, proto/postconf.proto.
+
+	Feature: smtp_address_preference (default: ipv6) to control
+	the order in which the Postfix SMTP client will connect to
+	a destination that has IPv6 and IPv4 addresses with equal
+	MX preference. Files: global/mail_params.h, smtp/smtp.c,
+	smtp/smtp_params.c, smtp/smtp_addr.c, dns/dns_rr.c,
+	and documentation.
+
+20100321
+
+	Feature: allow Milter applications to use a lower protocol
+	version than the version that Postfix is configured for.
+	Based on an idea by Kouhei Sutou.  File: milter/milter8.c.
+
+20100322
+
+	Bugfix (introduced 20100305) the new smtp_address_preference
+	feature was not tested with LMTP support. Problem reported
+	by Stefan Foerster. File: smtp/smtp.c.
+
+20100407
+
+	Bugfix (introduced 20100305): reject_rhsbl_reverse_client
+	was skipped if the forward-confirmed reverse DNS (FCRDNS)
+	remote SMTP client hostname was "unknown".  Victor Duchovni.
+	File: smtpd/smtpd_check.c.
+
+20100422
+
+	Workaround (introduced: postfix-19990906 a.k.a. Postfix
+	0.8.0).  The Postfix local delivery agent did not properly
+	distinguish between "address has no extension" and "address
+	has an extension, but the extension is invalid". In both
+	cases it would run only the full recipient local-part through
+	the alias maps.  Instead, it now drops the faulty extension
+	from the recipient address local-part (it would be too
+	error-prone to replace all tests for "no extension" by tests
+	for "no valid extension".  File: local/recipient.c.
+
+20100430
+
+	Feature: customized hard/soft reject responses by Jason
+	Parsons.  File: smtpstone/smtp-sink.c.
+
+20100515
+
+	Bugfix (introduced Postfix 2.6): the Postfix SMTP client
+	XFORWARD implementation did not skip "unknown" SMTP client
+	attributes, causing a syntax error when sending a PORT
+	attribute. Reported by Victor Duchovni. File: smtp/smtp_proto.c.
+
+20100526
+
+	Cleanup: a unit-test driver was not updated after an internal
+	API change. Vesa-Matti J Kari File: milter/milter.c.
+
+20100529
+
+	Portability: OpenSSL 1.0.0 changes the priority of anonymous
+	cyphers. Victor Duchovni. Files: postconf.proto,
+	global/mail_params.h, tls/tls_certkey.c, tls/tls_client.c,
+	tls/tls_dh.c, tls/tls_server.c.
+
+	Portability: Mac OS 10.6.3 requires <arpa/nameser_compat.h>
+	instead of <nameser8_compat.h>. Files: makedefs, util/sys_defs.h,
+	dns/dns.h.
+
+20100531
+
+	Robustness: skip LDAP queries with non-UTF-8 search strings
+	(in anticipation of UTF8SMTP support).  File: global/dict_ldap.c.
+
+	Strict UTF-8 validator per RFC 3629. File: util/valid_utf8_string.c.
+
+20100601
+
+	Cleanup: Postfix LDAP client support for RFC 2255 LDAP URLs.
+	Victor Duchovni. Files: proto/ldap_table global/dict_ldap.c.
+
+	Safety: Postfix processes log a warning when a matchlist
+	has a #comment at the end of a line (for example mynetworks
+	or relay_domains).  File: util/match_list.c.
+
+	Portability: Berkeley DB 5.x has the same API as Berkeley
+	DB 4.1 and later. File: util/dict_db.c.
+
+20100610
+
+	Bugfix (introduced Postfix 2.2): Postfix no longer appends
+	the system default CA certificates to the lists specified
+	with *_tls_CAfile or with *_tls_CApath.  This prevents
+	third-party certificates from getting mail relay permission
+	with the permit_tls_all_clientcerts feature.  Unfortunately
+	this may cause compatibility problems with configurations
+	that rely on certificate verification for other purposes.
+	To get the old behavior, specify "tls_append_default_CA =
+	yes".  Files: tls/tls_certkey.c, tls/tls_misc.c,
+	global/mail_params.h.  proto/postconf.proto, mantools/postlink.
+
+20100615
+
+	Cleanup: the master no longer logs "process P killed with
+	signal S" when it shuts down a running service (for example,
+	the service is removed from master.cf, or the service is
+	disabled via the main.cf master_service_disable parameter).
+	File: master/master_spawn.c.
+
+20100617
+
+	Feature: read-only sqlite support based on code by Axel
+	Steiner and documentation by Jesus Garcia Crespo. Files:
+	conf/postfix-files, mantools/postlink, proto/DATABASE_README.html,
+	proto/Makefile.in, proto/INSTALL.html, proto/mysql_table,
+	proto/pgsql_table, proto/sqlite_table, proto/SQLITE_README.html,
+	global/Makefile.in, global/mail_dict.c, global/dict_sqlite.c,
+	global/dict_sqlite.h, postconf/postconf.c, postfix/postfix.c.
+
+20100618
+
+	Cleanup: SQLite read-only driver and documentation.  Files:
+	global/dict_sqlite.c, proto/mysql_table, proto/SQLITE_README.html.
+
+20100707
+
+	Completed the 20100610 bugfix. File: tls/tls_misc.c.
+
+20100714
+
+	Compatibility with Postfix < 2.3: fix 20061207 was incomplete
+	(undoing the change to bounce instead of defer after
+	pipe-to-command delivery fails with a signal). Fix by Thomas
+	Arnett. File: global/pipe_command.c.
+
+20100715
+
+	Convenience: "postconf name=value ..." is now equivalent to
+	"postconf -e name=value ...".  File: postconf/postconf.c.
+
+20100724
+
+	Feature: INFO header/body_checks action for non-warning
+	messages (for example, to log all Milter-inserted headers).
+	File: global/header_body_checks.c, proto/header_checks.
+
+	Cleanup: after-filter Postfix SMTP servers now log before-filter
+	queue IDs. For this, the XFORWARD protocol was extended
+	with an IDENT attribute for the before-filter queue ID.
+	This code was started in Postfix 2.1, but it was never
+	finished due to time constraints.  Files: smtpd/smtpd.[hc]
+	smtpd/smtpd_proxy.c, smtpd/smtpd_sasl_proto.c,
+	*qmgr/qmgr_messsage.c, *qmgr/qmgr_deliver.c,
+	global/deliver_request.[hc], global/mail_proto.h,
+	global/deliver_pass.c, smtp/smtp_proto.c.
+
+20100727
+
+	Bugfix: the milter_header_checks parser provided only the
+	actions that change the message flow (reject, filter,
+	discard, redirect) but disabled the non-flow actions (warn,
+	replace, prepend, ignore, dunno, ok).  File:
+	cleanup/cleanup_milter.c.
+
+20100827
+
+	Performance: fix for poor smtpd_proxy_filter TCP performance
+	over loopback (127.0.0.1) connections. Problem reported by
+	Mark Martinec.  Files: smtpd/smtpd_proxy.c.
+
+	Bugfix: the Postfix SMTP client no longer appends the local
+	domain when looking up a DNS name without ".".  Specify
+	"smtp_dns_resolver_options = res_defnames" to get the old
+	behavior, which can produce unexpected results. Files:
+	smtp/smtp.c, smtp/smtp_params.c, smtp/smtp_addr.c.
+
+20100828
+
+	Refactoring: postscreen source code broken up into multiple
+	files, and identifiers updated to match changes in their
+	purpose.  This will be the baseline for adding support for
+	DNSBL weighting, then a dummy engine to collect forensic
+	evidence with the option of future protocol checks.  Files:
+	postscreen/*.[hc], Makefile.in.
+
+20100829
+
+	Postscreen DNSBL support for optional fixed-string filters
+	and optional integral weight factors (use negative weights
+	for whitelisting). See RELEASE_NOTES and postconf(5) for
+	details.  Files: postscreen/postscreen_dnsbl.c,
+	proto/postconf.proto, mantools.postlink, global/mail_params.h.
+
+	Incompatibility: the postscreen-to-dnsblog protocol was
+	changed to support DNSBL query result filters. Use "postfix
+	reload" after installing the new version otherwise the
+	dnsblog(8) server may complain.
+
+20100830
+
+	Polished the postscreen documentation and comments to clarify
+	the user interface and implementation. No code changes.
+
+20100831-910
+
+	Restructured postscreen and added support for a dummy SMTP
+	protocol engine. This engine logs rejected attempts to
+	deliver mail with helo/sender/recipient information, and
+	implements deep protocol tests.  The first deep protocol
+	test is for command pipelining, where a client sends multiple
+	commands instead of waiting for the server to respond to
+	each command. The second one implements the Postfix SMTP
+	server's smtpd_forbidden_commands feature.  Files:
+	postscreen/*.[hc]. See RELEASE_NOTES, postconf(5) and
+	postscreen(8) for incompatibilities, features, and configuration
+	parameters.
+
+20100910
+
+	Feature: boolean configuration parameters with string-valued
+	defaults, so that they can be subject to macro expansions.
+	This was needed to make some postscreen parameter defaults
+	to the values of the corresponding smtpd parameters.  Files:
+	global/mail_conf.h, global/mail_conf_nbool.c,
+	master/event_server.c, master/mail_server.h, master/multi_server.c,
+	master/single_server.c, master/trigger_server.c,
+	postconf/extract.awk, postconf/postconf.c.
+
+20100911
+
+	Feature: texthash read-only database. This is similar to
+	hash: files, except that you don't need to run the postmap(1)
+	command before you can use the file, and that it does not
+	detect changes after the file is read.  All information is
+	read into memory. Files: util/dict_open.c, util/dict_thash.[hc],
+	proto/DATABASE_README.html, postconf/postconf.c
+
+20100912
+
+	Feature: bare newline detection in postscreen. Real spambots
+	don't make this mistake anymore, but poorly-written software
+	still does.  File: postscreen/smtpd.c.
+
+	Documentation: POSTSCREEN_README including instructions for
+	turning postscreen(8) on without blocking mail, and more.
+	Trimmed the text in the postscreen(8) manpage.  File:
+	proto/POSTSCREEN_README.html, postscreen/postscreen.c.
+
+20100914
+
+	Cleanup: the "postscreen_greet_wait" delay now ends as soon
+	as both the pregreet and DNSBL tests complete (the postscreen
+	documentation mentions in history/credits that the program
+	started as a crude prototype).  The default postscreen_dnsbl_ttl
+	caching time is now reduced to 1h from 24h, allowing
+	postscreen to catch up on DNSBL updates more quickly. If
+	this increases the database update frequency too much then
+	we'll need to make dnsbl result non-cachable.  Files:
+	postscreen/postscreen_dnsbl.c, global/mail_params.h.
+
+20100915
+
+	Bugfix (introduced 20100914): missing precondition for
+	call-back notification.  File: postscreen/postscreen_dnsbl.c.
+
+	Bugfix (introduced 20100914): the "postscreen_greet_wait"
+	delay speedup worked only for DNSBL listed sites.  File:
+	postscreen/postscreen_dnsbl.c.
+
+	Workaround: better handling of pregreeting spambots. The
+	postscreen built-in SMTP engine no longer sends a 220 banner
+	to a client that falls into the pregreet trap.  This eliminates
+	many "NON-SMTP COMMAND" records in postscreen logging, as
+	the SMTP client and server no longer get out of sync.  It
+	also results in better logging of sender/recipient information.
+	File: postscreen/postscreen_smtpd.c.
+
+20100916
+
+	Cleanup: postscreen now uses the first responding DNSBL
+	name in the "5.7.1 Service unavailable" reply, instead of
+	the last responding one. File: postscreen/postscreen_dnsbl.c.
+
+	Cleanup: the 20100914 "postscreen_greet_wait" speedup did
+	not happen as often as it should, because some older code
+	still turned on PREGREET tests gratuitously, causing a full
+	greet-wait delay.  File: postscreen/postscreen_tests.c.
+
+	Cleanup: to avoid "address in use" problems, postscreen now
+	closes the listening socket after "postfix stop".  It also
+	closes the socket after "postfix reload" but that does not
+	hurt. Files: master/event_server.c, master/multi_server.c.
+
+	Cleanup: postscreen now logs CONNECT and DISCONNECT events.
+	Files: postscreen/postscreen.c, postscreen/postscreen_misc.c.
+
+20100917
+
+	Bugfix: cut-and-paste error. Postscreen used pregreet_ttl
+	instead of dnsbnl_ttl. File: postscreen/postscreen_early.c.
+
+20100920
+
+	Cleanup: minor cleanups and invisible fixes. Files:
+	postscreen/postscreen_misc.c, postscreen/postscreen.h,
+	postscreen/postscreen_tests.c.
+
+	Feature: preliminary postscreen penalty mechanism. Basic
+	idea: when a client exceeds some threshold, don't allow it
+	to pass any tests until the penalty expires. Penalties
+	provide a way to slow down clients without blocking mail
+	permanently.  Files: postscreen/postscreen_misc.c,
+	postscreen/postscreen_tests.c, postscreen/postscreen.c.
+
+	A first application of the postscreen penalty mechanism
+	triggers on clients that make brief connections to find out
+	if the mail server is up.  With "postscreen_early_hangup_penalty
+	= 600" they will disqualify themselves for 10 minutes.
+	Unfortunately, this behavior is used by legitimate bulk
+	mail services. This application was removed 20101103.  The
+	penalty mechanism itself is left in place as #ifdef NONPROD.
+
+20100923
+
+	Cleanup: renamed MUMBLE_FLAG_MUMBLE aggregates to
+	MUMBLE_MASK_MUMBLE for consistency with other Postfix code.
+	Files: postscreen/*.[hc].
+
+20100930
+
+	Cleanup: flag PIPELINING errors with NOOP and VRFY.  File:
+	smtpd/smtpd.c.
+
+20101006
+
+	Bugfix (introduced: 20100914) dangling pointer when a client
+	makes N > 1 simultaneous connections and closes M < N
+	connections before postscreen has delivered the DNSBL score
+	to the corresponding pseudothreads. In practice the pointer
+	will refer to a block of 0xff bytes; the program terminates
+	with a segmentation violation, and is restarted immediately
+	by the master daemon. Files: postscreen/postscreen_early.c,
+	postscreen/postscreen_dnsbl.c.
+
+	Cleanup: avoid repeated delivery to mailing list members
+	with pathological nested alias configurations.  The local(8)
+	delivery agent now keeps the owner-alias attribute of the
+	parent alias, when delivering mail to a child alias that
+	does not have its own owner alias. With this change, local
+	addresses from that child alias will be written to a new
+	queue file, and a temporary error with one local address
+	will no longer result in repeated delivery to other mailing
+	list members.  Specify "reset_owner_alias = yes" for the
+	older behavior.  File: local/alias.c.
+
+20101007
+
+	Bugfix (introduced: 2100923): duplicate "PASS OLD" logging.
+	File: postscreen/postscreen_misc.c.
+
+20101008
+
+	Cleanup: dnsblog now logs "addr X listed by domain Y as Z"
+	instead of "addr X blocked by domain Y as Z", because the
+	service may be used for whitelist lookups. File:
+	dnsblog/dnsblog.c.
+
+20101023
+
+	Cleanup: don't apply reject_rhsbl_helo to non-domain forms
+	such as network addresses.  This would cause false positives
+	with dbl.spamhaus.org.  File: smtpd/smtpd_check.c.
+
+20101103
+
+	Cleanup: new qmgr_ipc_timeout parameter (default: 60s) to
+	override the system-wide ipc_timeout setting (default:
+	3600s). The shorter timeout allows the queue manager to
+	reset a deadlocked IPC connection before the watchdog timer
+	goes off. Files: *qmgr/qmgr.c.
+
+	Cleanup: new qmgr_daemon_timeout parameter (default: 1000s)
+	to make the hard-coded 1000s watchdog timeout configurable.
+	Files: *qmgr/qmgr.c.
+
+	Cleanup: request default DSN notification when adding a
+	recipient with smfi_addrcpt, instead of requesting "never
+	notify" as with Postfix automatically-added BCC recipients.
+	Files: cleanup/cleanup_addr.c, cleanup/cleanup.h,
+	cleanup/cleanup_milter.c.
+
+20101105
+
+	Feature: DNS whitelist support in the Postfix SMTP server.
+	permit_dnswl_client whitelists a client by IP address, and
+	permit_rhswl_client whitelists a client by its hostname.
+	The syntax is the same as reject_rbl_client etc., but the
+	result is PERMIT instead of REJECT.  For safety reasons,
+	permit_xxx_client are silently ignored when they would
+	override reject_unauth_destination.  The result is
+	DEFER_IF_REJECT when DNSWL lookup fails.  The implementation
+	is based on a design documented by Noel Jones (August 2010).
+	File: smtpd/smtpd_check.c.
+
+20101108
+
+	Workaround: strip off IPv6 datalink suffix from peer address
+	to avoid problems with strict address checking code. Files:
+	smtpd/smtpd_peer.c, qmqpd/qmqpd_peer.c.
+
+20101114
+
+	Robustness: postscreen(8) now implements a time limit on
+	reading an entire command, instead of a time limit for
+	reading individual characters. File: postscreen/postscreen_smtpd.c.
+
+20101023
+
+	Cleanup: don't apply reject_rhsbl_helo to non-domain forms
+	such as network addresses.  This would cause false positives
+	with dbl.spamhaus.org.  File: smtpd/smtpd_check.c.
+
+20101117
+
+	Bugfix: the "421" reply after Milter error was overruled
+	by Postfix 1.1 code that replied with "503" for RFC 2821
+	compliance. We now make an exception for "final" replies,
+	as permitted by RFC. Solution by Victor Duchovni. File:
+	smtpd/smtpd.c.
+
+20101124-6
+
+	Feature: pattern matching for DNSWL/DNSBL responses.  For
+	example, with "reject_rbl_client example.com=d.d.d.d", each
+	"d" can now be a pattern inside "[]" that contains one or
+	more comma-separated decimal numbers or number..number
+	ranges.  Files: smtpd/smtpd_check.c, postscreen/postscreen_dnsbl.c,
+	util/ip_match.c, util/ip_match.h.
+
+20101126
+
+	Cleanup: don't log "blocked using example.com=127.0.0.1",
+	just log the domain name. File: smtpd/smtpd_check.c.
+
+20101129
+
+	Cleanup: postscreen_client_connection_count_limit (default:
+	$smtpd_client_connection_count_limit) to limit the number
+	of connections from the same IP address to the postscreen(8)
+	daemon. Files: postscreen/postscreen.c, postscreen/postscreen.h,
+	postscreen/postscreen_state.c.
+
+20101130
+
+	Cleanup: all postscreen(8) logging now reports the client
+	as [address]:port.  This requires an update of tools that
+	process postscreen logging.  Files: postscreen/*.c,
+	proto/POSTSCREEN_README.html.
+
+	Cleanup: polishing recent documentation and code. Files:
+	postscreen/postscreen_dnsbl.c, util/ip_match.c.
+
+20101201
+
+	Bugfix (introduced 20101129): broken default value for
+	postscreen_client_connection_count_limit if the
+	smtpd_client_connection_count_limit parameter was left at
+	its default.  File: postscreen/postscreen.c.
+
+	Workaround: BSD-ish mkdir() ignores the effective GID
+	and copies group ownership from the parent directory.
+	File: util/make_dirs.c.
+
+20101202
+
+	Feature: the LDAP client can now authenticate to LDAP servers
+	via SASL. This is tested with SASL GSSAPI and Kerberos 5.
+	Original code by Quanah Gibson-Mount adapted by Victor
+	Duchovni.  Files: global/dict_ldap.c, proto/LDAP_README.html,
+	proto/ldap_table.
+
+	Cleanup: the cleanup server now reports a temporary delivery
+	error when it reaches the virtual_alias_expansion_limit or
+	virtual_alias_recursion_limit. Previously, it would silently
+	ignore the excess recipients and deliver the message.  File:
+	cleanup/cleanup_map1n.c.
+
+20101205
+
+	Cleanup: sache_clnt_create() had an unnecessary data
+	dependency on the non-library var_scache_service variable,
+	causing problems with shared library builds.  Instead, it
+	should use its service argument (which has the same value).
+	File: global/scache.c.
+
+	Cleanup: pipe_command.c had an unnecessary data dependency
+	on the non-library var_command_maxtime variable, causing
+	problems with shared library builds. The dependency was not
+	necessary because the callers already specify an explicit
+	time limit.  File: global/pipe_command.c.
+
+20101206
+
+	Bugfix (introduced 20101205): postscreen hung up due to
+	incorrect output error test. File: postscreen/postscreen_send.c.
+
+20101207
+
+	Cleanup: the undisclosed_recipients_header default value
+	is now the empty string. The Internet mail RFCs have supported
+	messages without recipient header for almost 10 years now.
+	File: global/mail_params.h.
+
+	Cleanup: use strtol() instead of sscanf() for consistent
+	handling of out-of-range numbers. Files: global/cfg_parser.c,
+	global/conv_time.c, global/mail_conf_int.c,
+	global/mail_conf_long.c, global/mail_conf_nint.c.
+
+20101217
+
+	Cleanup: eliminated the code that copied TLS protocol
+	messages between the OpenSSL TLS engine and the network.
+	This change hopefully simplifies the TLS library enough
+	that it can be used in an event-driven TLS proxy in front
+	of postscreen.  Files: tls/tls_bio.c, tls/tls_server.c,
+	tls/tls_client.c.
+
+	This change eliminates an obscure bug where the SMTP server
+	would wait for another $smtpd_timeout seconds after sending
+	the "421 Error: timeout exceeded" message to the client.
+
+20101221
+
+	Cleanup: simplified the VSTREAM "large buffer" support by
+	dropping the Postfix 2.4 "binary compatibility" requirement.
+	Files: util/vstream.c, util/vstream.h.
+
+20101222
+
+	Cleanup: the SMTP client PIPELINING code did not account
+	for TLS protocol overhead. This could (only in theory)
+	result in deadlock when the remote SMTP server announces a
+	very small receive window after the client and server have
+	synchronized their SMTP state. Victor Duchovni.  File:
+	smtp/smtp_proto.c.
+
+20101223
+
+	Feature: with "tls_preempt_cipherlist = yes" the Postfix
+	SMTP server will preempt the remote SMTP client's cipher
+	preference order. This requires OpenSSL 0.9.7 and later.
+	Victor Duchovni. Files: src/smtpd/smtpd.c, src/tls/tls_server.c,
+	proto/TLS_README.html, proto/postconf.proto.
+
+	Future proofing: specify "tls_disable_workarounds = a list
+	or bit-mask of OpenSSL bug work-arounds to disable". This
+	may become necessary when a bug workaround is found to cause
+	problems (security or interoperability). Victor Duchovni.
+	Files: tls/tls_misc.c, proto/TLS_README.html, proto/postconf.proto.
+
+	Infrastructure: extended name_mask module feature set with
+	extensive documentation and 32-bit regression tests.  Victor
+	and Wietse.  File: util/name_mask.[hc].
+
+20101224
+
+	Cleanup: sanitized the name_mask API so that errors will be
+	ignored only upon explicit request. Files: util/name_mask.[hc],
+	src/global/ehlo_mask.c, src/smtp/smtp_proto.c,
+	src/util/name_mask.c, src/xsasl/xsasl_dovecot_server.c.
+
+	Cleanup: more TLS overhead horrors for the SMTP client's
+	PIPELINING engine. Wietse and Victor. File: smtp/smtp_proto.c.
+
+20101226
+
+	Cleanup: the SMTP client logic for pipelining the "." and
+	"QUIT" commands was bogus - the pipelining engine could not
+	know how much unacknowledged data is pending in the local
+	TCP stack.  We now ignore the buffer check for sending
+	"QUIT" after ".".  Wietse and Victor. File: smtp/smtp_proto.c.
+
+20110101
+
+	Cleanup: the Postfix SMTP server now always refreshes the
+	SASL authentication mechanism list after STARTTLS. Some
+	Dovecot versions may change their responses when they know
+	that the SMTP connection is encrypted. File: smtpd/smtpd.c.
+
+	Cleanup: the smtpd_starttls_timeout default value is now
+	stress-dependent.  Files: global/mail_params.h,
+	proto/postconf.proto.
+
+	Compatibility: postscreen_discard_ehlo_keyword(s|maps)
+	support for compatibility with smtpd_discard_ehlo_keyword(s|maps).
+	Files: postscreen/postscreen_smtpd.c.
+
+20110102
+
+	Feature: STARTTLS support for the postscreen(8) daemon.
+	With early testing feedback from Victor Duchovni and Ralf
+	Hildebrandt.  Files: postscreen/postscreen_smtpd,
+	postscreen/postscreen_starttls.c.
+
+	Feature: event-driven tlsproxy(8) daemon that translates
+	TLS <=> plaintext for postscreen(8). One tlsproxy(8) process
+	can translate traffic for multiple remote SMTP clients.
+	With early testing feedback from Victor Duchovni and Christian
+	Roessner.  Files: util/nbbio.[hc], tlsproxy/*.[hc],
+	postscreen/postscreen_starttlsd.c, postscreen/postscreen_smtpd.c.
+
+20110103
+
+	Cleanup: missing tls_level support in tlsproxy (it has no
+	way to send plaintext, but perhaps an informative error
+	message is in order anyway).  File: tlsproxy/tlsproxy.c.
+
+	Cleanup: simplified the handling of throttled output (i.e.
+	output that can't be sent because the receiver tries to be
+	nasty).  File: postscreen/postscreen_send.c.
+
+20110104
+
+	Feature: add contact information to each SMTP server reject
+	message. For example, "smtpd_reject_footer = call 800-555-0101
+	for assistance", with macro expansion and with multi-line
+	support. Files: global/mail_params.h, mantools/postlink,
+	proto/postconf.proto, smtpd/smtpd.c, smtpd/smtpd_chat.c,
+	smtpd/smtpd_expand.[hc], util/mac_expand.[hc].
+
+20110105
+
+	Cleanup: the forest of TLS-related booleans was shrunk.
+	Victor Duchovni. Files: smtpd/smtpd.c, postscreen/postscreen.c,
+	postscreen/postscreen_smtpd.c, tlsproxy/tlsproxy.c.
+
+	Non-production: tlsproxy support in the Postfix SMTP server
+	for stress testing of the tlsproxy daemon (#ifdef TLSPROXY).
+	Seen from outside, Postfix works just as if it has TLS
+	support built into in smtpd(8). Files: smtpd/smtpd.c,
+	tls/tls_proxy*.[hc], tlsproxy/tlsproxy.c, util/vstream.[hc].
+
+	Bugfix (introduced with the Postfix TLS patch): discard
+	plaintext following the STARTTLS command or response. This
+	matters only for the minority of SMTP clients that actually
+	verify server certificates.  Files: smtpd/smtpd.c,
+	smtp/smtp_proto.c.
+
+20110106
+
+	Non-production: cleaned up the tlsproxy support in the
+	Postfix SMTP server for stress testing of the tlsproxy
+	daemon (still #ifdef TLSPROXY). File: smtpd/smtpd.c.
+
+20110107
+
+	Cleanup: smtpd_reject_contact_information is renamed to
+	smtpd_reject_footer, because it can be used for non-contact
+	information.
+
+	Compatibility: postscreen_reject_footer support for
+	compatibility with smtpd_reject_footer.  Files:
+	global/smtp_reply_footer.[hc], global/mail_conf.[hc],
+	postscreen/postscreen_expand.c, postscreen/postscreen_send.c,
+	postscreen/postscreen.c, smtpd/smtpd_chat.c.
+
+	Compatibility: postscreen_command_filter support for
+	compatibility with smtpd_command_filter. Files:
+	postscreen/postscreen_dict.c, postscreen/postscreen_smtpd.c
+
+20110108
+
+	Cleanup: postscreen(8) now displays control characters in
+	PREGREET responses as C-style \letter escapes, instead of
+	"?".  File: postscreen/postscreen_early.c.
+
+20110109
+
+	Cleanup: Solaris support for "pass" (file descriptor passing
+	based) services in master.cf.  This was needed by postscreen(8).
+	Also, renamed upass_xxx.c to unix_pass_xxx.c. One-character
+	prefixes are too short. Removed upass_connect.c because it
+	was useless code. Files: util/stream_pass_connect.c,
+	util/unix_pass_listen.c, util/unix_pass_trigger.c.
+
+	Bugfix (introduced Postfix 2.4): on Solaris the Postfix
+	event engine was deaf for SIGHUP and SIGALRM signals after
+	the switch to /dev/poll. Symptoms were delayed "postfix
+	reload" response, and killed processes when the watchdog
+	timeout was less than max_idle.  The fix is to set up SIGHUP
+	and SIGALRM handlers that write to a pipe, and to monitor
+	that pipe for read events via the Postfix event engine.
+	Files: master/master_sig.c, util/watchdog.c, util/sys_defs.h.
+
+20110111
+
+	Cleanup: replaced the postscreen(8) separate blacklist and
+	whitelist lookup tables by one postscreen_access_list table.
+	See postconf(5) and POSTSCREEN_README for examples.  Files:
+	postscreen/postscreen_access.c, postscreen/postscreen.c,
+	proto/postconf.proto, proto/POSTSCREEN_README.html.
+
+20110112
+
+	Cleanup: suspend/resume logic for postscreen(8) SMTP sessions
+	that temporarily switch control to an external program such
+	as tlsproxy, or perhaps a future policy plugin.  Files:
+	postscreen/postscreen_smtpd, postscreen/postscreen_starttls.c.
+
+20110113
+
+	Cleanup: ps_cache and psc_cache are now postscreen_cache.
+	There is no need for obscure name abbrevations. File:
+	src/global/mail_params.h.
+
+20110115
+
+	Workaround: malloc fuzz (safety margin for malloc requests).
+	Files: util/sys_defs.h, util/mymalloc.c.
+
+	Cleanup: dnsblog_service_name and tlsproxy_service_name are
+	now configurable, in case someone needs this. Files:
+	global/mail_params.h, postscreen/postscreen.c, mantools/postlink,
+	proto/postconf.proto.
+
+20110116
+
+	Cleanup: soft_bounce support for postscreen(8). Files:
+	postscreen/postscreen_smtpd.c, postscreen/postscreen_send.c.
+
+	Cleanup: for smtpd(8) compatibility, postscreen(8) now
+	strips deprecated route address prefixes from email addresses
+	(@here,@there:user@example becomes user@example). This is
+	primarily to make postscreen(8) logging more similar to
+	that of smtpd(8). File: postscreen/postscreen_smtpd.c.
+
+	Cleanup: documentation, in preparation for the Postfix 2.8
+	stable release.
+
+20110117
+
+	Bugfix (introduced Postfix alpha, or thereabouts): on HP-UX
+	the Postfix event engine was deaf for SIGALRM signals.
+	Symptoms were killed processes when the watchdog timeout
+	was less than max_idle.  The fix is the same as Solaris fix
+	20110109. Since we can't know what other systems need this,
+	the workaround is enabled by default.  Files: util/sys_defs.h.
+
+	Cleanup: "smtpd_tls_eecdh_grade = strong" by default, instead
+	of snapshot-only. File: global/mail_params.h, proto/postconf.proto.
+
+	Cleanup: missing "#include <errno.h>" in util/watchdog.c.
+
+	Bugfix: when compiled without -DUSE_TLS, tlsproxy used the
+	wrong server skeleton (multi_server instead of event_server).
+	File: tlsproxy/tlsproxy.c.
+
+	Workaround: added a panic check for code that is mis-compiled
+	by the HP-UX compiler.  File: postscreen/postscreen.c,
+	postscreen/postscreen.h, postscreen/postscreen_state.c.
+
+20110118
+
+	Bugfix: the tls_disable_workarounds word list only included
+	workarounds in SSL_OP_ALL. Problem report by Steve Jenkins,
+	problem fix by Victor Duchovni. File: tls/tls_misc.c.
+	
+	Last-minute incompatible syntax change: Postfix now uses
+	";" instead of "," to separate DNSBL/DNSWL address filter
+	fields inside "[]". The compatibility break is not an issue,
+	because the syntax never worked in main.cf. Problem reported
+	by Mark Martinec. Files: util/ip_match.c, util/ip_match.in,
+	util/ip_match.ref, proto/postconf.proto.
+
+	Cleanup: postscreen now monitors the AVERAGE latency of
+	table access, and complains at most once per minute.  File:
+	postscreen/postscreen_dict.c.
+
+	Bugfix: support for the "dunno" command somehow disappeared
+	from the postscreen_access_list implementation.  File:
+	postscreen/postscreen_access.c.
+
+20110123
+
+	Feature: read/write deadlines. Deadlines were introduced
+	with postscreen's dummy SMTP engine. In the Postfix SMTP
+	client and server, deadlines limit the total amount of time
+	to read or write one command line, one response line, or
+	one line of message content. This reduces the impact of
+	application exhaustion attacks that trickle data one byte
+	at a time.  Files: util/vstream.[hc], global/smtp_stream.c.
+
+	Cleanup: remove #ifdef MIGRATION_WARNING transitional code
+	from postscreen. File: postscreen/postscreen.c.
+
+20110125
+
+	Cleaned up and finalized read/write deadline support. Once
+	this code has been fielded it can go into Postfix 2.8.1,
+	and made available as optional patch for earlier releases.
+	Further refinements have only dimishing returns and can
+	evolve in the 2.9 release cycle.  File: util/vstream.c.
+
+20110128
+
+	Infrastructure: separate VSTREAM flags for read or write
+	errors. Files: util/vbuf.[hc], util/vstream.[hc].
+
+	Cleanup: after write error, the smtp_stream routines now
+	disable further network writes. This eliminates the need
+	for clumsy code to avoid unwanted I/O while shutting down
+	a TLS engine or closing a VSTREAM.  File: util/smtp_stream.c.
+
+20110201
+
+	Cleanup: when verifying that the client_address->client_name
+	lookup result resolves to the client_address, request
+	hostname->address lookup with the same protocol family (IPv4
+	or IPv6) as the client_address.  Files: util/myaddrinfo.[hc],
+	smtpd/smtpd_peer.c, qmqpd/qmqpd_peer.c.
+
+20110205
+
+	Infrastructure: vstream_peek_data() primitive to look ahead
+	at buffered input. Use vstream_peek() to find out how much,
+	and escape() for human presentation.  Files: util/vstream.[hc].
+
+	Cleanup: smtpd(8) and postscreen(8) now log the input that
+	triggers an SMTP command pipelining violation. File:
+	postscreen/postscreen_smtpd.c, smtpd/smtpd.c.
+
+	Infrastructure: smtp_get() option to skip over input in
+	excess of the line length limit. Files: smtp/smtp_stream.[hc].
+
+	Cleanup: handle excessively-long client requests and server
+	responses more gracefully, i.e. without losing synchronization.
+	Files: smtpd/smtpd_chat.c, smtpd/smtpd_proxy.c, smtp/smtp_chat.c,
+	smtpstone/smtp-source.c.
+
+20110207
+
+	Bugfix (introduced Postfix 2.8): segfault with smtpd_tls_loglevel
+	>= 3. Files: tls/tls_server.c, tls.h, smtpd.c, tlsproxy.c.
+
+	Cleanup: read/write deadline support for single_server TLS
+	applications (i.e. smtpd(8), smtp(8)).  File: tls/tls_bio_ops.c.
+
+20110212
+
+	Infrastructure: run-time switch for read/write deadline
+	support. Files: util/vstream.[hc], global/smtp_stream.[hc],
+	tls/tls_bio_ops.c.
+
+	Cleanup: configurable read/write deadline support with
+	smtpd_per_record_deadline (normal: "no", overload: "yes")
+	and smtp_per_record_deadline (default: "no").  Files:
+	global/mail_params.h, smtpd/smtpd.c, smtp/smtp.c,
+	smtp/smtp_proto.c, proto/postconf.proto, mantools/postlink.
+
+20110213
+
+	Workaround: the TLS library passes the same information via
+	different function arguments, and this same information is
+	maintained by different functions, so things get out of
+	step when code is updated. As of 20110212, tls_client_start()
+	needs to set the VSTREAM property of the TLS session object.
+	File: tls/tls_client.c.
+
+20110215
+
+	Human factors: the FCRDNS (forward-confirmed reverse DNS)
+	checking code now logs "hostname X does not resolve to
+	address Y", when a "reverse hostname" lookup result does
+	not resolve to the client IP address.  Files: smtpd/smtpd_peer.c,
+	qmqpr/qmqpd_peer.c.
+
+20110216
+
+	Cleanup: don't log a "connection reset by peer" error when
+	postscreen(8) tries to send a server response.  File:
+	postscreen/postscreen_send.c.
+
+20110218
+
+	Cleanup: Postfix now uses long integers for message_size_limit,
+	mailbox_size_limit and virtual_mailbox_limit. On LP64 (64-bit
+	long and pointer, but 32-bit integer) systems, these message
+	and mailbox limits can now exceed 2GB. Files: global/mail_params.c
+	global/mail_params.h local/local.c master/event_server.c
+	master/mail_server.h master/multi_server.c master/single_server.c
+	master/trigger_server.c virtual/virtual.c postconf/extract.awk
+	postconf/postconf.c.
+
+20110220
+
+	Cleanup: compiler gripe.  File: util/vstream.c.
+
+20110223
+
+	Cleanup: Debian build tool gripe. File: smtpstone/smtp-sink.c.
+
+20110224
+
+	postscreen(8) support to enforce proper client MX lookup
+	policy. Some spambots connect first to a backup MX address
+	in the hope that the server has a weaker anti-spam policy.
+	By listening on both primary and backup MX addresses,
+	postscreen(8) can deny the temporary whitelist status to
+	clients that connect only to backup MX hosts, and prevent
+	them from talking to a Postfix SMTP server process.
+
+	For example, when 1.2.3.4 is a local backup IP address,
+	specify "postscreen_whitelist_interfaces = !1.2.3.4 static:all"
+	to disable dynamic whitelisting for clients that connect
+	(only) to the backup MX address. Files: mantools/postlink,
+	proto/postconf.proto, proto/POSTSCREEN_README.html,
+	global/mail_params.h, postscreen/postscreen.c,
+	postscreen/postscreen.h, postscreen/postscreen_state.c.
+
+20110225
+
+	Workaround (problem introduced with IPv6 support in Postfix
+	2.2): the SMTP client did not support mail to [ipv6:ipv6addr].
+	Fix based on a patch by Gurusamy Sarathy (Sophos).  File:
+	util/host_port.c and regression test files.
+
+20110227
+
+	Portability: FreeBSD closefrom() support time window.  Sahil
+	Tandon. File: util/sys_defs.h.
+
+	Cleanup: each lookup table now has an owner status and UID
+	attributes for provenance purposes, even memory-resident
+	tables such as pcre, regexp and cidr.  This fixes a problem
+	where local(8) ignored the non-root ownership of a regular
+	expression-based aliases(5) file.  The table owner status
+	is TRUSTED (data straight from root-owned configuration
+	file), UNKNOWN (unauthenticated data from proxy or tcp) or
+	KNOWN (we actually have an owner UID). With most tables,
+	the owner UID is the file owner UID. With LDAP and *SQL,
+	the owner UID is the Postfix configuration file owner.
+	Files: src/util/dict_unix.c src/util/dict_thash.c
+	src/util/dict_static.c src/util/dict_sdbm.c src/util/dict_regexp.c
+	src/util/dict_pcre.c src/util/dict_nisplus.c src/util/dict_nis.c
+	src/util/dict_ni.c src/util/dict_ht.c src/util/dict_env.c
+	src/util/dict_dbm.c src/util/dict_db.c src/util/dict_cidr.c
+	src/util/dict_cdb.c src/util/dict_alloc.c src/util/dict.h
+	src/util/dict.c src/local/alias.c src/global/dict_sqlite.c
+	src/global/dict_pgsql.c src/global/dict_mysql.c
+	src/global/dict_ldap.c src/global/cfg_parser.h
+	src/global/cfg_parser.c.
+
+20110311
+
+	Feature: Base 32 encoder/decoder per RFC 4648. This code
+	was going to be used for long queue IDs, but plans were
+	changed. Files: src/util/base32_code.[hc].
+
+20110313
+
+	Bugfix (introduced Postfix 2.8): postscreen DNSBL scoring
+	error. When a client disconnected and then reconnected
+	before all DNSBL results for the earlier session arrived,
+	DNSBL results for the earlier session would be added to the
+	score for the later session. Problem report by Larry Vaden.
+	Files: dnsblog/dnsblog.c, postscreen/postscreen_dnsbl.c.
+
+	Cleanup: protocol description in dnsblog(8) manpage. File:
+	dnsblog/dnsblog.c.
+
+20110314
+
+	Portability: the SUN compiler had trouble with a pointer
+	expression of the form ``("text1" "text2") + constant'' so
+	we don't try to be so clever. Fix by Victor Duchovni.  File:
+	global/mail_params.h.
+
+20110320
+
+	Feature: specify "enable_long_queue_ids = yes" to enable
+	support for non-repeating queue IDs (also used as queue
+	file names). These queue IDs encode the time and inode
+	number with a safe alphabet of the 52 characters 0-9B-Zb-z.
+	The alphabet excludes vowels (AEIOUaeiou) to avoid creating
+	real words.  The queue ID format is: time in seconds, time
+	in microseconds, 'z', inode number (the inode number is
+	encoded without using the 'z' character of the safe alphabet).
+	Turning on long queue IDs changes the width of the first
+	output column of the mailq (postqueue -p) command, and
+	changes the appearance of Postfix Message-ID headers to
+	queueID@myhostname.  Files: global/file_id.[hc],
+	global/safe_ultostr.[hc], global/mail_queue.[hc],
+	postsuper/postsuper.c, showq/showq.c
+
+20110321
+
+	Performance: with long queue file names, queue hashing now
+	produces the same result as with short names. Postfix uses
+	the hexadecimal representation of the file creation time
+	in microseconds, instead of the beginning of the file name
+	which changes once every year or so, a problem that was
+	reported by Victor Duchovni. The base 16 encoding gives
+	finer control over the number of directories than possible
+	with base 52 encoding.  Files: global/mail_queue.[hc]. This
+	change requires "postfix reload".
+
+20110322
+
+	Cleanup: preserve the microseconds value when renaming
+	long->short or short->short queue file names.  As a side
+	benefit, renaming long->short queue IDs will not change the
+	result from queue hashing.  File: postsuper/postsuper.c.
+
+20110323
+
+	Bitrot: qshape regexp pattern for long queue file names.
+	Ralf Hildebrandt. File: auxiliary/qshape/qshape.pl.
+
+	Bitrot: text about queue ID reuse in the postsuper manpage.
+	File: postsuper/postsuper.c.
+
+20110328
+
+	Cleanup: don't log warnings about socket shutdown() errors
+	after a connection breaks. Postfix calls shutdown() to avoid
+	unnecessary socket write timeouts. This is only an optimization,
+	and failure is not critical.  File: global/smtp_stream.c.
+
+20110411
+
+	Cleanup: postscreen(8) and verify(8) daemons now lock their
+	respective cache file exclusively upon open, to avoid massive
+	cache corruption by unsupported sharing. Files: util/dict.h,
+	util/dict_open.c, verify/verify.c, postscreen/postscreen.c.
+
+20110414
+
+	Bugfix (introduced with Postfix SASL patch 20000314): don't
+	reuse a server Cyrus SASL handle after authentication
+	failure. File: smtpd/smtpd_proto.c.
+
+20110418
+
+	Bugfix (introduced Postfix 2.3 and Postfix 2.7): the Milter
+	client reported some "file too large" errors as temporary
+	errors. Problem reported by Michael Tokarev. Files:
+	milter/milter8.c, cleanup/cleanup_milter.c.
+
+20110420
+
+	Performance: a high load of DSN success notification requests
+	could stall the queue manager. Solution: make the trace
+	client asynchronous, just like the bounce and defer clients.
+	Problem reported by Eduardo M. Stelmaszczyk of terra.com.br.
+	Files: global/abounce.[hc], *qmgr/qmgr_active.c (the
+	qmgr_active.c files are identical).
+
+20110421
+
+	Cleanup: updated abounce warning message, and added a safety
+	timeout to abounce() etc. requests. File: global/abounce.c.
+
+20110426
+
+	Bugfix (introduced in Postfix 1.1, duplicated in Postfix
+	2.3, unrelated mistake in Postfix 2.7): the local(8) delivery
+	agent ignored table lookup errors in mailbox_command_maps,
+	mailbox_transport_maps, fallback_transport_maps and (while
+	bouncing mail to alias) alias owner lookup. Problem reported
+	by William Ono. Files: local/command.c, local/mailbox.c,
+	local/unknown.c, local/bounce_workaround.c.
+
+20110516
+
+	Update the warning when permit_naked_ip_address is used,
+	and add permit_sasl_authenticated to the list of suggested
+	alternatives.  File: smtpd/smtpd_check.c.
+
+20110601
+
+	Bugfix (introduced Postfix 2.6 with master_service_disable)
+	loop control error when parsing a malformed master.cf file.
+	Found by Coverity. File: master/master_ent.c.
+
+20110602
+
+	Bugfix (introduced: Postfix 2.7): "sendmail -t" reported
+	"protocol error" after queue file write error.  File:
+	postdrop/postdrop.c.
+
+20110605
+
+	Cleanup: removed the PSC_STATE_FLAG_CACHE_EXPIRED flag.
+	Nothing uses this anymore. Files: postscreen/postscreen.h,
+	postscreen/postscreen_state.c, postscreen/postscreen_tests.c.
+
+20110614
+
+	Linux kernel version 3 support. Linus Torvalds has reset
+	the counters for reasons not related to changes in code.
+	Files: makedefs, util/sys_defs.h.
+
+20110615
+
+	Workaround: some Spamhaus RHSBL rejects lookups with "No
+	IP queries" even if the name has an alphanumerical prefix.
+	We play safe, and skip both RHSBL and RHSWL queries for
+	names ending in a numerical suffix.  File: smtpd/smtpd_check.c.
+
+20110624
+
+	Cleanup: added error checks for smtpd access primitives
+	that don't automatically terminate the program after table
+	lookup error: these primitives are permit_tls_clientcerts,
+	permit_tls_all_clientcerts, and check_address_map (the last
+	one is used in local_header_rewrite_clients only).  File:
+	smtpd/smtpd_check.c.
+
+20110729
+
+	Workaround: some getpwnam() and getpwuid() implementations
+	cause mail to bounce ("user unknown") after LDAP etc. lookup
+	error. Postfix now uses POSIX getpwnam_r() and getpwuid_r()
+	where available. Initially, this workaround supports FreeBSD,
+	Solaris and Linux. Files: makedefs, util/sys_defs.h,
+	global/mypwd.[hc], local/alias.c, local/dotforward.c,
+	local/include.c, local/mailbox.c, local/recipient.c.
+
+20110731
+
+	MacOS X 10.5 supports POSIX getpwnam_r() and getpwuid_r()
+	(source: MacOS manpages at www.freebsd.org). If MacOS turns
+	out to make a false promise, then we will undo this change.
+	Files: makedefs, util/sys_defs.h.
+
+20110810
+
+	Cleanup: optimize an optimization to avoid uid->name lookup
+	when all users are authorized with authorized_submit_users,
+	authorized_mailq_users, authorized_flush_users.  File:
+	global/user_acl.c.
+
+20110811
+
+	Workaround: report a {client_connections} Milter macro value
+	of zero instead of garbage, when the remote SMTP client is
+	not subject to any smtpd_client_* limits. Problem reported
+	by Christian Roessner. Files: smtpd/smtpd_state.c,
+	proto/MILTER_README.html.
+
+20110817
+
+	Cleanup: avoid misleading error messages after future code
+	change. The tls_bio_ops(3) module now returns non-zero errno
+	values only when requests fail due to a system-call error.
+	File: tls/tls_bio_ops.c.
+
+	Cleanup: TLS handshake error messages. The SMTP client and
+	server now report STARTTLS network errors as "connection
+	timed out", "connection reset by peer", etc., instead of
+	reporting TLS error number 0.  Files: tls/tls_bio_ops.c,
+	tls/tls_server.c, tls/tls_client.c.
+
+20110818
+
+	Cleanup: VSTREAM-over-TLS error return values, for robustness
+	against future change.  For consistency with VSTREAM internal
+	interfaces, the tls_stream(3) read/write routines now return
+	-1 instead of unspecified negative OpenSSL results.  File:
+	tls/tls_stream.c.
+
+20110819
+
+	Cleanup: further TLS code cleanups, for robustness against
+	future change.  Unexpected TLS errors are no longer silently
+	treated as ordinary errors, and one corner-case error in TLS
+	timeout handling was fixed before it could cause trouble.
+	File: tls/tls_bio_ops.c.
+
+20110821-24
+
+	Cleanup: simplified the TLS read/write deadline implementation,
+	and documented why this same simplification is not possible
+	higher-up, at the VSTREAM level. Files: tls/tls_bio_ops.c,
+	util/vstream.c.
+
+20110831
+
+	Bugfix: allow for Milters that send an SMTP server reply
+	without RFC 3463 enhanced status code. Reported by Vladimir
+	Vassiliev.  File: milter/milter8.c.
+
+20110902
+
+	Cleanup: don't log vstream_tweak "connection reset by peer"
+	errors. File: util/vstream_tweak.c.
+
+20110904-7
+
+	Bugfix: master daemon panic with "master_spawn: at process
+	limit", when "postfix reload" reduces the process limit
+	from (a value larger than the current process count for
+	some service) to (a value <= the current process count),
+	and then a new connection is made to that service. This
+	structural solution centralizes the decision to monitor a
+	service port (or not). To improve robustness against future
+	code changes, it clarifies some of the internal dependencies
+	that exist inside the master daemon.  Files: master/master.h,
+	master/master_avail.c, master/master_conf.c,
+	master/master_service.c, master/master_spawn.c.
+
+20110911
+
+	Debugging: report the request size when memory allocation
+	fails.  File util/mymalloc.c.
+
+20110914
+
+	Incompatibility: the default inet_protocols value is now
+	"all" instead of "ipv4", meaning use both IPv4 and IPv6.
+	As a compatibility workaround for sites without global IPv6
+	connectivity, the commands "make upgrade" and "postfix
+	upgrade-configuration" append "inet_protocols = ipv4" to
+	main.cf when no explicit setting is present.  This compatibility
+	workaround will be phased out in a future release.  Files:
+	util/sys_defs.h, conf/post-install, proto/postconf.proto.
+
+	Incompatibility: the default smtp_address_preference value
+	is now "any" instead of "ipv6", meaning choose randomly
+	between IPv6 and IPv4.  With this the Postfix SMTP client
+	will have more success delivering mail to sites that have
+	problematic IPv6 configurations.  Files: global/mail_params.h,
+	proto/postconf.proto.
+
+20110918
+
+	Workaround for multiple ancient FreeBSD getsockopt() bugs
+	after non-blocking connect fails with 'host unreachable'
+	that resulted in a unreasonable memory allocation request.
+	File: util/vstream_tweak.c.
+
+20110921
+
+	Bugfix (introduced: Postfix 1.1): smtpd(8) did not sanitize
+	newline characters in cleanup(8) REJECT messages, causing
+	them to be sent out via SMTP as bare newline characters.
+	This happened when a REJECT pattern matched multi-line
+	header text.  Discovered by Kevin Locke.  File: smtpd/smtpd.c.
+
+20110922
+
+	Bugfix (introduced: Postfix 2.1): smtpd(8) sent multi-line
+	responses from a before-queue content filter as text with
+	bare <LF> instead of <CR><LF>.  Found during code maintenance.
+	File: smtpd/smtpd_proxy.c.
+
+20111011
+
+	Cleanup: for consistency with the SMTP standard, the
+	smtp_line_length_limit default value was increased from 990
+	characters to 998 (i.e. 1000 characters including <CR><LF>).
+	File: global/mail_params.h, proto/postconf.proto.
+
+	Cleanup: the Postfix sendmail command now always transforms
+	all input lines ending in <CR><LF> into UNIX format (lines
+	ending in <LF>).  This simplifies integration with third-party
+	mail generating applications. Specify "sendmail_fix_line_endings
+	= strict" to restore historical Postfix behavior (i.e. convert
+	all input lines ending in <CR><LF> only if the first input
+	line ends in <CR><LF>).  Files: sendmail/sendmail.c,
+	global/mail_params.h, proto/postconf.proto.
+
+20111017
+
+	Cleanup: refined the heuristic that automagically transforms
+	legacy "sendmail -V" VERP requests into contemporary "sendmail
+	-XV" syntax.  File: sendmail/sendmail.c.
+
+	Cleanup: when the cleanup daemon goes into discard mode,
+	don't get stuck when it runs onto milter file descriptor
+	information. File: cleanup/cleanup.c.
+
+20111020
+
+	EAI Future-proofing: don't apply strict_mime_encoding_domain
+	checks to unknown message subtypes such as message/global*.
+	File: global/mime_state.c.
+
+20111025
+
+	Bugfix (introduced: Postfix 2.8): postscreen sent non-compliant
+	SMTP responses (220- followed by 421) when it could not
+	hand off a connection to a real smtpd process, causing some
+	remote SMTP clients to bounce mail. The fix redirects the
+	client to the dummy SMTP engine which sends the 421 reply
+	at the first legitimate opportunity.  Problem reported by
+	Ralf Hildebrandt. Files: postscreen/postscreen_send.c,
+	postscreen/postscreen_smtpd.c, postscreen/postscreen.h.
+
+20111102
+
+	Workaround: to improve inter-operability with broken remote
+	SMTP servers, the Postfix SMTP client by default no longer
+	appends the "AUTH=<>" option to the MAIL FROM command.
+	Specify "smtp_send_dummy_mail_auth = yes" to restore the
+	old behavior.
+
+20111106
+
+	Feature: "postconf -M" support to show Postfix's idea of
+	what is in the master.cf file. File: postconf/postconf.c.
+
+	Feature: postconf "-f" option to "nicely" format long lines
+	from main.cf or master.cf. File: postconf/postconf.c.
+
+20111108
+
+	Cleanup: postconf finally supports dynamic configuration
+	parameter names: parameters whose name depend on a mail
+	delivery transport or spawn service in master.cf, and
+	parameters whose names are specified with smtpd_restriction_classes
+	in main.cf. This adds 70 parameters to the "postconf" output,
+	more if additional mail delivery transports are defined in
+	master.cf.  File: postconf/postconf.c.
+
+20111109
+
+	Cleanup: account for "," in smtpd_restriction_classes
+	value (Victor Duchovni). File: postconf/postconf.c.
+
+20111112
+
+	Cleanup: postconf finally warns about possible mis-typed
+	main.cf and master.cf parameter names (i.e. parameters that
+	aren't used anywhere), and it finally displays user-defined
+	main.cf parameters that *are* used.  File: postconf/postconf.c.
+
+20111113
+
+	Portability: specify ``make makefiles "CCARGS=-DNO_NIS
+	..."'' to build on systems without NIS support. Files:
+	makedefs, util/sys_defs.h.
+
+	Cleanup: documented the postconf algorithms and their
+	limitations, and added regression tests to speed up future
+	development. File: postconf/postconf.c
+
+20111117
+
+	Cleanup: postconf didn't "bless" type "inet" service names.
+
+	Cleanup: with pipelined sessions, smtp-sink flushed the
+	output too often. Reported by Mark Martinec. File:
+	smtpstone/smtp-sink.c.
+
+	Workaround: don't use IPv6 at build time. File: conf/main.cf.
+
+	Workaround: don't abort when IPv6 is present but busted.
+	File: util/inet_proto.c.
+
+	Portability: the Dovecot 2.0 authentication server supports
+	more socket types for its authentication server. File:
+	xsasl/xsasl_dovecot_server.c.
+
+	Documentation: the Dovecot 2.0 authentication server supports
+	communication over TCP sockets. Patrick Ben Koetter.  File:
+	proto/SASL_README.html.
+
+20111118
+
+	Cleanup: "postconf -M" now supports filtering. For example,
+	"postconf -M inet" shows only services that listen on the
+	network, and "postconf -M smtp.unix" shows the SMTP delivery
+	agent. File: postconf.c.
+
+20111119
+
+	Cleanup: "postconf" commands in postfix-install needed to
+	be updated before master.cf was installed.  Reported by
+	Sahil Tandon. File: postfix-install.
+
+20111120
+
+	Cleanup: support for parameter name spaces for master.cf
+	entries. With this, postconf should no longer log false
+	warnings for "-o user-defined-name=value" in master.cf.  As
+	a benefit, it will warn for user-defined parameters with
+	"name=value" entries that are unused because they are hidden
+	by master.cf "-o name=value" entries with the same parameter
+	name.  File: postconf/postconf.c.
+
+20111121
+
+	Cleanup: documentation fixes. File: postconf/postconf.c.
+
+	Cleanup: in postconf "main.cf management" mode, errors
+	opening master.cf are non-fatal. File: postconf/postconf.c.
+
+20111122
+
+	Documentation: examples to request VERP-style delivery at
+	SMTP time with the smtpd_command_filter feature.  Files:
+	proto/VERP_README.html, proto/postconf.proto.
+
+	Feature: TLS certificate public-key fingerprint matching
+	(SMTP server and client), and TLS logging cleanup. Victor
+	Duchovni. Files: proto/SMTPD_POLICY_README.html,
+	proto/TLS_README.html, proto/postconf.proto, global/mail_proto.h,
+	smtpd/smtpd_check.c, tls/tls.h, tls/tls_client.c, tls/tls_misc.c,
+	tls/tls_proxy_print.c, tls/tls_proxy_scan.c, tls/tls_server.c,
+	tls/tls_stream.c, tls/tls_verify.c.
+
+	Documentation: complete list of "make makefiles" overrides.
+	File: proto/INSTALL.html.
+
+	Cleanup: postscreen now logs more than the first word of
+	non-SMTP commands. File: postscreen/postscreen_smtpd.c.
+
+20111124
+
+	Cleanup: eliminated false postconf "unused parameter"
+	warnings with legacy parameters such as $virtual_maps, and
+	with non-default parameter values for smtpd_expansion_filter
+	that can contain legitimate "$" without a macro name.
+
+	Cleanup: split postconf source into separate modules.
+	Files: postconf/postconf.c, postconf/postconf_builtin.c,
+	postconf/postconf_edit.c, postconf/postconf_main.c,
+	postconf/postconf_master.c, postconf/postconf_misc.c,
+	postconf/postconf_node.c, postconf/postconf_other.c,
+	postconf/postconf_service.c postconf/postconf_unused.c,
+	postconf/postconf_user.c, postconf/postconf.h.
+
+20111126
+
+	Bitrot: changes in error reporting to the under-documented
+	OpenLDAP API. Problem reported by Quanah Gibson-Mount. Fix
+	by Viktor Dukhovni. File: global/dict_ldap.c.
+
+	Cleanup: four-space indentation had become a tab character.
+	Files: postconf/postconf.h, postconf/test20.ref,
+	postconf/test21.ref.
+
+20111127
+
+	Cleanup: documented <transport>_suffix parameters that don't
+	show in postconf command output of earlier Postfix versions.
+	Files: proto/SMTPD_POLICY_README.html, proto/postconf.proto,
+	proto/SCHEDULER_README.html.
+
+	Cleanup: added the pipe(8) delivery agent to the list of
+	programs that implement transport_time_limit parameters.
+	File: postconf/postconf_service.c, postconf/test6.ref,
+	postconf/test22.ref.
+
+20111128
+
+	Feature: "postconf -C class,..." support to print parameters
+	in one or more classes (builtin= built-in parameter names,
+	service=service-defined parameter names, user=user-defined
+	parameter names). Files: postconf/postconf.c, postconf/postconf.h,
+	postconf_service.c, postconf/postconf_user.c.
+
+20111129
+
+	Cleanup: TLS logging level configuration. Files:
+	global/mail_params.h, smtp/lmtp_params.c, smtp/smtp.c,
+	smtp/smtp_params.c, smtp/smtp_proto.c, smtpd/smtpd.c,
+	tls/tls.h, tls/tls_client.c, tls/tls_misc.c, tls/tls_server.c,
+	tlsmgr/tlsmgr.c, tlsproxy/tlsproxy.c.
+
+20111203
+
+	Cleanup: time-dependent sender addresses of address
+	verification probes.  Specify an address_verify_sender_ttl
+	value of several hours or more to frustrate address harvesting.
+	Files: global/verify_sender_addr.[hc], smtpd/smtpd.c,
+	smtpd/smtpd_check.c, verify/verify.c, proto/postconf.proto,
+	proto/ADDRESS_VERIFICATION_README.html.
+
+20111204
+
+	Cleanup: removed the log_level arguments from tls_client_start()
+	and tls_server_start() calls. This information is already
+	given to tls_client_init() and tls_server_init(). Files:
+	smtpd/smtpd.c, tlsproxy/tlsproxy.c, smtp/smtp_proto.c,
+	tls/tls.h, tls/tls_client.c, tls/tls_server.c, tls/tls_misc.c.
+
+20111205
+
+	Documentation: made the postconf(5) manpage more precise
+	in its use of "client" and "server"; reorganized the
+	TLS_README presentation of client configuration so that
+	most relevant information is presented earlier. Files:
+	proto/postconf.proto, proto/TLS_README.html.
+
+	Bugfix: tlsproxy(8) stored TLS sessions with a serverID of
+	"tlsproxy" instead of "smtpd", wasting an opportunity for
+	session reuse.  File: tlsproxy/tlsproxy.c.
+
+20111206
+
+	Documentation: removed descriptions of Postfix < 2.3 user
+	interface from TLS_README. Users of earlier releases are
+	referred to TLS_LEGACY_README. File: proto/TLS_README.html.
+
+20111207
+
+	Cleanup: tlsproxy(8) now receives the session cache serverID
+	from its client (postscreen(8)). Files: global/mail_proto.h,
+	postscreen/postscreen_starttls.c, tlsproxy/tlsproxy.[hc],
+	tlsproxy_state.c.
+
+	Cleanup: the postscreen(8) daemon did not support a zero
+	cache cleanup interval. This is needed for memcache support.
+	File: postscreen/postscreen.c.
+
+	Bugfix (introduced: 20110227): null pointer bug while
+	updating dictionary owner attributes, after reading an empty
+	(database) configuration file. File: util/dict.c.
+
+20111208
+
+	Cleanup: db_common_parse_domain() could not be called without
+	preceding db_common_parse() call. Files: global/db_common.[hc].
+
+20111209
+
+	Feature: memcache client support. This implementation is
+	based on the under-documented libmemcache library, and
+	therefore supports only libmemcache version 1.4.0.  Files:
+	conf/postfix-files, global/dict_memcache.[hc], global/mail_dict.c,
+	html/index.html, mantools/postlink, postconf/postconf.c,
+	postfix/postfix.c, proto/DATABASE_README.html,
+	proto/MEMCACHE_README.html, proto/memcache_table.
+
+20111209
+
+	Cleanup: support for scripted and manual database tests with
+	LDAP, *SQL, and memcache. Files: util/dict_test.c, util/dict.c,
+	global/mail_dict.c.
+
+	Workaround: apparently, some distributions use Postfix
+	shared libraries without proper so-number versioning. This
+	causes programs to fail mysteriously, after an update
+	replaces the Postfix library but not the program (someone
+	experienced this with an extra copy of the Postfix SMTP
+	server).  Files: global/mail_version.[hc], master/*server.c,
+	master/master.c, src/postalias/postalias.c,
+	src/postdrop/postdrop.c, src/postfix/postfix.c,
+	src/postlog/postlog.c, src/postmap/postmap.c,
+	src/postmulti/postmulti.c, src/postqueue/postqueue.c,
+	src/postsuper/postsuper.c, src/sendmail/sendmail.c.
+
+20111211
+
+	Feature: first/next (sequence) support in the proxymap
+	protocol. This is needed for cache cleanup of a proxied
+	postscreen or verify persistent cache. Files:
+	global/dict_proxy.[hc], proxymap/proxymap.c.
+
+	Feature: memcache client support without libmemcache
+	dependencies. Files: global/memcache_proto.[hc],
+	global/dict_memcache.c.
+
+	Bugfix: missing lookup table entry and terminator, causing
+	proxymap(8) server segfault when postscreen(8) or verify(8)
+	attempted to access their cache via the proxymap(8) server.
+	This could never have worked anyway, because the Postfix
+	proxymap protocol did not support cache cleanup.  File
+	util/dict.c.
+
+	Feature: support for persistent backup database in the
+	memcache client. The database can be shared with the proxymap
+	service, but it needs to be listed as "proxy:maptype:mapname"
+	in the proxy_read_maps or proxy_write_maps parameter value
+	(depending on whether the access is read-only or read-write).
+	Support for proxymap-over-tcp (proxy:maptype:mapname@host:port)
+	is under development.  File: global/dict_memcache.c.
+
+20111214
+
+	Documentation: updated the submission and smtps examples
+	in the sample master.cf file, so that their logging is
+	easier to recognize.  File: conf/master.cf.
+
+20111215
+
+	Documentation: use different hosts to separate MUA "port
+	25" traffic from the "port 25" MX service. Files:
+	postscreen/postscreen.c, proto/POSTSCREEN_README.html.
+
+20111216
+
+	Cleanup: the proxymap client did not correctly propagate
+	the "open_lock" flag, causing the proxymap service to open
+	postscreen(8) and verify(8) caches twice, instead of once.
+	File: global/dict_proxy.c.
+
+	Cleanup: the verify and postscreen caches were not listed
+	as "authorized" for access via the proxywrite service. File:
+	global/mail_params.h.
+
+	Refactoring: the postscreen permanent access list code is
+	now a library module, so that it can be also used for remote
+	access to the proxymap server.  Files: global/server_acl.[hc].
+
+	Hardening: read/write deadlines, to make the proxymap server
+	suitable for remote access. File: proxymap/proxymap.c.
+
+20111217
+
+	Cleanup: more orthogonal definition of when the proxymap
+	server can/cannot share a single map instance among multiple
+	requestors, and corresponding code cleanup in the proxymap
+	client and server. Files: util/dict.h, util/dict_test.c,
+	global/dict_proxy.c, proxymap/proxymap.c.
+
+	Human factors: the postscreen/verify cache manager now logs
+	the full database name including the proxy: prefix, to avoid
+	WTF surprises. File: util/dict_cache.c.
+
+20111218
+
+	Cleanup: more configurable memcache client error handling.
+	Files: global/dict_memcache.c, proto/memcache_table.
+
+	Feature: the Postfix SMTP server XCLIENT command now supports
+	the LOGIN attribute (e.g., login information from nginx).
+	Based on the nginx:xclient-login-patch from citrin.ru (Anton
+	Yuzhis). The patch was further enhanced to support SASL
+	login information everywhere in the Postfix SMTP server
+	without having to specify "smtpd_sasl_auth_enable = yes"
+	in main.cf.  Files: smtpd.[hc], smtpd_sasl_glue.[hc],
+	smtpd_check.c, smtpd_sasl_proto.[hc], smtpd_state.c,
+	proto/XCLIENT_README.html.
+
+	Incompatibility: the Postfix SMTP server now always checks
+	the smtpd_sender_login_maps table, even without having
+	"smtpd_sasl_auth_enable = yes" in main.cf.
+
+20111219
+
+	Cleanup: the match_list-based primitives now provide an
+	option to return an error result instead of terminating the
+	process with a fatal error.  Files: util/match_ops.[hc],
+	util/match_list.c, global/addr_list_match.c, domain_list.c,
+	string_list.c, namadr_list.c.
+
+	Cleanup: a "fail:" database type that reliably fails all
+	requests. The lookup table name specifies the internal error
+	result code. having this table facilitates a systematic
+	review of all Postfix table lookup error handling.
+
+	Cleanup: trivial-rewrite now "catches" errors with implicit
+	database lookups in virtual_alias_domains, relay_domains,
+	virtual_mailbox_domains, just like it already caught explicit
+	database lookup errors. This means there are fewer occasions
+	where trivial-rewrite clients will appear to hang. File:
+	trivial-rewrite/resolve.c.
+
+	Cleanup: a broken relay_domains table would cause many
+	Postfix processes to terminate with fatal error as they
+	initialized the flush() client (used by defer_append()
+	etc.). Postfix now logs a warning instead.  File:
+	global/flush_clnt.c.
+
+	Cleanup: the Postfix SMTP server now "catches" errors with
+	implicit database lookups in mynetworks, TLS client certificate
+	tables, and local_header_rewrite_clients, and reports "server
+	configuration error" or "table lookup error" instead of
+	terminating with a fatal error. This is work in progress;
+	errors with opening a database may be covered later. Files:
+	smtpd/smtpd.c, smtpd/smtpd_check.c.
+
+20111220
+
+	Cleanup: the Postfix SMTP server now "catches" errors with
+	implicit database lookups in mynetworks, debug_peer_list,
+	smtpd_client_event_limit_exceptions, permit_mx_backup_networks.
+	This continues work started 20111219, and does not cover
+	errors with opening a database.  Files: smtpd/smtpd.c,
+	smtpd/smtpd_checks.c, smtpd/smtpd_error.in, smtpd/smtpd_error.ref.
+
+	Cleanup: memory leak testing of error handling. File:
+	util/name_mask.c.
+
+20111222
+
+	Cleanup: memory leak testing of error handling. File:
+	util/name_mask.c.
+
+	Cleanup: simplified the match_list error reporting, thereby
+	reducing the footprint of the changes to "catch" errors
+	with implicit database lookups in mynetworks, and other
+	lists.  Files: util/match_ops.[hc], util/match_list.c,
+	global/addr_list_match.c, domain_list.c, string_list.c,
+	namadr_list.c, trivial-rewrite/resolve.c, smtpd/smtpd.c,
+	smtpd/smtpd_check.c, global/flush_clnt.c, flush/flush.c.
+
+20111224
+
+	Cleanup: eliminated the global dict_errno variable that
+	made error reporting convenient but not necessarily precise.
+	This was a straightforward change except in the few modules
+	that propagate errors from one dictionary API to another:
+	dict_cache.c, dict_debug.c, maps.c, dict_memcache.c.  Files:
+	src/cleanup/cleanup_map11.c, src/cleanup/cleanup_map1n.c,
+	src/global/addr_match_list.c, src/global/dict_ldap.c,
+	src/global/dict_memcache.c, src/global/dict_mysql.c,
+	src/global/dict_pgsql.c, src/global/dict_proxy.c,
+	src/global/dict_sqlite.c, src/global/domain_list.c,
+	src/global/flush_clnt.c, src/global/mail_addr_find.c,
+	src/global/mail_addr_map.c, src/global/maps.c, src/global/maps.h,
+	src/global/match_parent_style.h, src/global/namadr_list.c,
+	src/global/resolve_local.c, src/global/resolve_local.h,
+	src/global/server_acl.c, src/global/string_list.c,
+	src/local/alias.c, src/local/bounce_workaround.c,
+	src/local/mailbox.c, src/local/unknown.c, src/proxymap/proxymap.c,
+	src/qmqpd/qmqpd.c, src/smtp/smtp_map11.c, src/smtpd/smtpd_check.c,
+	src/trivial-rewrite/resolve.c, src/trivial-rewrite/transport.c,
+	src/util/dict.h, src/util/dict_alloc.c, src/util/dict_cache.c,
+	src/util/dict_cidr.c, src/util/dict_db.c, src/util/dict_debug.c,
+	src/util/dict_env.c, src/util/dict_fail.c, src/util/dict_ht.c,
+	src/util/dict_pcre.c, src/util/dict_regexp.c,
+	src/util/dict_static.c, src/util/dict_tcp.c, src/util/dict_test.c,
+	src/util/dict_thash.c, src/util/dict_unix.c, src/util/match_list.c,
+	src/util/match_list.h, src/util/match_ops.c, src/virtual/mailbox.c.
+
+20111226
+
+	Bugfix (introduced 20110426): after lookup error with
+	mailbox_transport_maps, mailbox_command_maps or
+	fallback_transport_maps, the local delivery agent did not
+	log the problem before deferring mail, and produced no defer
+	logfile record. Files: local/mailbox.c, local/unknown.c.
+
+20120102
+
+	Workaround: degrade gracefully when the network protocols
+	specified with inet_protocols are unavailable.  Files:
+	global/mail_params.c, global/mynetworks.c, global/own_inet_addr.c
+	master/master_ent.c, master/master_vars.c, postscreen/postscreen.c,
+	qmqpd/qmqpd.c, smtp/smtp_connect.c, smtpd/smtpd.c,
+	util/inet_proto.c.
+
+20120107
+
+	Workaround: degrade gracefully when the "domain" feature
+	of LDAP, *SQL and memcache databases has a table lookup
+	problem.  Files: global/db_common.c, global/dict_ldap.c,
+	global/dict*sql*.c, global/dict_memcache.c.
+
+	Cleanup: fixed memcache client error handling for things
+	that never happen.  global/dict_memcache.c.
+
+	Future proofing: prepare postmap/postalias error logging
+	for future changes to database code. Files: postalias/postalias.c,
+	postmap/postmap.c.
+
+20120108
+
+	Cleanup: the postscreen(8) and verify(8) cache managers log
+	warnings at a reduced rate of one per second per cache
+	operation, to avoid logging large numbers of warnings about
+	a problem with low-value information. File: util/msg_rate_delay.c,
+	util/dict_cache.c.
+
+20120110
+
+	Cleanup: added logging for failed table lookups, and replaced
+	some "fatal" errors by warnings. Files: cleanup/cleanup_addr.c,
+	cleanup/cleanup_message.c, cleanup/cleanup_milter.c,
+	cleanup/cleanup_masquerade.c, global/header_body_checks.c,
+	global/smtp_stream.c, postscreen/postscreen_dnsbl.c,
+	postscreen/postscreen_smtpd.c, smtp/smtp_chat.c,
+	smtp/smtp_proto.c, smtp/smtp_sasl_auth_cache.c,
+	smtp/smtp_sasl_glue.c, smtp/smtp_session.c, smtp/smtp_trouble.c,
+	smtpd/smtpd.c, smtpd/smtpd_check.c.
+
+20120114
+
+	Cleanup: gradual degradation after database file open errors.
+	Instead of terminating immediately with a "fatal" error, a
+	Postfix daemon logs an error and continues execution with
+	reduced functionality. In other words, features that don't
+	depend on the unavailable table will keep working.  However,
+	for the sake of sanity, the number of such errors over the
+	life of a process is limited to 13.  Files:
+	src/global/cfg_parser.c, src/util/dict_thash.c,
+	src/util/dict_cidr.c, src/util/dict_nis.c, src/util/dict_nisplus.c,
+	src/global/dict_ldap.c, src/global/dict_mysql.c,
+	src/global/dict_pgsql.c, src/global/dict_sqlite.c,
+	src/postconf/postconf_main.c, src/global/mail_conf.c,
+	src/util/dict.h, src/util/dict.c, src/global/dict_memcache.c,
+	src/util/dict_tcp.c, src/util/dict_unix.c, src/util/dict_pcre.c,
+	src/util/dict_regexp.c, src/master/trigger_server.c,
+	src/master/single_server.c, src/master/multi_server.c,
+	src/master/event_server.c, src/util/dict_test.c,
+	src/util/dict_surrogate.c, src/util/dict_alloc.c, src/util/msg.c,
+	src/util/dict_cdb.c, src/util/dict_dbm.c, src/util/msg.h,
+	src/util/dict_db.c.
+
+	Incompatibility: the Postfix SMTP server no longer reports
+	transcripts of sessions where a client command is rejected
+	because a table is unavailable.  To receive such reports,
+	add the new "data" class to the notify_classes parameter
+	value. The reports will be sent to the error_notice_recipient
+	address as before. This class is also used by the Postfix
+	SMTP client to report about sessions that fail because a
+	table is unavailable. Files: global/mail_error.[hc],
+	smtpd/smtpd_check.c, smtp/smtp_trouble.c.
+
+20120115
+
+	Fine tuning: SMTP server error messages. File: smtpd/smtpd.c.
+
+	Fine tuning: documentation. Files: proto/MEMCACHE_README.html.
+	proto/memcache_table.html.
+
+	Apply "gradual degradation" also when an unsupported database
+	*type* is specified. File: util/dict_open.c.
+
+	Cleanup: tiny memory leaks after surrogate database opens.
+	Files: util/dict_cidr.c, util/dict_db.c.
+
+20120117
+
+	Cleanup: support for legacy-style database configuration
+	where parameter names are generated by appending suffixes
+	to the database name. Files: postconf/postconf_dbms.c.
+
+	Other: build without Berkeley DB support (make makefiles
+	"CCARGS=$CCARGS -DNO_DB"). Files: makedefs, util/sys_defs.h,
+	proto/DB_README.html, proto/INSTALL.html.
+
+20120120
+
+	Compatibility: added file pflogsumm_quickfix.txt with quick
+	patches for pflogsumm that handle the new default master.cf
+	entries for the submission and smtps services.
+
+20120121
+
+	Cleanup: getopt(3) compatibility in the postconf(1) master.cf
+	parser. Process "--" as the end-of-options indicator, and
+	process "-oname=value" as "-o name=value".  Files:
+	util/argv.[hc], postconf/postconf_master.cf,
+	postconf/postconf_user.c.
+
+20120122
+
+	Workaround: log a warning and suggested solution for common
+	stat()/fstat()/lstat() problems caused by 32-bit overflow.
+	This is a real stinker that causes Postfix to fail without
+	any prior warning.  File: util/warn_stat.[hc], and everything
+	that directly calls stat(), fstat() or lstat().
+
+20120127
+
+	Bugfix (introduced: Postfix 2.8): the Postfix client sqlite
+	quoting routine returned the unquoted result instead of the
+	quoted text.  The opportunities for misuse are limited,
+	because Postfix sqlite files are usually owned by root, and
+	Postfix daemons usually run with non-root privileges so
+	they can't corrupt the database. Problem reported by Rob
+	McGee (rob0).  File: global/dict_sqlite.c.
+
+20120130
+
+	Bugfix (introduced: Postfix 2.3): the trace service did not
+	distinguish between DSN SUCCESS notifications for a non-bounce
+	or a bounce message. This code pre-dates DSN support and
+	should have been updated when it was re-purposed to handle
+	DSN SUCCESS notifications. Problem reported by Sabahattin
+	Gucukoglu.  File: bounce/bounce_trace_service.c.
+
+20120202
+
+	Bugfix (introduced: Postfix 2.3): the "change header" milter
+	request could replace the wrong header. A long header name
+	could match a shorter one, because a length check was done
+	on the wrong string.  Reported by Vladimir Vassiliev.  File:
+	cleanup/cleanup_milter.c.
+
+20120214
+
+	Bugfix (introduced: Postfix 2.4): extraneous null assignment
+	caused core dump when postlog emitted the "usage" message.
+	Reported by Kant (fnord.hammer). File: postlog/postlog.c.
+
+20120217
+
+	Bugfix (introduced 20111219): sendmail -bs segfault, due
+	to a missing guard statement after an smtpd_check_rewrite()
+	call was moved closer to the command processor loop. Fix
+	by Bartek Szady. File: smtpd/smtpd.c.
+
+20120220
+
+	Cleanup: documentation of how to use only system-supplied
+	certificates with *CAfile and *CApath. File: proto/postconf.proto.
+
+	Cleanup: documentation of smtp_sasl_mechanism_filter.  File:
+	proto/postconf.proto.
+
+20120222
+
+	Cleanup: when multiple DNSBLs block an SMTP client, the
+	postscreen "reject" message now gives credit to the DNSBL
+	with the largest weight, instead of the DNSBL that replies
+	first. File: postscreen/postscreeb_dnsbl.c.
+
+	Cleanup: memcache_table(5) manpage. File proto/memcache_table.
+
+20120225
+
+	Cleanup: eliminated the build-time Perl dependency.  File:
+	bounce/annotate.sh.
+
+	Cleanup: when -DNO_DB support was added, the makedefs script
+	was not updated to skip the Linux Berkeley DB tests.
+
+	FreeBSD9 is now a supported platform. Files: makedefs,
+	util/sys_defs.h.
+
+20120226
+
+	Cleanup: documentation in postfix-install.
+
+20120229
+
+	Feature: smtpd_log_access_permit_actions to enable logging
+	of specific permit-like actions in Postfix SMTP server
+	access lists.  Files: mantools/postlink, proto/postconf.proto,
+	global/mail_params.h, smtpd/smtpd.c, smtpd/smtpd_check.c.
+
+20120306
+
+	To improve the interaction with start-up scripts, "postfix
+	start" now waits for master daemon process initialization
+	to complete, and returns a non-zero exit status if daemon
+	initialization failed or if it did not complete in a
+	reasonable amount of time. This involves a new "-w" master
+	option.  Files: conf/postfix-script, master/master.c,
+	master/master.h.  master/master_monitor.c.
+
+20120307
+
+	postconf -X option to exclude parameters from main.cf
+	(require two-finger action, because this is irreversible).
+	Files: postconf/postconf.[hc], postconf/postconf_edit.c.
+
+20120317
+
+	Feature: Sendmail-style socketmap.  Files: util/dict_sockmap.[hc],
+	util/netstring.[hc], proto/DATABASE_README.html,
+	postconf/postconf.c.
+
+20120330
+
+	Workaround: specify "\c" at the start of an smtpd_reject_footer
+	template to suppress the line break between the reply text
+	and the footer text. Files: global/smtp_reply_footer.c,
+	proto/postconf.proto.
+
+20120401
+
+	Bugfix (introduced Postfix 2.6): irrelevant memory leak
+	that was introduced with postconf -#. File:
+	postconf/postconf_edit.c.
+
+	Bitrot: shut up useless warnings about Cyrus SASL call-back
+	function pointer type mis-matches. Files: xsasl/xsasl_cyrus.h,
+	xsasl/xsasl_cyrus_server.c, xsasl/xsasl_client.c.
+
+20120404
+
+	Cleanup: added smtpd_sender_login_maps to the default
+	proxy_read_maps value. Files: global/mail_params.h,
+	proxymap/proxymap.c.
+
+	Cleanup: weed out stale TODO's from the WISHLIST, and moved
+	some CYA text from WISHLIST into the code. Files: WISHLIST,
+	smtpd/smtpd_proxy.c.
+
+20120407
+
+	Bugfix (introduced: 20120330): don't replace <reply-code>
+	<space> by <reply-code> <hyphen> when a reply footer starts
+	with \c and contains no \n. File: global/smtp_reply_footer.c.
+
+20120422
+
+	Bit-rot: OpenSSL 1.0.1 introduces new protocols. Update the
+	known TLS protocol list so that protocols can be turned off
+	selectively to work around implementation bugs.  Based on
+	a patch by Victor Duchovni.  Files: proto/TLS_README.html,
+	proto/postconf.proto, tls/tls.h, tls/tls_misc.c, tls/tls_client.c,
+	tls/tls_server.c.
+
+20120425
+
+	Workaround: bugs in 10-year old gcc versions break compilation
+	with #ifdef inside a macro invocation (NOT: definition).
+	Files: tls/tls.h, tls/tls_client.c, tls/tls_server.c.
+
+20120426
+
+	Bugfix (introduced Postfix 2.9): the postconf command flagged
+	parameters defined in master.cf as "unused" when they were
+	used only in main.cf. Problem reported by Michael Tokarev.
+	Files: postconf/postconf_user.c, postconf/test4b.ref,
+	postconf Makefile.in.
+
+20120513
+
+	Cleanup: report both the first and last line number when a
+	malformed main.cf entry spans multiple lines, instead of
+	reporting the last line number only. File: util/dict.c,
+	util/line_number.[hc].
+
+20120516
+
+	Workaround: apparently, FreeBSD 8.3 kqueue notifications
+	sometimes break when a dnsblog(8) process loses an accept()
+	race on a shared socket, resulting in repeated "connect to
+	private/dnsblog service: Connection refused" warnings.  This
+	condition is unique to dnsblog(8). The postscreen(8) daemon
+	closes a postscreen-to-dnsblog connection as soon as it
+	receives a dnsblog(8) reply, resulting in hundreds or
+	thousands of connection requests per second.  All other
+	multi-server daemons such as anvil(8) or proxymap(8) have
+	connection lifetimes ranging from 5s to 1000s depending on
+	server load.  The workaround is for dnsblog to use the
+	single_server driver instead of the multi_server driver.
+	This one-line code change eliminates the accept() race
+	without any Postfix performance impact.  Problem reported
+	by Sahil Tandon.  File: dnsblog/dnsblog.c.
+
+	Logging: postscreen now logs a warning when a dnsblog(8)
+	request takes longer than the hard-coded time limit of 10s.
+	File: postscreen/postscreen_dnsbl.c.
+
+20120517
+
+	Workaround: to avoid crashes when the OpenSSL library is
+	updated without "postfix reload", the Postfix TLS session
+	cache ID now includes the OpenSSL library version number.
+	Note: this problem cannot be fixed in tlsmgr(8). Code by
+	Victor Duchovni. Files: tls/tls_server.c, tls_client.c.
+
+20120520
+
+	Bugfix (introduced Postfix 2.4): the event_drain() function
+	was comparing bitmasks incorrectly causing the program to
+	always wait for the full time limit. This error affected
+	the unused postkick command, but only after s/fifo/unix/
+	in master.cf.  File: util/events.c.
+
+	Cleanup: laptop users have always been able to avoid
+	unnecessary disk spin-up by doing s/fifo/unix/ in master.cf
+	(this is currently not supported on Solaris systems).
+	However, to make this work reliably, the "postqueue -f"
+	command must wait until its requests have reached the pickup
+	and qmgr servers before closing the UNIX-domain request
+	sockets.  Files: postqueue/postqueue.c, postqueue/Makefile.in.
+
+20120522
+
+	Robustness: set LC_ALL=C in post-install to avoid surprises
+	when parsing output from Postfix or non-Postfix commands.
+	File: postfix-install.
+
+20120611
+
+	Bugfix (introduced: 20031216-21): with soft_bounce=yes, the
+	SMTP client did not move on to the next MX host or fallback
+	relay after a 5xx reply. File: smtp/smtp_trouble.c.
+
+20120527-8
+
+	Infrastructure: limited support to shrink VSTREAM buffers.
+	The change takes place when reading from (a stream for the
+	first time | an empty buffer) or when writing to (a stream
+	for the first time | a full buffer). TODO: the change should
+	also happen after purging or flushing a buffer.  File:
+	util/vstream.c.
+
+20120531-617
+
+	Feature: haproxy support in postscreen(8) and smtpd(8).  To
+	enable, specify "smtpd_upstream_proxy_protocol = haproxy"
+	or "postscreen_upstream_proxy_protocol = haproxy".  Files:
+	mantools/postlink, proto/postconf.proto, global/Makefile.in,
+	global/haproxy_srvr.c, global/haproxy_srvr.h, global/mail_params.h,
+	global/mail_proto.h, master/single_server.c, master/multi_server.c,
+	master/event_server.c, postscreen/Makefile.in,
+	postscreen/postscreen.c, postscreen/postscreen.h,
+	postscreen/postscreen_endpt.c, postscreen/postscreen_haproxy.c,
+	postscreen/postscreen_haproxy.h, postscreen/postscreen_send.c,
+	postscreen/postscreen_state.c, smtpd/Makefile.in, smtpd/smtpd.h,
+	smtpd/smtpd_peer.c, smtpd/smtpd_sasl_glue.c, smtpd/smtpd_haproxy.c,
+	util/Makefile.in, util/listen.h, util/recv_pass_attr.c,
+	util/stream_listen.c, util/sys_defs.h, util/unix_pass_listen.c.
+
+20120618
+
+	Cleanup: made the postscreen-to-smtpd haproxy attribute
+	transmission more robust for Solaris. Files: util/sys_defs.h,
+	util/connect.h, util/steam_listen.c, postscreen/postscreen_send.c.
+
+	Cleanup: simplified the "stream used" workaround. Files:
+	util/vstream.h, master/event_server.c, master/multi_server.c.
+
+20120621
+
+	Cleanup: simplified workarounds for Solaris streams versus
+	UNIX-domain sockets.  Files: util/pass_accept.c (new),
+	util/pass_trigger.c (new), util/stream_pass_connect.c
+	(deleted), util/unix_pass_listen.c (deleted),
+	util/unix_pass_trigger.c (deleted), updated header files,
+	and replaced PASS_XXX macros by pass_xxx function calls.
+
+	Cleanup: don't clobber errno when logging a problem.
+	File util/msg_output.c.
+
+20120627
+
+	Bugfix (introduced: 20120531-617): in the postscreen module
+	for HAproxy sypport, a VSTREAM buffer size request was not
+	LP64-clean.  File: postscreen/postscreen_haproxy.c.
+
+	Cleanup: avoid single-character reads in the postscreen
+	HAproxy module. File: postscreen/postscreen_haproxy.c.
+
+20120628
+
+	Workaround: heuristic to detect missing (ssize_t) type-cast
+	in VSTREAM buffer size requests. File: util/vstream.c.
+
+20120629
+
+	Workaround: "sendmail -bl" emulation. File: sendmail/sendmail.c.
+
+20120630
+
+	Cleanup: sub-optimal hash performance on systems where the
+	"char" type is signed.  Files: util/htable.c, util/binhash.c.
+
+20120702
+
+	Bugfix (introduced: 19990127): the BIFF client leaked an
+	unprivileged UDP socket. Fix by Jaroslav Skarvada.  File:
+	local/biff_notify.c.
+
+20120713
+
+	Bugfix (introduced: 20120527-8): infrastructure to specify
+	a smaller-than-default VSTREAM buffer, without the complex
+	run-time checks. File: util/vstream.c, vstream_tweak.c.
+
+20120714
+
+	Cleanup: semantics of requests to query or modify the VSTREAM
+	buffer size that will be used with the next read(2) or
+	write(2) operation. Files: util/vstream.c, util/vstream.h,
+	util/vstream_tweak.c.
+
+20120717
+
+	Documentation: update to RFC5321.
+
+20120730
+
+	Bugfix (introduced: 20000314): AUTH is not allowed after
+	MAIL. Timo Sirainen.  Files: smtpd/smtpd.c, smtpd/smtpd.h,
+	smtpd/smtpd_sasl_proto.c.
+
+20120801
+
+	Documentation: point of what virtual_xxx parameters are
+	specific to the virtual(8) delivery agent, and will have
+	no effect when mail is delivered with a different program.
+	Files: proto/postconf.proto, proto/VIRTUAL_README.html.
+
+20120824
+
+	Feature: support for "sendmail -R hdrs|full". Jan Kundr?t.
+	File: sendmail/sendmail.c.
+
+20120902
+
+	Documentation: updated TUNING_README with new pointers to
+	the STRESS_README and POSTSCREEN_README documents. Miscellaneous
+	documentation clarifications based on postfix-users discussions.
+
+20120903
+
+	Bugfix (introduced 20120317): the socketmap client should
+	not share unrelated client endpoint handles. File:
+	util/dict_sockmap.c.
+
+20120907
+
+	Cleanup (for change 20120824): the DSN RET attribute should
+	not be stored once per recipient. It is a message property
+	just like DSN ENVID.  File: sendmail/sendmail.c.
+
+20120911
+
+	Documentation: more explicit enumeration of what happens
+	when setting a per-destination recipient limit value to 1.
+	File: proto/postconf.proto.
+
+20120918
+
+	Documentation: clarified the bounce/queue_life-time parameter
+	descriptions. File: proto/postconf.proto.
+
+20120920
+
+	Documentation: the postscreen_whitelist_interfaces parameter
+	syntax was defined only by example. File: proto/postconf.proto.
+
+20120923
+
+	Infrastructure: cleaned up the support for database
+	lock-on-open. This is needed for databases that are not
+	multi-updater safe.  Files: util/dict_alloc.c, util/dict.c,
+	util/dict_open.c, util/dict.h.  tls/tls_scache.c.
+
+20120924
+
+	Documentation: some people are read-challenged distribute
+	their own incorrect understanding of master.cf syntax.
+	File: proto/master.
+
+	Cleanup: don't emulate UNIX-domain sockets over FIFOs on
+	Solaris systems less than 10 years old. This allows us to
+	globally s/fifo/unix/ in master.cf.  Files: makedefs,
+	util/sys_defs.h.
+
+	Laptop-friendliness: avoid disk spin-up on idle systems by
+	s/fifo/unix/ in master.cf.  Files: conf/master.cf.
+
+20120928-30
+
+	Feature: smtpd_relay_restrictions, proposed long ago by
+	Victor. The idea is to separate the mail relay policy from
+	the spam blocking policy, so that a permissive spam blocking
+	policy under smtpd_recipient_restrictions will no longer
+	unexpectedly result in a permissive mail relay policy.
+
+	This involves a change in default settings.  Similar to the
+	way that local_recipient_maps was introduced, there is a
+	safety net that prevents unexpected mail bounces when a
+	site upgrades to Postfix 2.10 or later, and there is no
+	change in documented smtpd_recipient_restrictions behavior.
+	See the RELEASE_NOTES file for details.  Files:
+	global/mail_params.h, smtpd/smtpd.c, smtpd/smtpd_check.c,
+	proto/postconf.proto, proto/SMTPD_ACCESS_README.html,
+	mantools/postlink, conf/post-install, RELEASE_NOTES.
+
+20120931-1001
+
+	Documentation: updated the remainder of the README files
+	and manual pages that discuss smtpd_recipient_restrictions.
+
+20121001
+
+	Cleanup: prepend 5.1.1 status code to "User unknown in
+	virtual alias table". File: trivial-rewrite/resolve.c.
+
+20121003
+
+	Bugfix: the postscreen_access_list feature was case-sensitive
+	in the first character of permit, reject, etc. Reported by
+	Francis Picabia. File: global/server_acl.c.
+
+20121009
+
+	Documentation: interaction between delay_warning_time,
+	notify_classes and delay_notice_recipient. File:
+	proto/postconf.proto.
+
+20101009
+
+	Human factors: log a warning that the postcat option -m
+	without -h or -b has no effect. File: postcat/postcat.c.
+
+20121010
+
+	Bugfix (introduced: Postfix 2.5): memory leak in program
+	initialization. Reported by Coverity. File: tls/tls_misc.c.
+
+	Bugfix (introduced: Postfix 2.3): memory leak in the unused
+	oqmgr program. Reported by Coverity. File: oqmgr/qmgr_message.c.
+
+20121011
+
+	Documentation: how to enable /etc/hosts multi-record lookups
+	with main.cf settings.  File: proto/LINUX_README.html.
+
+	Documentation: clarified the postscreen-tlsproxy interface.
+	File: tlsproxy/tlsproxy.c.
+
+20121012
+
+	Documentation: a simpler null-client example.  File:
+	proto/STANDARD_CONFIGURATION_README.html
+
+20121013
+
+	Cleanup: to compute the LDAP connection cache lookup key,
+	join the numeric fields with null, just like string fields.
+	Viktor Dukhovni. File: global/dict_ldap.c.
+
+20121015
+
+	Documentation: added section on regular-expression tables
+	to the aliases(5) manpage. File: proto/aliases.
+
+	Documentation: why "smtp_address_preference = any" is the
+	preferred setting. File: proto/postconf.proto.
+
+20121022
+
+	Bugfix (introduced 20101009) don't complain about stray -m
+	option if none of -[bhm] is specified. Ralf Hildebrandt.
+	File: postmap/postmap.c.
+
+20121029 
+
+	Workaround: strip datalink suffix from IPv6 addresses
+	returned by the system getaddrinfo() routine.  Such suffixes
+	mess up the default mynetworks value, host name/address
+	verification and possibly more. This change obsoletes the
+	20101108 change that removes datalink suffixes in the SMTP
+	and QMQP servers.  Files: util/myaddrinfo.c, smtpd/smtpd_peer.c,
+	qmqpd/qmqpd_peer.c.
+
+20121031
+
+	Bugfix: smtpd_relay_restrictions compatibility shim did not
+	detect "empty" value.  Sahil Tandon. The same problem existed
+	with the inet_protocols shim. File: conf/post-install.
+
+20121105
+
+	Cleanup: the postscreen(8) "deep protocol" tests now log
+	the SMTP command that precedes a protocol violation.  Files:
+	postscreen/postscreen_smtpd.c, proto/POSTSCREEN_README.html.
+
+	Bugfix (introduced: Postfix 1.1): wrong string termination
+	when handling an MBOX From_ line at the start of a message.
+	File: qmqpd/qmqpd.c.
+
+20121110
+
+	Cleanup: specify $(WARN) on the MacOS X compiler command
+	line to suppress "nested comment" and possibly other unwanted
+	warnings. Problem reported by Jim Reid. File: makedefs,
+	Makefile.in.
+
+20121119
+
+	Documentation: added a note that key_format is required
+	when postscreen(8) and verify(8) share the same memcache
+	(with different persistent backup databases, or course)
+	otherwise automatic cache cleanup breaks due to a name
+	collision for the "last cache cleanup" database record.
+	File: proto/memcache.
+
+20121122
+
+	Cleanup: the safety-check for smtpd_recipient_restrictions
+	and smtpd_relay_restrictions now detects permit before
+	reject.  File: smtpd/smtpd_check.c.
+
+	Cleanup: the safety-check for smtpd_recipient_restrictions
+	and smtpd_relay_restrictions is no longer case-sensitive.
+	File: smtpd/smtpd_check.c.
+
+20121123
+
+	Cleanup: consistent escaping of commands in postscreen deep
+	protocol test logging. File: postscreen/postscreen_smtpd.c.
+
+20121124
+
+	Documentation: the bounce behavior for automatically-added
+	BCC recipients has changed with Postfix 2.3 when DSN support
+	was introduced.  File: proto/postconf.proto.
+
+20121203
+
+	Documentation: added explicit example for -o name=value.
+	File: proto/master.
+
+20121210
+
+	Bugfix (introduced: Postfix 2.9) nesting count error while
+	stripping the optional [] around a DNS[BW]L address pattern.
+	This part of the code is not documented and had escaped
+	testing.  Files: util/ip_match.c, util/ip_match.in,
+	util/ip_match.ref.
+
+20121215
+
+	Bugfix (introduced: 19980218, when recipient_delimiter
+	support was added): The error message for unknown local
+	users (or missing required aliases) should report the user
+	name instead of the full localpart which may contain an
+	address extension.  Problem reported by Christian Holler.
+	File: local/unknown.c.
+
+20121221
+
+	Feature: "postconf -x" support to expand $name in main.cf
+	parameter values. Files: postconf/postconf_main.c,
+	postconf/postconf.h, postconf/postconf_node.c, postconf/postconf.c.
+
+20121222
+
+	Feature: postconf support to warn about an attempt to modify
+	a read-only parameter (process_name etc.) in main.cf or
+	master.cf. Files: postconf/postconf_readonly.c,
+	postconf/postconf_builtin.c.
+
+20121223
+
+	Feature: postconf support to warn about an undefined $name
+	in a parameter value in main.cf or master.cf (except for
+	backwards-compatibility parameters such as $virtual_maps)
+	Files: postconf/postconf_user.c, postconf_dbms.c,
+	postconf_builtin.c, util/dict_ht.c, util/htable.c.
+
+	Feature: "postconf -Mx" support to expand $name in master.cf
+	parameter values.  Files: postconf/postconf_master.c,
+	postconf/postconf_lookup.c, postconf/postconf_main.c,
+	postconf/postconf.c.
+
+20121224
+
+	Feature: "postconf -Mn" support to print only master.cf
+	entries that have "-o name=value" parameter setttings.
+	Files: postconf/postconf_master.c.
+
+20121226
+
+	Miscellaneous cleanups of postconf internal APIs, identifiers
+	and comments. No changes in behavior.
+
+	Bugfix (omission in feature 20111203): the SMTP server only
+	supported time-dependent address-verification sender addresses
+	with RCPT TO but not with MAIL FROM. File: smtpd/smtpd.c.
+
+20121227
+
+	Feature: "postconf -o name=value" support to override main.cf
+	settings (for example, "postconf -x -o stress=whatever"
+	shows effective settings under overload). Files:
+	postconf/postconf.c, postconf/postconf_main.c.
+
+20121230
+
+	Cleanup: postconf(1) master.cf options parser. Files:
+	postconf/postconf_master.c, postconf/postconf_user.c.
+
+	Bugfix (omission in feature 20111106): the postconf(1)
+	master.cf options parser didn't support "clusters" of
+	command-line option letters. Files: postconf/postconf_master.c,
+	postconf/test40.ref.
+
+20130105
+
+	Undo a change made around 20121224, and always whitelist
+	configuration parameter names for legacy-style proxy:ldap:prefix
+	etc.  lookup tables.  Files: postconf/postconf_dbms.c,
+	postconf/test28.ref, postconf/test29.ref, postconf/Makefile.in.
+
+20130107
+
+	Factor out the master.cf line parser so that it can be
+	reused for "postconf -Me". File: postconf/postconf_master.c.
+
+20130113
+
+	Feature: master.cf attribute namespace. "postconf -F" shows
+	individual master.cf fields as "service/type/attribute =
+	value", where attribute is "service", "type", "private",
+	"unprivileged", "wakeup", "process_limit", or "command".
+
+20130121
+
+	Bugfix (introduced 20120307): the postconf -X option erased
+	other options.  File: postconf/postconf.c.
+
+20130131
+
+	Bugfix: the local(8) delivery agent dereferenced a null
+	pointer while delivering to null command (for example, "|"
+	in a .forward file).  Reported by Gilles Chehade.
+
+20130203
+
+	Bugfix: the undocumented OpenSSL X509_pubkey_digest()
+	function is unsuitable for computing certificate PUBLIC KEY
+	fingerprints.  Postfix now provides a correct procedure
+	that accounts for the algorithm and parameters in addition
+	to the key data.  Specify "tls_legacy_public_key_fingerprints
+	= yes" if you need backwards compatibility. Fix by Victor
+	Duchovni, BC added by Wietse.  Files: tls/tls_verify.c,
+	tls/tls_misc.c, proto/TLS_README.html, global/mail_params.h.
+
+20130210
+
+	Bugfix: an error handler for smtp_tls_policy_maps lookups
+	was never invoked.  File: smtp/smtp_session.c.
+
+20130212
+
+	Cleanup: logfile message formatting (X: subject_CN=X,
+	issuer_CN=X, fingerprint=X, pkey_fingerprint=X). File:
+	tls/tls_client.c.
+
+20130315
+
+	Feature: LMDB (memory-mapped persistent file) support by
+	Howard Chu. This implementation has unexpected failure modes
+	that don't exist with other Postfix databases, so don't
+	just yet abandon CDB.  See LMDB_README for details.  Files:
+	proto/postconf.proto, proto/LMDB_README.html,
+	proto/DATABASE_README.html, proto/INSTALL.html util/dict_lmdb.[hc],
+	util/dict_open.c, global/mkmap_lmdb.[hc], global/mkmap_open.c,
+	postconf/postconf.c.
+
+20130316
+
+	Cleanup: new Postfix dictionary API flag to control the use
+	of (LMDB) bulk database transactions.  With this, LMDB
+	databases no longer fail to commit any transactions with
+	tlsmgr(8), and LMDB databases no longer perform glacially
+	slow with postmap -i/postalias -i.  Files: util/dict.h,
+	util/dict_lmdb.c, postmap/postmap.c, postalias/postalias.c.
+
+20130317
+
+	Debugging: generalized setting of dictionary API flags.
+	File: util/dict.[hc], util/dict_test.c.
+
+	Robustness: Postfix programs can now recover from LMDB
+	"database full" errors without requiring human intervention.
+	When a program opens an LMDB file larger than lmdb_map_size/3,
+	it logs a warning and uses a larger size limit instead.
+	Files: util/dict_lmdb.c, proto/LMDB_README.html.
+
+20130318
+
+	Portability: botched #ifdef. File: util/dict_lmdb.c.
+
+20130319
+
+	Postfix support for LMDB databases is suspended due to the
+	existence of a hard limit (an "out of storage" failure mode
+	that cannot be resolved by increasing the database size).
+
+	Postfix may support LMDB again when it no longer limits the
+	size of Postfix transactions, whether the limit is built
+	into LMDB itself, or implicit by requiring an unbounded
+	amount of memory to handle a large transaction.
+
+20130322
+
+	Documentation: smtp_skip_5xx_greeting wording updated to
+	reflect text in RFC 2821, which appears to say that a 554
+	greeting is not a hard delivery error (note that RFC 2821
+	was published later than smtp_skip_5xx_greeting). File:
+	proto/postconf.proto.
+
+20130324
+
+	Workaround: MacOS 10.8 (Darwin 12) getrlimit(RLIMIT_NOFILE)
+	incorrectly reports that rlim_max, the hard limit on the
+	number of open files per process, is equal to RLIM_INFINITY
+	(i.e. no limit is enforced).  In reality, setrlimit(RLIMIT_NOFILE)
+	rejects requests where rlim_cur, the current limit, contains
+	any value > kern.maxfilesperproc.  Axel Luttgens.  File:
+	util/open_limit.c.
+
+	Portability: MacOS 10.8 (Darwin 12) kqueue support works.
+	Axel Luttgens. Files: makedefs.
+
+20130324
+
+	Support for anonymous certificates. Viktor Dukhovni. File:
+	tls/tls_verify.c.
+
+	Feature: support for DNSSEC-validated lookups and TLSA
+	RRsets.  Viktor Dukhovni. Files: dns/Makefile.in, dns/dns.h,
+	dns/dns_lookup.c, dns/dns_rr.c, dns/dns_strtype.c,
+	dns/test_dns_lookup.c,
+
+	Cleanup: the personality switch between "smtp" and "lmtp".
+	This streamlines the switch in the SMTP/LMTP protocol, DNS
+	MX lookups, and configuration parameter names in error
+	messages.  Viktor Dukhovni. Files: smtp/smtp.c, smtp/smtp.h,
+	smtp/smtp_chat.c, smtp/smtp_connect.c, smtp/smtp_proto.c,
+	smtp/smtp_rcpt.c, smtp/smtp_sasl_glue.c, smtp/smtp_sasl_proto.c,
+	smtp/smtp_session.c, smtp/smtp_state.c.
+
+	Feature: replace disable_dns_lookups with smtp_dns_support_level,
+	enable secure DNSSEC lookups in the Postfix SMTP client,
+	and use the DNSSEC-validated remote SMTP server name to
+	select the SMTP and TLS policies.  Viktor Dukhovni. Files:
+	dns/Makefile.in, dns/dns.h, dns/dns_lookup.c, dns/dns_rr.c,
+	dns/dns_strtype.c, dns/test_dns_lookup.c.
+
+20130325
+
+	Portability: on MacOS X, use kqueue() for event handling
+	but use select() instead of poll() for read/write timeouts
+	(with a workaround to handle file decriptors >=FD_SETSIZE).
+	Files: util/sys_defs.h, util/readable.c, util/writable.c,
+	util/read_wait.c, util/write_wait.c.
+
+	Portability: support for NetBSD 5.x, NetBSD 6.x and DragonFly
+	BSD. Viktor Dukhovni. Files: makedefs, util/sys_defs.h.
+
+20130326
+
+	Cleanup: new module that consolidates all system-dependent
+	code to enforce read/write timeouts. This includes a final
+	workaround for MacOS X that uses poll() first, and select()
+	if that fails.  This makes their /dev/urandom workaround
+	unnecessary. Files: util/poll_fd.c, util/iostuff.h.  Removed:
+	util/readable.c, util/writable.c, util/read_wait.c,
+	util/write_wait.c.
+
+	Cleanup: refactor TLS digest functions, improved signature
+	for TLS session cache. Viktor Dukhovni. Files: smtp/smtp.c,
+	smtp/smtp_proto.c, smtpd/smtpd.c, tls/Makefile.in, tls/tls.h,
+	tls/tls_client.c, tls/tls_fprint.c, tls/tls_level.c,
+	tls/tls_misc.c, tls/tls_server.c, tls/tls_verify.c,
+	tlsproxy/tlsproxy.c.
+
+20130327
+
+	Cleanup: final polish for MacOSX workarounds; replaced
+	#ifdef MacOSX by feature test as required by PORTING document.
+	Files: util/poll_fd.c, util/open_limit.c.
+
+	Export tls_fprint() and tls_digest_encode() for use in DANE.
+	Viktor Dukhovni. Files: tls/tls.h, tls/tls_fprint.c.
+
+20130331
+
+	Refactoring: TLS verification callback processing in
+	preparation for DANE support. Viktor Dukhovni. Files:
+	tls/tls.h, tls/tls_client.c, tls/tls_misc.c, tls/tls_verify.c.
+
+	Refactoring: split off SMTP client per-session TLS policy
+	data and code in preparation for DANE support.  Viktor
+	Dukhovni.  Files: smtp/Makefile.in, smtp/smtp.h,
+	smtp/smtp_connect.c, smtp/smtp_proto.c, smtp/smtp_reuse.c,
+	smtp/smtp_session.c, smtp/smtp_tls_sess.c.
+
+	Cleanup: "zero time limit" corner case in read_wait() and
+	write_wait() emulation. Files: util/poll_fd.c, util/iostuff.h.
+
+20130401
+
+	Refactoring: allow smtp_session_alloc() to fail gracefully
+	and report an error.
+
+20130403
+
+	Documentation: in smtpd.c, the comment that justifies the
+	454 reply for "TLS unavailable" cited the wrong RFC.
+
+20130404
+
+	Human factors: warning when a main.cf parameter has multiple
+	entries with different values.  File: util/dict.c.
+
+20130405
+
+	Feature: the recipient_delimiter parameter can now specify
+	a set of characters. A user name is now separated from its
+	address extension by the first character that matches the
+	recipient_delimiter set.  Files: proto/postconf.proto,
+	src/global/mail_addr_find.c, src/global/mail_params.c,
+	src/global/split_addr.c, src/global/split_addr.h,
+	src/global/strip_addr.c, src/global/strip_addr.h,
+	src/global/strip_addr.ref, src/local/bounce_workaround.c,
+	src/local/local.c, src/local/local_expand.c, src/local/recipient.c,
+	src/local/resolve.c, src/oqmgr/qmgr_message.c, src/pipe/pipe.c,
+	src/qmgr/qmgr_message.c, src/smtpd/smtpd.c,
+	src/smtpd/smtpd_check.c, src/trivial-rewrite/transport.c,
+	src/trivial-rewrite/trivial-rewrite.c.
+
+	Feature: support for trust anchors, i.e. CA certificates
+	or public keys that will be used instead of conventional
+	root certificates, and revised fingerprint support.  This
+	can be used by itself, and this provides support for an
+	upcoming DANE implementation.  Victor Duchovni.  Files:
+	mantools/postlink, proto/TLS_README.html, proto/postconf.proto,
+	global/mail_params.h, smtp/lmtp_params.c, smtp/smtp.c,
+	smtp/smtp.h, smtp/smtp_params.c, smtp/smtp_proto.c,
+	smtp/smtp_session.c, smtp/smtp_state.c, smtp/smtp_tls_sess.c,
+	tls/Makefile.in, tls/tls.h, tls/tls_client.c, tls/tls_dane.c,
+	tls/tls_fprint.c, tls/tls_misc.c, tls/tls_verify.c,
+	util/argv.c, util/argv.h.
+
+20130409
+
+	Documentation: pointers to other actions under "ACCEPT
+	ACTIONS" and "REJECT ACTIONS". File: proto/access.
+
+20130410
+
+	Cleanup: more uniform permutation in dns_rr() by Victor
+	Duchovni & Son. File: dns/dns_rr.c.
+
+20130411
+
+	Documentation: clarified text about result formats. Files:
+	proto/canonical, proto/virtual.
+
+20130414
+
+	Cleanup: the SMTP client connection management code now
+	maintains iterator state with a structure that contains
+	next-hop, host name, address, port and other information.
+	This iterator structure replaces random variables that were
+	updated by add-hoc code, and replaces random function
+	argument lists. The more structured approach is easier to
+	maintain and has already paid off by exposing opportunities
+	to improve SMTP connection cache usage.  Wietse Venema.
+	Files: smtp/smtp.h, smtp/smtp_connect.c, smtp/smtp_session.c,
+	smtp_reuse.c.
+
+	Cleanup: eliminated minor false SMTP connection cache-sharing
+	problems due to mis-aligned lookup keys for caches and
+	lookup tables (for example some used the nexthop, and some
+	the domain name).  Information that is used in more than
+	one lookup key is now generated by a centralized function.
+	This replaces ad-hoc code in random places that was
+	concatenating ad-hoc data to construct lookup keys. The
+	more structured approach is easier to maintain and makes
+	future cache-sharing issues easier to prevent.  Wietse
+	Venema. Files: smtp/smtp.h, smtp/smtp_connect.c, smtp_reuse.c,
+	smtp_key.c, smtp_tls_sess.c.
+
+	Cleanup and fix of non-production code: the trust anchor-digest
+	code and smtp_sess_tls_required() function. Victor Duchovni.
+	Files: smtp/smtp_connect.c, smtp/smtp_proto.c,
+	smtp/smtp_tls_sess.c, tls/tls.h, tls/tls_client.c,
+	tls/tls_dane.c, tls/tls_level.c, tls/tls_verify.c.
+
+20130417
+
+	Cleanup and fix of non-production code: add the SASL
+	credentials or absence thereof to the connection cache
+	endpoint label; better reuse of SASL-authenticated connections
+	over UNIX-domains sockets, however unlikely these may be;
+	a first step towards refinement of connection cache lookup
+	by IP address for plaintext or SASL-unauthenticated connections.
+	Files: smtp/smtp.h smtp/smtp_connect.c, smtp/smtp_reuse.c,
+	smtp/smtp_key.c, smtp/smtp_tls_sess.s.
+
+20130418
+
+	Cleanup: configurable field delimiter and optional "not
+	available" field place holder for cache and table lookup
+	keys; automatic base64 encoding for key fields that contain
+	these. Files: smtp/smtp_key,c, smtp/smtp_reuse.c,
+	smtp/smtp_proto.c, smtp/smtp_tls_sess.c.
+
+20130420-21
+
+	Documentation: "dane" TLS security level and parameters.
+	Viktor Dukhovni. Files: mantools/postlink, proto/TLS_README.html,
+	proto/postconf.proto.
+
+	Feature: implemented and enabled DNS-based DANE security
+	level.  Viktor Dukhovni. Files: global/mail_params.h,
+	smtp/lmtp_params.c, smtp/smtp.c, smtp/smtp.h, smtp/smtp_params.c,
+	smtp/smtp_proto.c, smtp/smtp_tls_sess.c, tls/tls.h,
+	tls/tls_client.c, tls/tls_dane.c, tls/tls_fprint.c,
+	tls/tls_level.c, tls/tls_misc.c, util/Makefile.in,
+	util/ctable.c, util/ctable.h, util/timecmp.c, util/timecmp.h.
+
+	Cleanup: rename (unchanged) smtp_tls_sess.c to smtp_tls_policy.c.
+	Viktor Dukhovni. Files: smtp/Makefile.in, smtp/smtp_tls_policy.c,
+	smtp/smtp_tls_sess.c.
+
+	Portability: OpenSSL workarounds for versions before 0.9.7
+	are removed from the source code. Viktor Dukhovni. Files:
+	tls/tls.h, tls/tls_bio_ops.c, tls/tls_client.c.
+
+	Non-production fixes: when falling back from opportunistic
+	TLS to plaintext, don't modify the cached TLS policy "retry
+	as plaintext" and "level" members.  Files: smtp/smtp_session.c.
+
+	Non-production fixes: move TLS policy lookup to the main
+	connection iterator loop, so that the policy is known before
+	attempting connection reuse and before SMTP connection
+	creation. Temporarily link session->tls to state->tls.
+	Files: smtp/smtp.h, smtp/smtp_connect.c, smtp/smtp_reuse.c,
+	smtp/smtp_tls_policy.c.
+
+20130422
+
+	Feature: smtptls-finger test program for SMTP over TLS.
+	Viktor Dukhovni. Files: Makefile.in, html/Makefile.in,
+	man/Makefile.in, mantools/postlink, posttls-finger/.indent.pro,
+	posttls-finger/Makefile.in, posttls-finger/posttls-finger.c,
+	posttls-finger/tlsmgrmem.c, posttls-finger/tlsmgrmem.h,
+	tls/tls.h, tls/tls_misc.c.
+
+20130423
+
+	Bugfix (introduced: Postfix 2.0): when myhostname is not
+	listed in mydestination, the trivial-rewrite resolver may
+	log "do not list <myhostname value> in both mydestination
+	and <name of non-mydestination domain list>".  The fix is
+	to re-resolve a domain-less address after adding $myhostname
+	as the surrogate domain, so that it pops out with the right
+	address-class label.  Problem reported by Quanah Gibson-Mount.
+	File: trivial-rewrite/resolve.c.
+
+20130425
+
+	Non-production fixes: revert to using proxies (sender,
+	nexthop, hostname) to distinguish between different SASL
+	credentials for connections to the same IP address and port.
+	Files: smtp/smtp.h smtp/smtp_connect.c, smtp/smtp_key.c.
+
+	Non-production cleanup: documentation, identifiers.  Viktor
+	Dukhovni. Files: proto/postconf.proto, src/dns/dns.h,
+	src/dns/dns_lookup.c, src/dns/dns_rr.c, src/dns/test_dns_lookup.c,
+	src/global/mail_proto.h, src/posttls-finger/posttls-finger.c,
+	src/smtp/smtp.h, src/smtp/smtp_addr.c, src/smtp/smtp_connect.c,
+	src/smtp/smtp_session.c, src/smtp/smtp_tls_policy.c,
+	src/smtpd/smtpd_check.c, src/tls/tls.h, src/tls/tls_client.c,
+	src/tls/tls_dane.c, src/tls/tls_fprint.c, src/tls/tls_misc.c,
+	src/tls/tls_proxy_clnt.c, src/tls/tls_proxy_print.c,
+	src/tls/tls_proxy_scan.c, src/tls/tls_server.c,
+	src/tls/tls_verify.c.
+
+20130426
+
+	Non-production fixes: refinement of SASL-dependent context
+	for connection-cache reuse, documentation. Viktor Dukhovni
+	and Wietse Venema. Files: smtp/smtp.h, smtp/smtp_key.c,
+	tls/tls_client.c.
+
+20130506
+
+	Non-production bugfix: macros must use distinct names for
+	temporary variables, to avoid name collision problems.
+	Problem report: Ralf Hildebrandt. Problem fix: Viktor
+	Dukhovni.  File: smtp/smtp.h.
+
+	Non-production cleanup: simplified "dane" user interface,
+	replacing one "dane" security level plus multiple fall-back
+	options, with two "dane" security levels, one opportunistic
+	and one mandatory. Viktor Dukhovni.  Files: proto/TLS_README.html,
+	proto/postconf.proto, mantools/postlink, proto/TLS_README.html,
+	proto/postconf.proto, global/mail_params.h,
+	posttls-finger/posttls-finger.c, smtp/lmtp_params.c,
+	smtp/smtp.c, smtp/smtp.h, smtp/smtp_params.c,
+	smtp/smtp_tls_policy.c, tls/tls.h, tls/tls_level.c.
+
+20130512
+
+	Feature: allow an SMTP client to skip postscreen(8) tests
+	before or after the 220 greeting, based on its DNSBL score.
+	Suggested by Rob McGee (/dev/rob0). Files: mantools/postlink,
+	proto/postconf.proto, global/mail_params.h,
+	postscreen/postscreen.c, postscreen/postscreen.h,
+	postscreen/postscreen_early.c, postscreen/postscreen_state.c,
+	postscreen/postscreen_tests.c.
+
+20130513
+
+	Bugfix (introduced: 20130512): postscreen logged no "PASS
+	NEW" event when the pregreet tests were turned off and the
+	postscreen_dnsbl_whitelist_treshold feature was turned on.
+	Reported by Rob McGee (/dev/rob0). Files: postscreen/postscreen.h,
+	postscreen/postscreen_early.c.
+
+	Bugfix (introduced: 20130512): postscreen panic because the
+	logic for dnsbl result retrieval was changed. Reported by
+	Noel Jones. File: postscreen/postscreen_early.c.
+
+20130517
+
+	Cleanup: just like the postscreen DNS block test will use
+	partial scores when some DNS lookup result is unavailable,
+	the postscreen_dnsbl_whitelist_treshold feature will now
+	use partial scores instead of ignoring them.  File:
+	postscreen/postscreen_early.c.
+
+20130518
+
+	Bugfix (introduced: 1997): memory leak after error while
+	forwarding mail through the cleanup server. Viktor found
+	one, Wietse eliminated the rest.  File: local/forward.c.
+
+	Feature: posttls-finger protocol and cipher grade selection
+	options.  Leave protocol debug flags active across reconnects,
+	only suppress redundant logging of the certificate details.
+	Viktor Dukhovni. File: posttls-finger/posttls-finger.c.
+
+	Robustness: send SNI even when trying to reuse a DANE
+	session, because a new session may be negotiated anyway.
+	Viktor Dukhovni. File: tls/tls_client.c.
+
+	Cleanup: eliminate variable that is redundant with respect
+	to more authoritative state.  Viktor Dukhovni. File:
+	posttls-finger/posttls-finger.c.
+
+	Feature: new tls_ssl_options parameter to enable OpenSSL
+	features (as opposed to tls_disable_workarounds which is
+	disables bug workarounds that are on by default). Viktor
+	Dukhovni. Files: proto/TLS_README.html, proto/postconf.proto,
+	src/global/mail_params.h, src/tls/tls.h, src/tls/tls_client.c,
+	src/tls/tls_misc.c.
+
+20130520
+
+	Documentation: removed resolve_null_domain from the list
+	of smtpd(8) parameters. File: smtpd/smtpd.c.
+
+20130523
+
+	Documentation: add cidr: and texthash: to the list of maps
+	that don't have automatic change detection. File:
+	proto/DATABASE_README.html.
+
+	Documentation: define the netmask format of CIDR maps.
+	File: proto/cidr_table.
+
+20130530
+
+	Cleanup: replace alloca() with mymalloc()/myfree() for
+	better error handling. Reported by Bill Parker. File:
+	util/dict_ni.c (does anyone still use this code?).
+
+20130531
+
+	Feature: tls_wildcard_matches_multiple_labels (default:
+	yes) to match multiple DNS labels with "*" in wildcard
+	certificates. Viktor Dukhovni. Files: proto/postconf.proto,
+	mantools/postlink, global/mail_params.h, tls/tls_client.c,
+	tls/tls_misc.c.
+
+20130607
+
+	Bugfix (DANE support): with multiple TLSA RR that carry "x
+	0 0" certificates or "x 1 0" keys, Postfix failed to reset
+	the cert/key pointer before calling d2i_mumble(), causing
+	OpenSSL to clobber the previous cert or key.  Viktor Dukhovni.
+	tls/tls_dane.c.
+
+	Robustness: check that TLSA-supplied certs have valid keys.
+	It is not clear whether that check is performed in d2i().
+	Viktor Dukhovni. tls/tls_dane.c.
+
+20130608
+
+	Cleanup (DANE support): be more explicit in the logging of
+	object digests.  Viktor Dukhovni. tls/tls_dane.c.
+
+20100613
+
+	Workaround: unhelpful down-stream maintainers fail to install
+	the new smtpd_relay_restrictions safety net, causing breakage
+	that could have been avoided. We now hard-code the safety
+	net instead.  Files: global/mail_params.h, conf/post-install,
+	RELEASE_NOTES_2.10.
+
+	Bugfix (DANE support): when TLSA records are insecure,
+	report that none are found. Viktor Dukhovni. Files:
+	posttls-finger/posttls-finger.c, smtp/smtp_tls_policy.c,
+	tls/tls_dane.c.
+
+20130615
+
+	TLS Interoperability: turn on SHA-2 digests by force.  This
+	improves interoperability with clients and servers that
+	deploy SHA-2 digests without the required support for
+	TLSv1.2-style digest negotiation.  Based on patch by Viktor
+	Dukhovni.  Files: tls/tls_client.c, tls/tls_server.c.
+
+20130616
+
+	Workaround: The Postfix SMTP server TLS session cache was
+	broken because OpenSSL now enables session tickets by
+	default, resulting in different ticket encryption key for
+	each smtpd(8) process.  the workaround turns off session
+	tickets. In 2.11 we'll enable session tickets properly.
+	Viktor Dukhovni. File: tls/tls_server.c.
+
+	Updated DANE support (trust in DNS instead of PKI).  With
+	OpenSSL 1.0.2 (under development) trusted certificates don't
+	need to be self-signed roots.  Otherwise we use an ephemeral
+	root certificate to sign the trust anchor. Viktor Dukhovni.
+	Files: posttls-finger/posttls-finger.c, smtp/smtp_proto.c,
+	smtp/smtp_tls_policy.c, tls/tls.h, tls/tls_client.c,
+	tls/tls_dane.c, tls/tls_fprint.c, tls/tls_misc.c,
+	tls/tls_verify.c.
+
+20130619
+
+	Documentation: troff lint. Patch by ES Raymond's bot.  File:
+	proto/header_checks.
+
+	Cleanup: enforce smtpd_client_recipient_rate_limit for VRFY
+	commands. File: smtpd/smtpd.c.
+
+20130622
+
+	Bugfix: typo in the 20130613 smtpd_relay_restrictions default
+	setting. File: global/mail_params.h.
+
+20130623
+
+	Cleanup: configurable tlsmgr(8) service name. Files:
+	mantools/postlink, proto/postconf.proto, tls/tls_mgr.c,
+	tls/tls_misc.c, tlsproxy/tls-proxy.c, smtp/smtp.c,
+	smtpd/smtpd.c.
+
+20130629
+
+	Cleanup: documentation. Files: proto/CONNECTION_CACHE_README.html,
+	proto/SCHEDULER_README.html.
+
+20130708
+
+	Cleanup: postscreen_upstream_proxy_protocol setting.  Files:
+	global/mail_params.h, postscreen/postscreen_endpt.c.
+
+20130709
+
+	Cleanup: qmgr documentation clarification by Patrik Rak.
+	Files: proto/SCHEDULER_README.html, qmgr/qmgr_job.c.
+
+	Cleanup: re-indented code. File: qmgr/qmgr_job.c.
+
+	Logging: minimal DNAME support. Viktor Dukhovni.  dns/dns.h,
+	dns/dns_lookup.c, dns/dns_strtype.c, dns/test_dns_lookup.c.
+
+20130710
+
+	Workaround: smtp_connection_reuse_count_limit (default 0,
+	i.e.  unlimited) for sites that must deal with hostile
+	connection reuse policies. The documentation comes with a
+	warning that this feature introduces a "fatal attractor"
+	failure mode.  Files: global/mail_params.h, mantools/postlink,
+	proto/postconf.proto, smtp/smtp.c, smtp/smtp_params.c,
+	smtp/lmtp_params.c, smtp/smtp.h.
+
+	Workaround: FreeBSD9 nroff outputs ANSI escape sequences
+	instead of overstrike sequences. To make matters worse, it
+	uses the ESC[0m sequence sometimes for end-of-bold and
+	sometimes for end-of-italic.  File: mantools/man2html.
+
+20130714
+
+	Cleanup: added smtpd_relay_restrictions entries to the
+	default master.cf file, so that main.cf settings won't
+	affect the submission and smtps services. Simon Matter.
+	File: conf/master.cf.
+
+20130728
+
+	Cleanup: wrong function name in error message. John Fawcett.
+	File: util/vstring_vstream.c.
+
+20130801
+
+	Cleanup: with ``make makefiles CCARGS="-DHAS_DB...'', the
+	makedefs script no longer tries to locate the Linux Berkeley
+	DB include and library files. Instead it assumes that the
+	locations are given on the command line, as shown in the
+	DB_README examples.  Leo Baltus. File: makedefs.
+
+20130805
+
+	Documentation: clarified reject_non_fqdn_helo_hostname.
+	File: proto/postconf.proto.
+
+20130809
+
+	Cleanup: the lmdb_map_size parameter is now a long integer.
+	Howard Chu. Files: global/mail_params.[hc].
+
+20130815
+
+	Documentation: added pointer to Dovecot 2 configuration.
+	File: proto/SASL_README.html
+
+20130818
+
+	Update: LMDB client updated to LMDB 0.9.7, which hopefully
+	fixes the unrecoverable "transaction full" error. With a
+	new MDB_MAP_FULL workaround by Howard Chu that ensures that
+	postfix will make progress as long as the disk is not full.
+	File: util/dict_lmdb.c.
+
+20130822
+
+	The status of LMDB databases is "not recommended".  Unlike
+	other Postfix databases, LMDB does not grow beyond a specified
+	limit even when the file system has room.  This show-stopper
+	bug breaks applications whose requirements grow with load:
+	postscreen(8), greylisting, tlsmgr(8) and verify(8).
+
+20130825
+
+	Bitrot: Arrange for shared keys in SMTP server session
+	tickets.  Otherwise, with clients that enable session
+	tickets, the SMTP session cache is per-process and largely
+	ineffective.  Older releases should add SSL_OP_NO_TICKET
+	to the SSL options bit mask in the SMTP server only.  The
+	session ticket key validity interval (sum of initial issuing
+	and retired key validation intervals) must not exceed the
+	SSL session lifetime.  Otherwise, clients may send valid
+	tickets for expired sessions, which the OpenSSL server code
+	mishandles (does not send a replacement ticket, patch
+	pending...).
+
+	We set the session lifetime to 2 times the configured cache
+	lifetime which is also the ticket issuing and retired
+	validation lifetime, so ticketed sessions last 1 to 2 times
+	the configured session lifetime and never longer than a
+	session's expiration time. 
+
+	Code by Viktor Dukhovni.  Files: .indent.pro, mantools/postlink,
+	proto/TLS_README.html, proto/postconf.proto, global/mail_params.h,
+	posttls-finger/posttls-finger.c, posttls-finger/tlsmgrmem.c,
+	smtpd/smtpd.c, tls/tls.h, tls/tls_client.c, tls/tls_mgr.c,
+	tls/tls_mgr.h, tls/tls_scache.c, tls/tls_scache.h,
+	tls/tls_server.c, tlsmgr/tlsmgr.c, tlsproxy/tlsproxy.c.
+
+	Robustness: Search for TLSA RRs at the resolved server name
+	(rname) and failing that request server name (qname), and
+	use whichever was found as the TLSA base domain for certificate
+	matching.
+
+	When we find a DNSSEC validated MX RRset, and the initial
+	next-hop domain is a CNAME, include both the initial and
+	final (the one with the actual MX RRs) domains in the list
+	of valid server certificate names.
+
+	When we find no MX records, then the initial next-hop domain
+	is obtained securely from the recipient domain or transport
+	next-hop.  Without MX records, this is a destination hostname,
+	so we should generally do a TLSA lookup.  If however the
+	address lookup yields an insecure result, and its rname is
+	equal to its qname (no CNAMEs), we reasonably assume that
+	the its child "_port._tcp" sub-domain is likewise insecure
+	(security here would require DLV just for this sub-domain).
+	This allows us to skip futile TLSA queries for most non-MX
+	destinations (those that are in insecure zones and are not
+	CNAMEs).  This heuristic can be disabled by setting the new
+	main.cf parameter smtp_tls_force_insecure_host_tlsa_lookup
+	to "yes", the default is "no".
+
+	Finally, with MX hostnames, if the MX RRset is secure, we
+	look for TLSA RRs at the qname only when the MX host is an
+	alias with an insecure rname.  If both the qname and the
+	rname are secure, as before we prefer the rname, but when
+	nothing is found there, fall back to the qname.
+
+	Code by Viktor Dukhovni. Files: mantools/postlink,
+	proto/postconf.proto, src/global/mail_params.h,
+	src/posttls-finger/posttls-finger.c, src/smtp/lmtp_params.c,
+	src/smtp/smtp.c, src/smtp/smtp.h, src/smtp/smtp_addr.c,
+	src/smtp/smtp_addr.h, src/smtp/smtp_connect.c,
+	src/smtp/smtp_params.c, src/smtp/smtp_tls_policy.c,
+	src/tls/tls.h, src/tls/tls_dane.c.
+
+20130826
+
+	Documentation: re-ordered STRESS_README, now that all
+	supported releases have stress-adaptive behavior built in.
+	File: proto/STRESS_README.html.
+
+20130903
+
+	Cleanup: made the default_database_type compile-time
+	configurable. Files: util/sys_defs.h, makedefs, proto/INSTALL.
+
+20130916
+
+	Feature: reject_known_sender_login_mismatch, which applies
+	reject_sender_login_mismatch only to MAIL FROM addresses
+	that are known in $smtpd_sender_login_maps. Viktor & Wietse.
+	Files: mantools/postlink, proto/SASL_README.html,
+	proto/postconf.proto, global/mail_params.h, smtpd/smtpd_check.c.
+
+20130927
+
+	Cleanup: no more LMDB "database full" errors.  Postfix now
+	requires LMDB >= 0.9.8 which supports on-the-fly database
+	resizing. When a database becomes full, its size limit is
+	automatically doubled, and other processes automatically
+	pick up the new database size limit.  Files: util/dict.h,
+	util/dict_open.c, util/dict_alloc.c, util/dict_lmdb.c,
+	postmap/postmap.c, postalias/postalias.c, proto/LMDB_README.html,
+	proto/postconf.proto.
+
+20130928
+
+	Cleanup: the lmdb_max_readers property is now configurable.
+	This is a hard limit built into the OpenLDAP library that
+	causes requests to fail when the number of open read
+	transactions exceeds the limit.  When this happens the LMDB
+	client logs an MDB_READERS_FULL warning and continues with
+	reduced performance.  Files: util/dict_lmdb.c, util/dict_lmdb.h,
+	global/mail_params.h, global/mail_params.c, proto/postconf.proto,
+	proto/LMDB_README.html.
+
+20130929
+
+	Security violation: LMDB opens files with read/write access
+	for lock management purposes.  This gives unprivileged
+	daemon processes read/write file handles for root-owned
+	files under /etc/postfix.  This also breaks when a non-root
+	process needs to access a root-owned database.  Even if
+	LMDB lock files were world-writable, and kept in a dedicated
+	directory, they would still violate the principle of least
+	privilege. For all these reasons, support to create LMDB
+	files is removed from the postmap and postalias commands.
+	LMDB files can still be created by unprivileged Postfix
+	daemon processes under the postfix-owned data_directory.
+	Files: proto/LMDB_README.html, global/mkmap.c.
+
+20131001
+
+	Cleanup: LMDB support is forbidden due to problems with
+	LMDB lock management. These problems hinder error recovery
+	in multi-programmed systems, and prohibit database sharing
+	between privileged writer processes and unprivileged reader
+	processes.
+
+20131009
+
+	Documentation: inet_protols description was not updated
+	when smtp_address_preference was added. File: proto/postconf.proto
+
+20131013
+
+	Documentation: why postscreen(8) uses hash-table lookups
+	instead of direct pointers to find the DNSBL lookup result
+	for a specific session. File: postscreen/postscreen_early.c.
+
+20131022
+
+	Cleanup: add more &code; to postconf2man. Someone has been
+	writing documentation without checking the result, File:
+	mantools/postconf2man.
+
+	Documentation: in the discard(8) manpage, the reason is not
+	a host or domain name. File: discard/discard.c.
+
+20131025
+
+	Documentation: specify the expected result format with
+	"list" tables. File: proto/DATABASE_README.html.
+
+20131026
+
+	Future proofing: API changes in the PCRE library.  File:
+	util/dict_pcre.c.
+
+20131028
+
+	Feature: check_sasl_access to block hijacked logins.  Files:
+	mantools/postlink, proto/postconf.proto, global/mail_params.h,
+	smtpd/smtpd_check.c, smtpd/smtpd_dsn_fix.h.
+
+20131029-31
+
+	Cleanup: slmdb(3) simplified LMDB API that hides recoverable
+	LMDB errors from applications so that they can focus on
+	their own job. Files: util/slmdb.[hc].
+
+	Cleanup: LMDB functionality restored, after elimination of
+	1) world-writable lockfiles, 2) hard limits on the number
+	of concurrent readers, and 3) hard-coded database file inode
+	numbers in lockfiles that can prevent automatic crash
+	recovery.  Files: proto/LMDB_README.html, proto/postconf.proto,
+	mantools/postlink, util/dict_lmdb.c.
+
+20131101
+
+	Cleanup: restore ability to build without LMDB support;
+	further slmdb API streamlining. Files: util/slmdb.[hc],
+	util/dict_lmdb.c.
+
+	Bugfix: uninitialized variable. File: util/slmdb.c.
+
+	Documentation: added SASL_README example for check_sasl_access.
+	File: proto/SASL_README.html.
+
+20131102-3
+
+	Security violation: by default, LMDB 0.9.9 writes uninitialized
+	heap memory to a world-readable database file, as chunks
+	of up to 4096 bytes.  This is a huge memory disclosure
+	vulnerability: memory content that a program does not intend
+	to share ends up in a world-readable file.  The content of
+	uninitialized heap memory depends on program execution
+	history. That history includes code execution in other
+	libraries that are linked into the program.
+
+	This is a problem whenever the user who writes the database
+	file differs from the user who reads the database file. For
+	example, a privileged writer and an unprivileged reader.
+	In the case of Postfix, the postmap(1) and postalias(1)
+	commands would leak uninitialized heap memory, as chunks
+	of up to 4096 bytes, from a root-privileged process that
+	writes to a database file, to unprivileged processes that
+	read from that database file.
+
+	To work around this problem the postmap(1) and postalias(1)
+	commands disable the use of malloc() in LMDB. However, that
+	does not address several disclosures of stack memory.  Other
+	Postfix databases do not need this workaround: those databases
+	are maintained by Postfix daemon processes, and are accessible
+	only by the postfix user. File: util/dict_lmdb.c.
+
+20131102-3
+
+	Cleanup: expand TAB characters when generating documentation.
+	This was primarily an issue with non-HTML output, but it does
+	not hurt to do this also for HTML.  Files: proto/Makefile.in,
+	proto/MULTI_INSTANCE_README.html.
+
+20131104
+
+	Feature: ${queue_id} macro support for the pipe(8) delivery
+	agent by Andreas Schulze. File: pipe/pipe.c.
+
+20131107
+
+	Cleanup: after 16 years the SKIP() and TRIM() macros were
+	triggering compiler warnings.  Files: global/mail_params.c,
+	smtpstone/smtp-sink.c, util/mac_parse.c, util/split_nameval.c.
+
+20131110
+
+	Bugfix (introduced Oct 26 1997): don't clobber errno before
+	expanding %m. File: util/vbuf_print.c.
+
+20131114
+
+	Cleanup: LMDB >= 0.9.10 does not need the MDB_WRITEMAP
+	workaround to avoid heap memory information leaks.  File:
+	util/dict_lmdb.c.
+
+20131114
+
+	Cleanup: Coverity found a harmless memory leak in the
+	postconf master.cf parser.  Reported by Christos Zoulas,
+	NetBSD.  File: postconf/postconf_master.c.
+
+	Cleanup: graceful degradation after database open() error.
+	Several instances of that code introduced a harmless memory
+	leak, and Coverity complained about one of them (Christos
+	Zoulas, NetBSD).  Instead of adding random code in random
+	places, restructured dict_foo_open() routines with consistent
+	code to dispose of memory or file handles. Files: dict_thash.c,
+	dict_sockmap.c, dict_regexp.c, dict_pcre.c, dict_lmdb.c,
+	dict_dbm.c, dict_cidr.c, dict_cdb.c.
+
+	Cleanup: warning message after canonical/virtal/etc.
+	table lookup error. Files: cleanup/cleanup_addr.c,
+	cleanup/cleanup_map11.c, cleanup/cleanup_map1n.c,
+	cleanup/cleanup_masquerade.c, cleanup/cleanup_message.c,
+	cleanup/cleanup_milter.c.
+
+20131116
+
+	Feature: MySQL client support for option_file, option_group,
+	tls_cert_file, tls_key_file, tls_CAfile, tls_CApath,
+	tls_verify_cert. See mysql_table(5).  Code by Gareth Palmer.
+	Files: proto/mysql_table, global/dict_mysql.c.
+
+	Cleanup: DANE support. Keep the attributes of TA certificates
+	obtained via "IN TLSA 2 0 X" RRs, while continuing to only
+	use the key from "IN TLSA 2 1 X" RRs.  This means in the
+	"2 0 X" case that we re-sign the TA certificate in place,
+	rather than synthesize a vanilla cert around just the key.
+	Viktor Dukhovni. File: tls/tls_dane.c.
+
+	Bugfix: posttls-finger parsing of destination and optional
+	match values. Viktor Dukhovni.  File:
+	posttls-finger/posttls-finger.c.
+
+	Cleanup: When wrap_signed is false (OpenSSL 1.0.2 some day),
+	we don't have to sign trust anchors, and don't generate a
+	key to do so.  Thus don't attempt to re-sign trust-anchor
+	certificates (IN TLSA 2 0 X) in this case. Viktor Dukhovni.
+	File: tls/tls_dane.c.
+
+	Feature: configurable DANE digest algorithm priority. Use
+	only the most-preferred, shared, digest algorithm for any
+	give (usage, selector) combination. Viktor Dukhovni.
+	mantools/postlink, proto/postconf.proto, global/mail_params.h,
+	tls/tls_dane.c, tls/tls_misc.c.
+
+	Bugfix: FreeBSD nroff workaround messed up. File:
+	mantools/postlink.
+
+20131118
+
+	Cleanup: FreeBSD nroff workaround. Files: man/Makefile.in,
+	proto/Makefile.in.
+
+	Cleanup: the smtpd_proxy_filter client now sends QUIT before
+	closing the connection to a content filter.  Files:
+	smtpd/smtpd_proxy.c, smtpd/smtpd.c.
+
+	Portability: C99 va_copy() compatibility, in case some
+	implementation does not permit multiple va_start() calls
+	on the same argument list. Files: global/memcache_proto.c,
+	milter/milter8.c, smtpstone/smtp-source.c, util/attr_clnt.c,
+	util/concatenate.c, util/dict_surrogate.c, util/netstring.c,
+	util/compat_va_copy.h.
+
+	Cleanup: comment formatting. Viktor Dukhovni. File: dns/dns.h.
+
+	Cleanup: removed redundant sort operation. Viktor Dukhovni.
+	File: tls/tls_dane.c.
+
+20131119
+
+	Feature: a Postfix LMDB database can now be used as shared
+	persistent cache with multiple postscreen(8) or verify(8)
+	daemons (but not both), without the need for a shared
+	proxymap server.  Files: util/dict.h, util/dict_alloc.c,
+	util/dict_open.c, util/dict_lmdb.c.
+
+	Internal: DNS client support to report reply RCODE information,
+	in addition to the simplified DNS_NOTFOUND, DNS_RETRY etc.
+	Portability note: this requires the C99 __VA_ARGS__ feature.
+	Files: dns/dns.h. dns/dns_lookup.c, dns/test_dns_lookup.c.
+
+20131120
+
+	Cleanup: reduced the code footprint for the LMDB < 0.9.10
+	heap-to-file information leak workaround, and simplified
+	the implementation to "good enough". Files: util/dict.h,
+	util/dict.c, util/dict_lmdb.c, postalias/postalias.c,
+	postmap/postmap.c.
+
+	Cleanup: reduced the code footprint for the handling of
+	multi-writer safe maps. A map only needs to assert that it
+	is multi-writer safe, and the rest just happens.  Files:
+	util/dict.h, util/dict_open.c, util/dict_lmdb.c,
+	global/dict_memcache.c.
+
+	Cleanup: Postfix daemons no longer restart when a multi-writer
+	safe map is updated. File: util/dict.c.
+
+	Documentation: sharing an LMDB cache between multiple
+	verify(8) or postscreen(8) servers (but not both).  Files:
+	proto/ADDRESS_VERIFICATION_README.html,
+	proto/POSTSCREEN_README.html.
+
+	Cleanup: improve suppression of TLSA lookups in insecure
+	zones.  This is now applied not only to non-MX destinations,
+	but also to each MX record.  Viktor Dukhovni. Files:
+	src/posttls-finger/posttls-finger.c, src/smtp/smtp_tls_policy.c,
+	src/tls/tls.h, src/tls/tls_dane.c.
+
+	Workaround: increased the 5s connection timeout to 30s.
+	Viktor Dukhovni. File: posttls-finger/posttls-finger.c.
+
+20131121
+
+	Documentation: new socketmap_table(5) and lmdb_table(5)
+	manpages.  Files: mantools/postlink, conf/postfix-files,
+	html/Makefile.in, man/Makefile.in, proto/DATABASE_README.html,
+	postconf/postconf.c, proto/socketmap_table, proto/lmdb_table.
+
+20131122
+
+	Documentation: missing database hyperlinks, refined text
+	about partial lookup keys. Files: mantools/postlink,
+	proto/DATABASE_README.html, proto/lmdb_table,
+	proto/socketmap_table.
+
+20131123
+
+	Feature: support for NOTIFY parameter in the Milter
+	SMFIR_ADDRCPT_PAR request. Contributed by by Andrew Ayer.
+	Wietse added support for ORCPT.  Files: cleanup/cleanup.h,
+	cleanup/cleanup_milter.c, cleanup/cleanup_state.c,
+	global/xtext.c, global/xtext.h, milter/test-milter.c.
+
+20131122
+
+	Feature: "postconf -Fe service/type/attribute = value" edits
+	master.cf attribute values. The -e is optional. Example:
+	use "postconf -F "*/*/chroot = n" to turn off chroot on all
+	master.cf services. Files: postconf/postconf.h,
+	postconf/postconf.c, postconf/postcof_master.c,
+	postconf/postconf_edit.c.
+
+20131124
+
+	Cleanup: remove extra blank line from ccformat output,
+	making it compatible with the script that Wietse actually
+	uses (this line was part of a test to detect file truncation,
+	but it is now obsolete).  File: mantools/ccformat.
+
+	Feature: master.cf parameter namespace. "postconf -P" shows
+	master.cf parameter settings as "service/type/parameter =
+	value". This is applicable only to parameter settings in
+	master.cf. Files: postconf/postconf.h, postconf/postconf.c,
+	postconf/postcof_master.c, postconf/postconf_print.c.
+
+	Incompatibility: the master_service_disable syntax has
+	changed: use "service/type" instead of "service.type".  The
+	new form is consistent with master.cf parameter namespaces.
+	The old form is still supported to avoid breaking existing
+	configurations.  Files: global/master_service.c,
+	master/master_ent.c.
+
+20131125
+
+	Feature: change, add or delete "-o parameter=value" setting
+	in master.cf. Examples: "postconf -P smtp/inet/parameter=value"
+	(add or modify "-o name=value" setting) and "postconf -P
+	smtp/inet/parameter" (delete "-o parameter=value" setting).
+	Files: util/argv.[hc], postconf/postconf.h,
+	postconf/postconf_edit.c, postconf_master.c.
+
+20131126
+
+	Cleanup: Leave SSLv3 enabled with DANE. Viktor Dukhovni.
+	Files: proto/TLS_README.html proto/postconf.proto
+	tls/tls_client.c.
+
+	Cleanup: DANE support: Drop support for usage 0. It SHOULD
+	NOT be supported in DANE with SMTP, and we already don't
+	support digest TLSA RRs in this case, while full content
+	TLSA RRs are not recommended for DNS bloat reasons.  Viktor
+	Dukhovni. Files: proto/postconf.proto src/global/mail_params.h
+	src/smtp/smtp.c src/tls/tls_dane.c src/tls/tls_misc.c.
+
+	Feature: TLS support: Support future digest algorithms
+	without re-compilation. Viktor Dukhovni. Files: .indent.pro
+	proto/postconf.proto src/tls/tls_dane.c.
+
+	Feature: DNS support: New configurable digest agility.
+	Viktor Dukhovni. Files: .indent.pro proto/TLS_README.html
+	proto/postconf.proto src/global/mail_params.h src/tls/tls_dane.c
+	src/tls/tls_misc.c.
+
+20131127
+
+	Bugfix (introduced: 20090106): the postconf '-#' option
+	erased prior options. File: postconf/postconf.c.
+
+20131129
+
+	Bugfix: Makefile example in MULTI_INSTANCE_README. Viktor
+	Dukhovni. File: proto/MULTI_INSTANCE_README.html.
+
+20131130
+
+	Cleanup: simplify fingerprint security level implementation
+	in new DANE code.  Viktor Dukhovni.  Files: src/tls/tls.h
+	src/smtp/smtp_tls_policy.c src/tls/tls_dane.c
+	src/posttls-finger/posttls-finger.c.
+
+20131209
+
+	Cleanup: safe_strtoul() did not report an error for empty
+	or all-space input (the code to report this was in the wrong
+	place). This was not a problem as long as safe_strtoul()
+	was used only for output from safe_ultostr().  Files:
+	global/safe_ultostr.c, global/safe_ultostr.in,
+	global/safe_ultostr.ref.
+
+20131210
+
+	Documentation: updated description of SSL protocol controls.
+	In particular, enabled protocols are part of a contiguous
+	range. Viktor Dukhovni.  Files: proto/TLS_README.html,
+	proto/postconf.proto.
+
+	Bugfix: DANE support: handle OpenSSL memory allocation
+	error. Viktor Dukhovni.  File: tls/tls_dane.c.
+
+	Cleanup: LMDB_README was not installed. File: conf/postfix-files.
+
+20131214
+
+	Portability: on some platforms posttls-finger now requires
+	explicitly linking libdl.  File: posttls-finger/Makefile.in.
+
+	Cleanup: DANE support: extension gymnastics. Viktor Dukhovni.
+	File: tls/tls_dane.c.
+
+	Bugfix: DANE support: the wrap_cert() and wrap_key() calls
+	should never fail, but some callers ignored the return
+	value.  The only failure is for lack of memory, so we use
+	msg_fatal() internally and change wrap_cert() and wrap_key()
+	to return void. Viktor Dukhovni.  File: tls/tls_dane.c.
+
+	Bugfix: DANE support: avoid making DANE certificates with
+	replaced public-keys appear as if they were self-signed.
+	Viktor Dukhovni.  File: tls/tls_dane.c.
+
+	Cleanup: DANE support: simplify grow_chain() to always apply
+	trust consistently. Viktor Dukhovni.  File: tls/tls_dane.c.
+
+	Bugfix: DANE support: backport fixes from OpenSSL DANE
+	testing.  Discard errors generated by raw TA key signature
+	checks. Record the tadepth as zero with self-signed depth
+	0 TAs. Robustness: Though it should never happen, don't
+	update the tadepth if already set. Viktor Dukhovni.  Files:
+	tls/tls_dane.c, tls/tls_server.c.
+
+20131215
+
+	Cleanup: OpenSSL "const" declarations have changed over
+	time. Viktor Dukhovni. Files: src/tls/tls.h, src/tls/tls_client.c,
+	src/tls/tls_dane.c, src/tls/tls_server.c.
+
+20131216
+
+	Cleanup: TLS support. Eliminate calls of deprecated functions
+	before they are removed from OpenSSL.  CRYPTO_thread_id is
+	deprecated and we don't need it.  Replace the deprecated
+	ERR_remove_state() call with ERR_remove_thread_state(), and
+	use RSA_generate_key_ex().  Viktor Dukhovni. Files:
+	posttls-finger/posttls-finger.c, tls/tls_misc.c, tls/tls_rsa.c.
+
+	Cleanup: DANE support: Reduce #ifdef clutter to improve
+	redability and maintability. Viktor Dukhovni.  File:
+	tls/tls_dane.c.
+
+	Future proofing: Tolerate disappearance of named bug-workaround
+	bits without invalidating user configurations.  When support
+	for a bug workaround is removed from OpenSSL, the corresponding
+	bit is defined as zero (i.e. NOOP) intstead of causing
+	programs to break. Viktor Dukhovni.  File: tls/tls_misc.c.
+
+20131217
+
+	Portability: RSA_generate_key_ex() is not available on all
+	supported platforms, so this change is made conditional.
+	Enforce that this function will be used only for creating
+	a 512-bit ephemeral RSA key.  Viktor Dukhovni. File:
+	tls/tls_rsa.c.
+
+20131218
+
+	Documentation: new document FORWARD_SECRECY_README that
+	describes how different versions of Postfix >= 2.2 implement
+	"perfect" forward secrecy. Viktor Dukhovni. File:
+	proto/FORWARD_SECRECY_README.html, proto/Makefile.in,
+	conf/postfix-files, html/index.html.
+
+20131219
+
+	Cleanup: renamed postconf(1) internal identifiers according
+	to a consistent scheme, to avoid future name conflicts as
+	Postfix evolves. This is a no-feature change.  Files:
+	postconf/*.[hc], postconf/extract.awk.
+
+	Documentation: linearized the order of exposition in
+	FORWARD_SECRECY_README. File: proto/FORWARD_SECRECY_README.html.
+
+20131220
+
+	Bugfix: DANE support: segfault. Viktor Dukhovni. File:
+	tls/tls_dane.c.
+
+	Documentation: typo in SASL_README. Patrick Ben Koetter.
+	File: proto/SASL_README.html.
+
+	Documentation: increased the *.[0-9].html manpage width
+	from the historical 65 columns to the more contemporary 78
+	columns, and future-proofed the pattern that eliminates
+	redundant text from the "README FILES" section.  Files:
+	mantools/postlink, mantools/man2html, man/Makefile.in.
+
+	Documentation: misc manual page cleanups. Files:
+	postconf/postconf.c, postmulti/postmulti.c.
+
+20131221
+
+	Testbed: TLS support. Viktor Dukhovni. Files: tls/Makefile.in,
+	tls/tls_dane.c, tls/tls_dane.sh, tls/tls_mgr.c, .indent.pro.
+
+	Documentation: added section on how to verify that forward
+	secrecy works. File: proto/FORWARD_SECRECY_README.html.
+
+20131222
+
+	Documentation: forward secrecy, with feedback from Adam
+	Shostack.  Viktor Dukhovni and Wietse Venema. File:
+	proto/FORWARD_SECRECY_README.html.
+
+20131224
+
+	Feature: smtpd_sasl_service (until now, this was hard-coded
+	internally as "smtp"). On request by Michal (sksoft.cz).
+	Files: global/mail_params.h, proto/postconf.proto,
+	mantools/postlink, smtpd/smtpd.c, smtpd/smtpd_sasl_glue.c.
+
+	Documentation: updated example to Dovecot version 2 syntax.
+	File: proto/SASL_README/html.
+
+20131228
+
+	Cleanup: DANE support: test script. Viktor Dukhovni. File
+	tls/tls_dane.sh.
+
+	Debugging: test driver for LMDB debugging and stress testing.
+	Shockingly, LMDB terminates the postscreen daemon without
+	logfile record.  File: util/dict_cache.c.
+
+20140102
+
+	Bugfix: close the LMDB database cursor's read transaction
+	before writing with MDB_NOLOCK and before changing the
+	database memory map size. File: util/slmdb.c.
+
+20140103
+
+	Cleanup: eliminated data duplication from the new SMTP_ITERATOR
+	structure to the old SMTP_SESSION structure. The SMTP_ITERATOR
+	structure now maintains the sole copy. Files: smtp/smtp.h,
+	smtp_sasl_auth_cache.c, smtp_reuse.c, smtp_sasl_glue.c,
+	smtp_rcpt.c, smtp_session.c, smtp_chat.c, smtp_proto.c,
+	smtp_connect.c.
+
+20140104
+
+	Feature: support for optional configuration files
+	"$daemon-directory/postfix-files.d/*".  These are processed
+	in sorted order after "$daemon-directory/postfix-files",
+	This avoids breaking "postfix set-permissions" etc. when a
+	Postfix distribution comes in multiple packages.  File:
+	conf/post-install.
+
+20140107
+
+	Feature: LMDB 0.9.11 allows Postfix daemons to log an LMDB
+	error message, instead of falling out of the sky without
+	any notification.  Files: util/slmdb.[hc], util/dict_lmdb.c.
+
+20140108
+
+	Bugfix: every Postfix LMDB transaction is now protected by
+	an external lock for its entire life time. File: util/slmdb.c.
+
+20140109
+
+	Cleanup: turn off DNSSEC lookup after CNAME redirection to
+	an insecure zone. This is an optimization for resolvers
+	that do not automatically resolve CNAME chains. Viktor
+	Dukhovni. File: dns/dns_lookup.c.
+
+	Cleanup: do not salt the SMTP TLS policy lookup cache key
+	with the DNSSEC status. The DNSSEC status will not change
+	when the same nexthop/host pair is looked up repeatedly.
+	Viktor Dukhovni. File: smtp/smtp_tls_policy.c.
+
+	Robustness: Suppress TLSA lookups only when the qname zone
+	is insecure, not just because the rname zone is insecure.
+	This requires an extra T_CNAME lookup for the qname, since
+	nameservers are often "too helpful" and report CNAME records
+	together with the CNAME targets. When the targets are
+	insecure the whole reply is marked as insecure.  Viktor
+	Dukhovni.  File: tls/tls_dane.c.
+
+	Cleanup: Unify/simplify reporting of configuration or other
+	conditions that prevent DANE security.  Viktor Dukhovni.
+	Files: global/dsn_buf.[hc], tls/tls_dane.c, smtp/smtp_tls_policy.c.
+
+20140110-15
+
+	Miscellaneous documentation cleanups.
+
+20140116
+
+	Workaround: prepend "-I. -I../../include" to CCARGS, to
+	avoid name clashes with non-Postfix header files. File:
+	makedefs.
+
+20140125
+
+	Cleanup: assorted documentation glitches.
+
+20140209
+
+	Workaround: the Postfix SMTP client now also falls back to
+	plaintext when TLS fails after the TLS protocol handshake.
+	Files: smtp/smtp.h, smtp/smtp_connect.c, smtp/smtp_trouble.c.
+
+	Testbed: unsupported HANGUP access map action that drops
+	the connection without responding to the remote SMTP client.
+	File: smtpd/smtpd_check.c.
+
+20140214
+
+	Workaround: apparently some buggy kernels report WIFSTOPPED
+	events to the parent process (master daemon) instead of the
+	tracing process (e.g., gdb). File: master/master_spawn.c.
+
+20140218
+
+	Workaround: require that a queue file is older than
+	$minimal_backoff_time, before falling back from failed TLS
+	to plaintext (both during or after the TLS handshake).
+	Viktor Dukhovni. Files: smtp/smtp.h, smtp/smtp.c,
+	smtp/lmtp_params.c, smtp/smtp_params.c.
+
+20140220
+
+	Workaround: in case "minimal_backoff_time = $queue_run_delay".
+	Files: smtp/smtp.c, smtp/smtp_params.c, smtp/lmtp_params.c.
+
+	Cleanup: consolidate the code to log the start of a new
+	mail transaction in one place, so that code can easily be
+	added to log TLS status information in addition to the
+	existing client and SASL status information. Files:
+	smtpd/smtpd_sasl_proto.h, smtpd/smtpd_sasl_proto.c,
+	smtpd/smtpd.c.
+
+20140223
+
+	Workaround: when a session breaks after the TLS handshake,
+	do not fall back from TLS to plaintext when all recipients
+	were deferred or rejected during the TLS phase. Files:
+	smtp/smtp.h, smtp/smtp_rcpt.c.
+
+	Logging: the TLS client logged that an "Untrusted" TLS
+	connection was established instead of "Anonymous".  Viktor
+	Dukhovni. File: tls/tls_client.c.
+
+	Documentation: new self-signed certificate example and
+	updated private CA example. File: proto/TLS_README.html.
+
+20140224
+
+	Bugfix (introduced: 20061106): when the "retry" transport
+	was added to Postfix, it was not given special status like
+	the "error" transport. The Postfix SMTP server did not defer
+	mail that resolves to the "retry" transport, and the
+	trivial-rewrite daemon would override the null nexthop
+	destination in "retry:" with the current nexthop destination.
+	Files: smtpd/smtpd_check.c, trivial-rewrite/transport.c.
+
+20140227
+
+	Bugfix: Enforce TLS when TLSA records exist, but all are
+	unusable; Don't leak dane handle when all TLSA records are
+	unusable.  Viktor Dukhovni. File: smtp/smtp_tls_policy.c.
+
+	Cleanup: log TLS policy lookup errors as warnings. Viktor
+	Dukhovni.  File: smtp/smtp_connect.c.
+
+20140316
+
+	Feature: preliminary support to change arbitrary hard
+	delivery errors into soft errors and vice versa, or to
+	replace the descriptive text of non-delivery notifications.
+	This was originally introduced for sites that want to bounce
+	mail when no remote SMTP server announces TLS support. New
+	parameters: {default,smtp,pipe,virtual}_bounce_defer_filter.
+	Files: proto/postconf.proto, mantools/postlink, global/bounce.[hc],
+	bounce/defer.[hc], global/ndr_filter.[hc], global/mail_params.[hc],
+	master/event_server.c, master/multi_server.c,
+	master/single_server.c, master/trigger_server.c, smtp/smtp.c,
+	pipe/pipe.c, virtual/virtual.c.
+
+20140317
+
+	Feature: local_bounce_defer_filter support. Files:
+	global/bounce.[hc], global/defer.[hc], local/command.c,
+	local/file.c, local/bounce_workaround.c, local/local.c,
+	global/mail_params.h, mantools/postlink.
+
+20140318
+
+	Refinement: don't throttle an SMTP destination when the new
+	smtp_bounce_defer_filter feature turns a soft bounce into
+	a hard bounce.  File: smtp/smtp_trouble.c.
+
+20140320
+
+	Feature: support to replace successful delivery status code
+	and explanatory text.  This can be used to to hide local
+	details such as destination commands or file names when a
+	remote sender requests confirmation of delivery.  As of now
+	*_bounce_defer_filter is renamed into *_delivery_status_filter.
+	Files: global/bounce.c, global/bounce.h, global/defer.c,
+	global/defer.h, global/dsn_filter.c, global/dsn_filter.h,
+	global/mail_params.c, global/mail_params.h, global/sent.c,
+	local/local.c, master/event_server.c, master/multi_server.c,
+	master/single_server.c, master/trigger_server.c, pipe/pipe.c,
+	smtp/lmtp_params.c, smtp/smtp.c, smtp/smtp_params.c,
+	virtual/virtual.c, mantools/postlink.
+
+20140322
+
+	Cleanup: code comments and identifier names to reflect the
+	evolution from "NDR filter" to "delivery status filter".
+	Files: global/mail_params.h, smtp/smtp.c, global/dsn_filter.c,
+	global/dsn_filter.h, local/local.c, pipe/pipe.c,
+	smtp/lmtp_params.c, smtp/smtp_params.c, virtual/virtual.c,
+	global/bounce.c.
+
+20140323
+
+	Feature: initial merge of Debian-style dynamic linking.
+	Viktor Dukhovni.
+
+20140406
+
+	Bugfix: when testing session caching, stop reconnecting
+	after encountering a previously-used server (when the session
+	is re-used or not). Viktor Dukhovni. File:
+	posttls-finger/posttls-finger.c.
+
+	Feature: configurable TLS session-ticket cipher (default:
+	tls_session_ticket_cipher = aes-128-cbc). Viktor Dukhovni
+	and Wietse. Files: mantools/postlink, smtpd/smtpd.c,
+	proto/postconf.proto, global/mail_params.h, tls/tls_misc.c,
+	tls/tls_scache.h, tls/tls_server.c.
+
+20140416
+
+	Cleanup: replace "~0 << positive" with "~0U << positive"
+	even if we use only the lower bytes.  Jeffrey Walton.  File:
+	util/mask_addr.c.
+
+20140407
+
+	Documentation: the documentation for Postfix > 2.8 TLS
+	activity logging was incorrect. Loglevel 0 produces no
+	logging. Instead, information is logged only with loglevel
+	1 or higher. Viktor Dukhovni. Files: proto/TLS_README.html,
+	proto/postconf.proto.
+
+20140501
+
+	Cleanup: postscreen_dnsbl_timeout parameter. Files:
+	mantools/postlink, proto/postconf.proto, global/mail_params.h,
+	postscreen/postscreen.c, postscreen/postscreen_dnsbl.c.
+
+	Cleanup: added table search order information to the
+	postconf(5) manpage. File: proto/postconf.proto.
+
+20140505
+
+	Cleanup: added a client port attribute to the policy
+	delegation protocol. Jernej Porenta. File: smtpd/smtpd_check.c.
+
+20140507
+
+	Bugfix (introduced: Postfix 2.11): with connection caching
+	enabled (the default), recipients could be given to the
+	wrong mail server.  Root cause: due to an incorrect predicate,
+	the Postfix SMTP client could save and restore plaintext
+	connections that should not be cached, under nonsensical
+	lookup keys that did not distinguish by destination.  Problem
+	reported by Sahil Tandon, predicate error found by Viktor,
+	redundant connection restore request eliminated by Wietse.
+	File: smtp/smtp_connect.c.
+
+	Cleanup: the macros that control SMTP connection reuse
+	poorly reflected their purpose. "DEAD" is replaced with
+	"FORBIDDEN" (no I/O allowed) and "BAD" is replaced with
+	"THROTTLED" (anything that causes the queue manager to back
+	off from some destination). Files: smtp.h, smtp_connect.c,
+	smtp_proto.c, smtp_trouble.c.
+
+	Cleanup: enable SMTP connection cache lookup by destination
+	name while a surge of mail dries up. File: smtp_connect.c.
+
+20140505
+
+	Bugfix: the postdrop authorized_submit_users feature requires
+	that lookup table support is initialized so that it can use
+	libglobal or dynamicmaps maps.  File: postdrop/postdrop.c.
+
+	Cleanup: moved dynamicmaps initialization from parameter
+	inititialization (mail_conf_suck()) to dictionary initialization
+	(mail_dict_init()).  A benefit of this is that dynamicmaps.cf
+	is no longer read by programs that don't use Postfix lookup
+	tables.  Files: global/mail_conf.[hc], global/mail_dict.c.
+
+	Cleanup: move the mail_dict_init() call after the
+	mail_conf_read() or mail_params_init() call, to prepare for
+	a configurable dynamicmaps.cf directory.   Files:
+	master/event_server.c, master/multi_server.c,
+	master/single_server.c, master/trigger_server.c.
+
+20140506
+
+	Cleanup: you can now specify "make makefiles parameter=value"
+	for selected compile-time parameter default overrides.  The
+	old "make makefiles 'CCARGS=-DDEF_MUMBLE=\"mumble\"'"
+	approach remains supported.  File: makedefs.
+
+20140508
+
+	Cleanup: dynamicmaps.cf is now installed into $daemon_directory
+	because the file is shared among Postfix instances just
+	like postfix-files and other files.  Files: conf/dynamicmaps.cf,
+	Makefile.in, conf/postfix-files.
+
+	Cleanup: INSTALL is now plain ASCII instead of README format,
+	to avoid a chicken-and-egg problem (the instructions to
+	print/view README-format files are in the INSTALL file).
+
+	Documentation: updated INSTALL instructions and RELEASE_NOTES.
+
+20140512
+
+	Portability: Berkeley DB6 support. File: util/dict_db.c.
+
+20140514
+
+	Cleanup: replace #ifdef/endif containing hard-coded calls
+	of dynamicmaps functions with an extension mechanism that
+	dynamicmaps functions invoke instead. Files: util/dict.h,
+	util/dict_open.c, global/dynamicmaps.[hc], global/mkmap.h,
+	global/mkmap_open.c.
+
+20140515
+
+	Bugfix (introduced: 20140320): missing initialization.
+	Viktor Dukhovni. File pipe/pipe.c.
+
+	Cleanup: mkmap_open() now caches a dynamically-loaded
+	function. This is useful because postmap/postalias may open
+	the same database type multiple times. Files: global/mkmap.h,
+	global/mkmap_open.c.
+
+	Security: the dynamicmaps.cf file and its and shared-object
+	files must not be writable by non-root users. File:
+	global/dynamicmaps.c.
+
+20140517
+
+	Cleanup: dynamic linking and hooking. Files: util/dict.h,
+	util/load_lib.[hc], global/dynamicmaps.c.
+
+20140518
+
+	Preliminary "make plugins" support. Todo: macros to dynamically
+	remove pluggable maps from compile-time tables in dict_open.c
+	and mkmap_open.c, and from the OBJS lists in Makefile.in.
+
+20140522
+
+	Support for "make shared=yes" and "make dynamicmaps=yes".
+	New plugin_directory parameter for the location of the
+	dynamicmaps.cf file and for plugins with a relative pathname.
+	See RELEASE_NOTES and INSTALL for details. Files: postfix.c,
+	mail_params.[hc], dynamicmaps.c, mail_dict.c, makedefs,
+	postfix-files, dynamicmaps.cf, Makefile.in, util/Makefile.in,
+	global/Makefile.in, postlink, postconf.proto.  INSTALL.html,
+	RELEASE_NOTES.
+
+20140523
+
+	Cleanup: don't install plugins for unsupported databases,
+	and don't make dynamicmaps.cf entries for them. Files:
+	makedefs, Makefile.in, util/Makefile.in, global/Makefile.in.
+
+	Cleanup: added support for symlinks where the "source" is
+	specified as a relative pathname. File: postfix-install.
+
+	Cleanup: moved instructions from RELEASE_NOTES to INSTALL
+	to avoid duplication. Files: RELEASE_NOTES, proto/INSTALL.html.
+
+	Cleanup: include <dict_lmdb.h> unconditionally so that
+	dict_lmdb_map_size is always defined. Files: mail_params.c,
+	dict_test.c.
+
+	Cleanup: port for ancient Solaris9 revealed some non-portability.
+	Files: master/Makefile.in, makedefs, sys_defs.h.
+
+20140524
+
+	Cleanup: specify database library dependencies with variables
+	named AUXLIBS_CDB, AUXLIBS_LDAP, etc. The global AUXLIBS
+	variable is still supported, but the new variables are
+	required when building dynamically-loadable building database
+	plugins.  Files: RELEASE_NOTES, INSTALL.html, CDB_README.html,
+	LDAP_README.html, LMDB_README.html, MYSQL_README.html,
+	PCRE_README.html, PGSQL_README.html, SQLITE_README.html,
+	makedefs, util/Makefile.in, global/Makefile.in.
+
+	Workaround: reportedly, MacOS can fail to move a symlink
+	with a relative target across file system boundaries, because
+	it examines the symlink with stat() instead of lstat().
+	Files: makedefs, Makefile.in.
+
+	Cleanup: use readlink to verify symlink target. File:
+	postfix-install.
+
+20140528
+
+	Cleanup: the configuration file dynamicmaps.cf will now
+	automatically include files under the directory dynamicmaps.cf.d,
+	just like the configuration file postfix-files will
+	automatically include files under the directory postfix-files.d.
+	See INSTALL section "Building with Postfix shared libraries
+	and database plugins".  File: dynamicmaps.c.
+
+20140530
+
+	Cleanup: add shlib_directory and plugin_directory to the
+	postmulti-script list of shared parameters. Viktor Dukhovni.
+	File: postmulti-script.
+
+	Cleanup: to avoid "postfix set-permission" errors, don't
+	create postfix-files entries for non-existent database
+	plugins. Problem reported by Viktor. File: Makefile.in.
+
+	Bugfix: we can't use "mv" to replace a symlink-to-directory.
+	Instead we now create all symlinks in place. Unfortunately
+	the "ln -n" option is not universally implemented, so we
+	remove the old symlink first.  Problem reported by Viktor.
+	File: postfix-install.
+
+20140603
+
+	Cleanup: use the OpenSSL session id accessor (available
+	since OpenSSL 0.9.8 or so) instead of groping a session
+	object directly. Viktor Dukhovni. File: tls_server.c.
+
+20140605
+
+	Feature: the pipe(8) daemon logs some command output after
+	successful delivery as "dsn=2.0.0, status=sent (delivered
+	via XXX service (YYY))" where XXX is the master.cf service
+	name, and YYY is command output. Files: pipe/command.c,
+	pipe.c.
+
+20140613
+
+	Feature: the "pipeline" table implements a table pipeline.
+	Example "pipeline:!type_1:name_1!...!type_n:name_n".  The
+	ASCII character after "pipeline:" will be used as the
+	separator between the lookup tables that follow (do not use
+	space, ",", ":" or non-ASCII).  Each "pipeline:" query is
+	given to the first table.  Each lookup result becomes the
+	query for the next table in the pipeline, and the last table
+	produces the final result.  When any table lookup produces
+	no result, the pipeline produces no result.  Files:
+	dict_pipe.[hc], dict_open.c, postlink, DATABASE_README.html,
+	postconf.c.
+
+20140617
+
+	Feature: the "random" table performs random selection.
+	Example: "random:!result_1!...!result_n". Each table query
+	returns a random choice from the specified results. The
+	ASCII character after "random:" will be used as the separator
+	between the results that follow (do not use space, ",", ":"
+	or non-ASCII).  Files: dict_random.[hc], dict_open.c,
+	postlink, DATABASE_README.html, postconf.c.
+
+20140618
+
+	Cleanup: INFO action in access(5) tables, for consistency
+	with header/body_checks. Viktor Dukhovni.  Files:
+	smtpd/smtpd_check.c, proto/access.
+
+20140619
+
+	Cleanup: process LaMont Jones feedback for shared-library
+	and database-plugin builds. Changes: 1) move non-executable
+	files from $daemon_directory to the default $config_directory
+	(postfix-files*, dynamicmaps.cf*, main.cf.proto/master.cf.proto
+	for multi-instance support); 2) add foo.so -> foo.so.version
+	symlinks; 3) change $shlib_directory and $plugin_directory
+	defaults to /usr/lib/postfix to reduce sprawl.  Files:
+	conf/main.cf.proto, conf/master.cf.proto, conf/postfix-files.proto,
+	conf/post-install, conf/postmulti-script, makedefs,
+	postfix-install, proto/INSTALL.html, global/dynamicmaps.c,
+	global/dynamicmaps.h, global/mail_dict.c, global/mail_params.h,
+	postmulti/postmulti.c.
+
+	Bugfix (introduced: 2001): qmqpd null pointer bug when it
+	logs a lost connection while not in a mail transaction.
+	Reported by Michal Adamek. File: qmqpd/qmqpd.c.
+
+	Cleanup: filter non-printable characters in X509 subject
+	or issuer names. Viktor Dukhovni. File: tls/tls_server.c.
+
+20140620
+
+	Cleanup: for compliance with file system policies, some
+	files have been moved from $daemon-directory to the directory
+	specified with the new meta_directory parameter which has
+	the same default value as config_directory.  This change
+	affects non-executable files that are shared among multiple
+	Postfix instances, such as postfix-files, dynamicmaps.cf,
+	and multi-instance template files.
+
+	For backwards compatibility with Postfix 2.6..2.11, specify
+	"meta_directory = $daemon_directory" in main.cf before
+	installing Postfix, or specify "meta_directory = /path/name"
+	on the "make makefiles", "make install" or "make upgrade"
+	command line.
+
+	Files: Makefile.in, RELEASE_NOTES, conf/post-install,
+	conf/postfix-files.proto, conf/postmulti-script, makedefs,
+	mantools/postlink, postfix-install, proto/INSTALL.html,
+	proto/postconf.proto, global/mail_params.c, global/mail_params.h,
+	postfix/postfix.c, postmulti/postmulti.c.
+
+	Feature: check_xxx_a_access (for xxx in client, reverse_client,
+	helo, sender, recipient) implements access control on all
+	A and AAAA IP addresses for the client hostname, helo
+	parameter, sender domain or recipient domain. Some spam has
+	sender domains with the same IP address but different MX
+	hosts.  Files: global/mail_params.h, smtpd/smtpd_check.c,
+	proto/postconf.proto.
+
+20140622
+
+	Cleanup: eliminated plugin_directory to reduce configuration
+	parameter sprawl. Files: Makefile.in, RELEASE_NOTES,
+	conf/post-install, conf/postfix-files.proto, conf/postfix-script,
+	conf/postmulti-script, makedefs, mantools/postlink,
+	postfix-install, proto/INSTALL.html, proto/postconf.proto,
+	global/Makefile.in, global/mail_dict.c, global/mail_params.c,
+	global/mail_params.h, global/mail_version.h, postfix/postfix.c,
+	postmulti/postmulti.c, smtpd/smtpd_check.c, util/Makefile.in.
+
+20140623
+
+	Cleanup: eliminated the use of Postfix release versions as
+	file name suffixes for shared libraries, database plugins
+	and dynamicmaps.cf.  The shared-library version suffixes
+	were fighting against assumptions and conventions in run-time
+	linkers, including the assumption that ABIs are preserved
+	from one version to the next. The Postfix version can now
+	be embedded in the shlib_directory parameter. As this is
+	sufficient to permit upgrade of a running Postfix system
+	without risking that old binaries will link against newer
+	shared objects, we no longer need a version suffix for
+	dynamicmaps.cf.  Files: Makefile.in, RELEASE_NOTES,
+	conf/postfix-files.proto, makedefs, proto/INSTALL.html,
+	proto/postconf.proto, global/mail_params.h, global/mail_version.h,
+
+20140624
+
+	Cleanup: the commands "make (makefiles|install|upgrade|package)
+	parameter=value" now replace the string MAIL_VERSION in a
+	configuration parameter value with the Postfix release
+	version.  Unfortunately, the more obvious approach, a
+	parameter value with the unexpanded '$mail_version', produces
+	inconsistent results with different make implementations.
+	Files: makedefs, Makefile.in, postfix-install, proto/INSTALL.html,
+	proto/PACKAGE_README.html
+
+	Cleanup: postmulti now requires "postmulti -e init" before
+	accepting other multi-instance requests.  Viktor Dukhovni.
+	File: conf/postmulti-script.
+
+20140625
+
+	Kludge: moved dict_db_cache_size away from dict_db.c in
+	preparation for Berkeley DB database plugin support (a
+	similar kludge was implemented for LMDB).  Files:
+	util/dict_db.[hc], util/dict_test.c, global/mail_params.c.
+
+	Cleanup: don't leak build directory information via SHLIB_ENV
+	in makedefs.out.  Files: Makefile.in, conf/postfix-files.
+
+20140626
+
+	Cleanup: construction debris. Files: Makefile.in,
+	conf/postfix-script.
+
+	Cleanup: replace the result of MAIL_VERSION expansion with
+	$mail_version in main.cf installation parameter settings,
+	to permit safe upgrade of a running mail system. File:
+	postfix-install.
+
+	Cleanup: replace the result of MAIL_VERSION expansion with
+	$mail_version in built-in default installation parameter
+	settings, for consistency with main.cf. File: makedefs,
+	postfix-install, conf/post-install.
+
+	Cleanup: removed $mail_version from the default shlib_directory
+	value. Files: global/mail_params.h, proto/INSTALL.html.
+
+	Cleanup: in postfix-script, use find instead of ls to
+	determine permissions or ownership, and group some checks
+	with "pathname/." and "pathname/*" into one.  Downside:
+	more warnings will now have "/./" in the middle of a pathname.
+	File: conf/postfix-script.
+
+	Cleanup: need to evaluate mail_version before evaluating
+	parameters that may contain $mail_version. File:
+	global/mail_params.c.
+
+	Cleanup: the postmulti command now exercises the postconf
+	"-x" option to expand $parameter_name in secondary-instance
+	parameter values.  File: postmulti/postmulti.c.
+
+	Cleanup: post-install also needed to replace the result of
+	MAIL_VERSION expansion with $mail_version, for the same
+	reasons as postfix-script. Viktor Dukhovni. File:
+	conf/post-install.
+
+20140627
+
+	Bugfix (introduced: 20140626) broken build and broken install
+	with default shlib_directory. Files: makedefs.
+
+	Bugfix (introduced: 20140627) "make install" stopped with
+	a bogus error when there was no real "make install name=value"
+	parameter override.  Files: conf/post-install.
+
+	Cleanup: support MAIL_VERSION magic (see INSTALL) only at
+	the end of a parameter value. Files: proto/INSTALL.html
+	makedefs, postfix-install, conf/postfix-files.
+
+	Cleanup: use ${mail_version} as the MAIL_VERSION-unexpanded
+	form.  Viktor Dukhovni. Files: makedefs, postfix-install,
+	conf/postfix-files.
+
+20140630
+
+	Cleanup: the pipeline and random lookup tables are now
+	called pipemap and randmap, respectively. These names are
+	more specific. The old names remain available, at least
+	temporarily.  Files: util/dict_pipe.[hc], util/dict_random.[hc],
+	postconf/postconf.c, mantools/postlink, proto/DATABASE_README.html.
+
+	Feature: smtpd_policy_service_request_limit to limit the
+	number of requests per Postfix SMTP server policy connection.
+	This is a workaround to avoid error-recovery delays with
+	policy servers that cannot maintain a persistent connection.
+	Based on code by Markus Benning. Files: global/mail_params.h,
+	mantools/postlink, proto/SMTPD_POLICY_README.html,
+	proto/postconf.proto, smtpd/smtpd.c, smtpd/smtpd_check.c,
+	util/attr_clnt.[hc].
+
+20140701
+
+	Cleanup: documented how Postfix maintains dictionary
+	provenance. Provenance matters: for example, the owner UID
+	of an aliases(5) database file determines the execution
+	privileges for delivery to |command or /file/name.  Refined
+	the algorithm that computes the provenance of a pipemap,
+	based on the provenance of its constituent lookup tables.
+	Files: util/dict.[hc], util/dict_pipe.c.
+
+	Cleanup: made mail_spool_directory configurable with "make
+	makefiles mail_spool_directory=/path/name".  This allows
+	Postfix to be built without any pathnames that reference
+	system directories. This is useful for testing and sandboxing.
+	Files: global/mail_params.h, makedefs.
+
+	Cleanup: configurable attr_clnt(3) retry strategy (try limit
+	and retry delay).  Files: util/attr_clnt.[hc].
+
+	Feature: control over SMTPD policy lookup error handling:
+	smtpd_policy_service_try_limit, smtpd_policy_service_retry_delay,
+	smtpd_policy_service_default_action determine how many times
+	to try to send a policy request before giving up, the delay
+	before resending a failed policy request, and a default
+	action when giving up. The defaults are backwards-compatible.
+	Files: global/mail_params.h, mantools/postlink,
+	proto/postconf.proto, smtpd/smtpd.c, smtpd/smtpd_check.c.
+
+20140709
+
+	Cleanup: bitrot in unused function. File: global/defer.c.
+
+	Cleanup: add SYSLIBS minus static libraries while building
+	Postfix shared-library objects. Files: makedefs, util/Makefile.in,
+	global/Makefile.in, dns/Makefile.in, master/Makefile.in/.
+
+20140708
+
+	Bugfix (introduced 20140701): did not restore jumpbuf while
+	evaluatingsmtpd_policy_service_default_action.  Viktor
+	Dukhovni. File: smtpd/smtpd_check.c.
+
+	Feature: VERY PRELIMINARY support for SMTPUTF8 based on an
+	initial implementation by Arnt Gulbrandsen, funded by CNNIC.
+	This implements the syntax of SMTP commands and DSN delivery
+	status notifications. It does not address the problem that
+	the same domain name may show up in different forms: an
+	UTF8-encoded name with non-ASCII charaters, or an IDNA-encoded
+	(xn--mumble) name with ASCII-only characters. This means
+	that access policies, mydestination, virtual_*_domains and
+	relay_domans will have to understand both forms in order
+	to provide complete coverage.  For now, SMTPUTF8 support
+	must not be enabled except for testing.
+
+20140710
+
+	Portability: add '-Wl,--enable-new-dtags' to the linker
+	command line with building with Postfix shared libraries
+	on Linux. Viktor Dukhovni. file: makedefs.
+
+20140711
+
+	Background: What is SMTPUTF8 autodetection? Postfix cannot
+	rely solely on the sender's declaration that a message
+	requires SMTPUTF8 support, because UTF8 may be introduced
+	during local processing (for example, the client hostname
+	in Postfix's Received: header, adding @$myorigin or .$mydomain
+	to an incomplete address, address rewriting, alias expansion,
+	automatic BCC recipients, local forwarding, and modifications
+	made by header checks or Milter applications).  This means
+	that some form of autodetection is needed that a message
+	requires SMTPUTF8 support.
+
+	Cleanup: don't try to distinguish between UTF that is already
+	present in a message or envelope, and UTF8 that is introduced
+	during local processing (see above).  Maintaining this
+	distinction is too problematic.
+
+	Cleanup: mailing list friendliness. Allow delivery of
+	SMTPUTF8 mail to non-SMTPUTF8 servers when a message has
+	no UTF8 headers, no UTF8 envelope sender, and when the
+	specific delivery request contains no UTF8 envelope recipient.
+	This is needed for mailing lists that may have a mix of
+	UTF8 and non-UTF8 subscriber addresses. File: global/smtputf8.h,
+	smtp/smtp_proto.c.
+
+	Cleanup: moved all SMTPUTF8 detection to the cleanup server,
+	so that it can apply equally to sendmail command-line
+	submission, forwarded mail, postmaster notifications,
+	delivery status notifications, mail received with the qmqpd
+	server, address verification probes, as well as UTF8
+	introduced during local processing (see above).  Files:
+	cleanup/cleanup_out.c, cleanup/cleanup_addr.c.
+
+	Cleanup: store the SMTPUTF8 message (i.e. non-recipient)
+	flags in the first queue file record, so that the queue
+	manager can find the information without having to read
+	every queue file record.  Files: cleanup/cleanup_final.c,
+	*qmgr/qmgr_message.c.
+
+20140713
+
+	Interoperability: new parameter smtputf8_autodetect_classes
+	for selective autodetection that a message requires UTF8SMTP
+	support. During the initial SMTPUTF8 rollout, this is limited
+	by default to Postfix sendmail command-line submissions and
+	address verification probes.  Sites that introduce UTF8
+	during local processing (see above) will have to enable
+	SMTPUTF8 autodetection for all mail sources. This feature
+	shares infrastructure with the older internal_filter_classes
+	feature.  Files: bounce/bounce_notify_service.c,
+	bounce/bounce_notify_verp.c, bounce/bounce_one_service.c,
+	bounce/bounce_trace_service.c, bounce/bounce_warn_service.c,
+	global/int_filt.c, global/mail_proto.h, global/smtputf8.c,
+	local/forward.c, pickup/pickup.c, qmqpd/qmqpd.c, smtp/smtp_chat.c,
+	smtpd/smtpd.c, smtpd/smtpd_chat.c, verify/verify.c.
+
+	Feature: preliminary message/global support. This does not
+	yet parse encoded message/global (such as message/global
+	sent through an non-8BITMIME system). Such mail cannot yet
+	be inspected with header_checks. File: global/mime_state.c.
+
+20140714
+
+	Cleanup: update the "smtputf8" delivery request flags when
+	VERP expansion causes an UTF8 recipient address to appear
+	in the envelope sender address.  Files: *qmgr/qmgr_deliver.c.
+
+	Cleanup: emit the correct content transfer encoding name
+	when downgrading message/global as quoted-printable. File:
+	global/mime_state.c.
+
+	Cleanup: generate a bounce message with MIME type *global*
+	only when the original message requested SMTPUTF8 support.
+	File: bounce/bounce_notify_util.c.
+
+	Cleanup: propagate the "SMTPUTF8 support requested" flag
+	when bouncing a message or when forwarding a message through
+	a local alias or .forward file.  Files: local/forward.c,
+	bounce/bounce_notify_util.c, src/global/post_mail.[hc], and
+	specify a dummy argument SMTPUTF8_FLAGS_NONE in all other
+	programs that programs that invoke post_mail_fopen*(),
+
+20140715
+
+	Cleanup: change extract_addr() API to indicate that an
+	address is parsed in SMTPUTF8 context. File: smtpd/smtpd.c.
+
+	Cleanup: shared-library build fixes. Viktor Dukhovni.  Files:
+	makedefs, dns/Makefile.in, global/Makefile.in, master/Makefile.in,
+	tls/Makefile.in, util/Makefile.in.
+
+	First general release with SMTPUTF8 support; see RELEASE_NOTES
+	for an initial writeup.  The last pre-SMTPUTF8 release is
+	snapshot 20140713.
+
+20140716
+
+	Paranoia: validate UTF8 before exposing it to libicuuc.
+	File: util/midna.c.
+
+	Typo: Postfix did not warn when smtputf8_enable=yes while
+	UTF-8 support is not compiled in. File: global/mail_params.c.
+
+	Cleanup: hard-coded GCC dependencies. Eray Aslan. File:
+	makedefs.
+
+20140717
+
+	Safety: manipulate unsigned characters while decoding.
+	Files: global/xtext.c, global/uxtext.c.
+
+	Infrastructure: ACE label to UTF-8 conversion. Files:
+	util/midna.[hc].
+
+	Infrastructure: macro expansion with printable() filter.
+	Files: util/mac_expand.[hc].
+
+	Feature: when expanding myhostname or mydomain in bounce
+	template messages, and smtputf8_enable=yes, convert ACE
+	(xn--mumble) labels into UTF-8.  bounce/bounce_template.c.
+
+20140720
+
+	Cleanup: charset selection and content-transfer encoding
+	in bounce messages (work in progress). The proper solution
+	requires separate handling of the returned-message MIME
+	properties and of the (boiler-plate text, delivery status)
+	MIME properties.  File: bounce/bounce_notify_util.c.
+
+20140722
+
+	Documentation: the TLS_README example for creating a
+	self-signed certificate was incomplete. Also, added
+	"smtp_tls_loglevel = 1" and "smtpd_tls_loglevel = 1" settings
+	to cookbook recipes, so that TLS handshake results will be
+	logged. Viktor Dukhovni.  File: proto/TLS_README.html.
+
+	Documentation: update Perl MIME::Base64 example.  File:
+	proto/SASL_README.html.
+
+	Documentation: update pointer to Bennett Todd's SMTP proxy.
+	File: proto/SMTPD_PROXY_README.html.
+
+20140725
+
+	Documentation: describe what features are controlled by
+	parent_domain_matches_subdomains, both in the description
+	of the controlled feature, and in the description of
+	parent_domain_matches_subdomains. File: proto/postconf.proto.
+
+	Cleanup: smtpd_client_event_limit_exceptions is now controlled
+	with parent_domain_matches_subdomains, with backwards-compatible
+	default (specify .example.com in order to match subdomains
+	of example.com). Files: smtpd/smtpd.c.
+
+	Documentation: SMTPUTF8_README, an updated version of text
+	that was originally part of the RELEASE_NOTES file. Files:
+	proto/SMTPUTF8_README.html, proto/Makefile.in, html/index.html.
+
+20140731
+
+	Feature: the Postfix SMTP server now logs at the end of a
+	session how many times each SMTP command was successfully
+	invoked, followed by the total number of invocations if it
+	is different.  File: smtpd/smtpd.c.
+
+20140802
+
+	Workaround: detect mis-configuration where Postfix talks
+	to the Dovecot master socket instead of the Dovecot userdb
+	socket. Timo Sirainen. File: xsasl/xsasl_dovecot_server.c.
+
+20140904
+
+	Logging: the MySQL client now logs a warning when a match
+	against the "domain" list fails due to table lookup error
+	(the underlying mechanism already logs a warning, but it
+	has less context information).  File: global/dict_mysql.c.
+
+20140907
+
+	Feature: with "confirm_delay_cleared = yes", Postfix informs
+	the sender when delayed mail leaves the queue. This can
+	result in a sudden burst of notifications at the end of a
+	prolonged network outage, and is therefore disabled by
+	default. Files: mantools/postlink, proto/postconf.proto,
+	global/deliver_request.h, global/mail_params.h, global/sent.c,
+	*qmgr/qmgr.c, *qmgr/qmgr_active.c, *qmgr/qmgr_message.c.
+
+20140908-14
+
+	Feature: for the first time in 17 years, support for
+	${name?if-nonempty:if-empty} macro expressions, and for
+	logical expressions ${logical-expr?if-true:if-false}. In
+	preparation for configurable message headers and logging.
+	Files: util/mac_expand.c.
+
+20140914
+
+	Bugfix (introduced: 19971026): a zero precision value in
+	%.*s and $.<digits>s was implemented as if no precision
+	value was specified, i.e. print the entire string. This was
+	not harmful, it just looked weird.  File: util/vbuf_print.c.
+
+20140917
+
+	Feature: RFC 7372 enhanced status code for unknown SMTP
+	client hostnames.  File: smtpd/smtpd_check.c
+
+	Bugfix: the accept() calls in test progams escaped attention
+	when Postfix 2.2 was ported to IPv6. Problem found by Mark
+	Martinec. Files: smtpstone/smtp-sink.c, smtpstone/qmqp-sink.c.
+
+20140918
+
+	Cleanup: log a warning when the cleanup server detects too
+	many hops. smtpd(8) does not log any of the CLEANUP_STAT_XXX
+	results. The pickup server logs some because there is no
+	client to send the problem description to. This logic of
+	who logs what needs to be revisited. File:
+	cleanup/cleanup_message.c.
+
+20140919
+
+	Usability: randmap and pipemap syntax, for example,
+	pipemap:{type_1:name_1, ..., type_n:name_n}.  This required
+	small updates to code that parses input into lookup table
+	names. Files: global/data_redirect.c, global/maps.c,
+	global/server_acl.c, postconf/postconf.c, postconf/postconf_dbms.c,
+	postconf/test58.ref, proto/DATABASE_README.html,
+	proxymap/proxymap.c, smtpd/smtpd_check.c, util/argv.h,
+	util/balpar.c, util/dict_pipe.c, util/dict_random.c,
+	util/match_list.c, util/mystrtok.c, util/argv_splitq.c,
+	util/stringops.h.
+
+	Cleanup: added PRINTFLIKE() to enable missing format string
+	checks. Files: bounce/bounce_template.h, global/memcache_proto.h,
+	global/dict_memcache, postconf/postconf.h, util/dict.h,
+	util/msg.h.
+
+20140920
+
+	Bugfix (introduced: 20080212): incorrect client name in
+	reject messages from check_reverse_client_hostname_access
+	and check_reverse_client_hostname_{a,mx,ns}_access.  They
+	replied with the verified client name, instead of the name
+	that was rejected.  Problem reported by Reindl Harald. File:
+	smtpd/smtpd_check.c.
+
+20140921
+
+	Cleanup: postconf code to determine the default mydomain
+	value had not evolved since 1997, while the rest of Postfix
+	changed in 2000.  File: postconf/postconf-dbms.c.
+
+20140922
+
+	Cleanup: the confirm_delay_cleared feature now sends no
+	notification when the sender requests NOTIFY options that
+	do not include NOTIFY=DELAY. Files: global/deliver_request,h,
+	global/sent.c, *qmgr/qmgr_active.c, *qmgr/qmgr_message.c.
+
+	Bugfix (introduced: yesterday): missing print arguments.
+	File: postconf/postconf_dbms.c.
+
+	Cleanup: simplified "nested" lookup table checks.
+
+	Cleanup: replace stress-dependent main.cf defaults with the
+	ternary form: "${stress?{x}:{y}}" File: global/mail_params.h,
+	proto/postconf.proto, postscreen/postscreen.c (comments).
+
+20140923
+
+	Cleanup: dict_db and dict_lmdb global settings. Files:
+	global/mail_params.c, util/dict_open.c.
+
+	Feature: unionmap, based on contribution by Roel van Meer.
+	Files: mantools/postlink, postconf/postconf.c (manpage),
+	proto/DATABASE_README.html, util/dict_open.c, util/dict_union.[hc].
+
+20140924
+
+	Bugfix (introduced: 20060117): the escape function didn't
+	correctly convert non-ASCII. File: util/unescape.c.
+
+	Bugfix (introduced: 201407): missing conversions for non-ASCII
+	domain names in permit_mx_backup, check_mumble_{a,mx,ns}_access
+	and reject_unknown_{sender,recipient}_domain. Mark Martinec.
+	File: smtpd/smtpd_check.c.
+
+20140925
+
+	Cleanup: support for per-Milter settings, for example:
+	smtpd_milters = {inet:host:port, default_action=accept,
+	...}.  Specify the Milter endpoint address followed by zero
+	or more attribute=value pairs separated by comma or space.
+	The supported attributes are command_timeout, connect_timeout,
+	content_timeout, default_action, and protocol. These have
+	the same names as the corresponding main.cf parameters,
+	minus the "milter_" prefix.  Files: global/mail_conf_over.c,
+	global/mail_conf_str.c, global/mail_conf_time.c,
+	global/mail_conf.h, milter/milters.c.
+
+20140927
+
+	Cleanup: specify { name = value } in per-Milter settings,
+	to support space around the "=" or comma/space within the
+	value. Files: global/attr_over.[hc].
+
+	Cleanup: "postconf -n" now only shows config_directory when
+	an override is in effect (environment, -c or -o).
+
+	Cleanup: support for master.cf arguments inside {}, to
+	protect arguments that contain whitespace. File:
+	master/master_ent.c, postconf/postconf_master.c,
+	postconf/test59.ref.
+
+	Cleanup: support for per-policy client settings, for example:
+	check_policy_service {inet:host:port, default_action=dunno,
+	timeout=50s, ...}. Specify the policy server endpoint address
+	followed by zero or more attribute=value pairs separated
+	by comma or space.  Specify { name = value } for attributes
+	that contain whitespace; otherwise, space is not allowed
+	around the "=".  The supported attributes are default_action,
+	max_idle, max_ttl, request_limit, retry_delay, timeout, and
+	try_limit. These have the same names as the corresponding
+	main.cf parameters, minus the "smtpd_policy_service_" prefix.
+	Files: global/mail_conf_int.c, global/mail_conf.h,
+	global/attr_override.[hc], smtpd/smtpd_check.c.
+
+20140928
+
+	Cleanup: extpar.c module to reduce code duplication.  Files:
+	global/attr_override.c, master/master_ent.c, milter/milter.c,
+	postconf/postconf_dbms.c, postconf/postconf_master.c,
+	smtpd/smtpd_check.c, util/extpar.c, util/stringops.h.
+
+	Cleanup: the table-driven code for per-Milter and per-policy
+	overrides now updates stack-based variables, instead of
+	(ugh) statically-allocated variables. Files:
+	global/attr_override.[hc], smtpd/smtpd_check.c, milter/milter.c.
+
+	Documentation: added advanced configuration sections for
+	how to use per-Milter and per-policy settings.  Files:
+	proto/SMTPD_POLICY_README.html, proto/MILTER_README.html.
+
+	Cleanup: force LANG=C to prevent groff from outputting
+	non-ASCII cruft into the HTML-ized manpages.  Files:
+	html/Makefile.in, proto/Makefile.in, many HTML output files.
+
+20140929
+
+	Cleanup: the table-driven code for per-Milter and per-policy
+	overrides now updates arbitrary variables, so that it can
+	also be used for, say, TLS policies. Files:
+	global/attr_override.[hc], smtpd/smtpd_check.c, milter/milter.c.
+
+	Documentation: support for "{ argument with whitespace }"
+	in master(5) and pipe(8). Files: proto/master, src/pipe/pipe.c.
+
+	Documentation: in ADDRES_VERIFY_README, replaced "nearest
+	MTA" with "preferred MTA". The SMTP client was changed years
+	ago to try alternate MXes after a 4XX SMTP server response.
+	File: proto/ADDRES_VERIFY_README.html.
+
+20141001
+
+	Safety: backwards-compatibility safety net that forces
+	Postfix to run with backwards-compatible default settings
+	after an upgrade to a newer Postfix version.  Postfix logs
+	all uses of those backwards-compatible default settings so
+	that the system administator can determine whether or not
+	some backwards-compatible default settings need to be made
+	permanent in main.cf or master.cf.  All this is controlled
+	with a new compatibility_level parameter, default value 0.
+	Files: global/mail_params.[hc], trivial-rewrite/rewrite.c,
+	master/master_ent.c, smtpd/smtpd.c, postfix/postfix.c.
+
+	New defaults for master.cf chroot (n), append_dot_mydomain
+	(no) and smtputf8_enable (yes). File: global/mail_params.h,
+	global/mail_params.c, smtp/smtp.c (manpage), smtpd/smtpd.c
+	(manpage), trivial-rewrite/trivial-rewrite.c.
+
+	Simple relational expression evaluator so that main.cf
+	defaults can be made dependent on comparisons with the
+	compatibility_level parameter value. File: util/mac_expand.c.
+
+	Bugfix: do not reset the mail transaction after receiving
+	a non-ASCII recipient. File: smtpd/smtpd.c.
+
+20141002
+
+	Cleanup: moved the details of BC safety-net messages from
+	RELEASE_NOTES to postconf(5) manpage, and changed the wording
+	of the BC messages. Files: RELEASE_NOTES, proto/postconf.proto,
+	master/master_ent.c, smtpd/smtpd.c, trivial-rewrite/rewrite.c.
+
+20141003
+
+	Workaround: kludge for multiple paragraphs of text in
+	indented paragraphs.  Files: mantools/postconf2html,
+	mantools/postconf2man, proto/Makefile.in, proto/postconf.proto
+
+20141005
+
+	Cleanup: CHARSET_COMMA_SP, CHARSET_SPACE and CHARSET_BRACE
+	to prepare for the elimination of ad-hoc string constants.
+	File: util/sys_defs.h.
+
+	Cleanup: allow "{ name=value }" to protect whitespace in
+	import_environment and export_environment. Files:
+	proto/postconf.proto, global/mail_parm_split.c, global
+	/mail_parm_split.h, global/mail_stream.c, local/command.c,
+	master/master.c, pipe/pipe.c, postdrop/postdrop.c,
+	postfix/postfix.c, postmulti/postmulti.c, postqueue/postqueue.c,
+	spawn/spawn.c.
+
+20141006
+
+	Backwards compatibility: log a helpful message when "localhost"
+	is missing from mydestination. Files: trivial_rewrite/rewrite.c,
+	trivial_rewrite/resolve.c, trivial-rewrite/trivial-rewrite.h,
+	proto/postconf.proto.
+
+	Cleanup: message_drop_header for configurable header dropping
+	(default: bcc, content-length, resent-bcc, return-path).
+	The list of supported header names covers RFC 5321, 5322,
+	MIME RFCs, and some historical names.  File: global/header_opts.c,
+	global/mail_params.[hc], cleanup/cleanup.c (manpage),
+	proto/postconf.proto, mantools/postlink.
+
+20141008
+
+	New defaults: "relayhost=" and "mynetworks_style = host",
+	plus a backwards-compatibility safety net that warns when
+	the change in defaults could result in rejection of mail
+	(with mynetworks_style this requires that Postfix evaluates
+	both old and new default values).  Files: proto/postconf.proto,
+	global/flush_clnt.c, global/mail_params.c, global/mail_params.h,
+	global/mynetworks.c, global/mynetworks.h, global/server_acl.c,
+	postconf/postconf_builtin.c, smtpd/smtpd.c, smtpd/smtpd_check.c.
+
+20141009
+
+	Documentation: moved the gory details from postconf(5) to
+	a new COMPATIBILITY_README document. Files: proto/postconf.proto,
+	proto/COMPATIBILITY_README.html html/index.html.
+
+	Documentation: update the conf/main.cf compatibility_level
+	setting for new Postfix installs, and updated a reminder
+	in mail_params.h.
+
+20141010
+
+	Cleanup: make "const char myname[]" declarations static.
+	global/attr_override.c, global/bounce.c, global/dsn_filter.c,
+	global/dynamicmaps.c, global/mkmap_open.c, global/smtputf8.c,
+	smtp/smtp_key.c, smtpd/smtpd_check.c, util/dict_pipe.c,
+	util/dict_union.c, util/mac_expand.c, util/midna.c,
+	util/valid_utf8_hostname.c.
+
+	Documentation: summarize the user-specified "make makefiles"
+	settings at the top of makedefs.out. This file now has so
+	many internal variables that people would get lost.
+
+20141011
+
+	Cleanup: replaced cryptic macros X_SMTP() and SMTP_X() with
+	more descripive names: LMTP_SMTP_SUFFIX() and VAR_LMTP_SMTP().
+	Files: smtp/smtp.c, smtp/smtp.h, smtp/smtp_chat.c,
+	smtp/smtp_connect.c, smtp/smtp_proto.c, smtp/smtp_sasl_glue.c,
+	smtp/smtp_sasl_proto.c, smtp/smtp_tls_policy.c.
+
+20141012
+
+	Cleanup: missing format-string checks. Files: master/master_ent.c,
+	posttls-finger/posttls-finger.c, smtpd/smtpd_proxy.c.
+
+	Bugfix (introduced: Postfix 2.3): the PREPEND access/policy
+	action added headers ABOVE Postfix's own Received: header,
+	exposing Postfix's own Received: header to Milters (protocol
+	violation) and hiding the PREPENDed header from Milters.
+	The latter caused problems for DMARC implementations with
+	SPF policy plus DKIM Milter.  PREPENDed headers are now
+	added BELOW Postfix's own Received: header and remain visible
+	to Milters. File: smtpd/smtpd.c.
+
+20141013
+
+	Cleanup: configuration file line numbers in error/warning
+	messages could point to comment lines before or after the
+	problem. Files: util/readlline.[hc], master/master_ent.c,
+	postalias/postalias.c, postmap/postmap.c, util/dict.c,
+	util/dict_cidr.c, util/dict_pcre.e, util/dict_regexp.c,
+	util/dict_thash.c, postconf/postconf_master.c.
+
+20141014
+
+	Portability: Darwin 11.x needs to link with -lresolv. Viktor
+	Dukhovni. File: makedefs.
+
+	Documentation: ICU (unicode) library package names. File:
+	proto/SMTPUTF*_README.html.
+
+20141015
+
+	Cleanup: master.cf line number reporting made more consistent
+	with similar code elsewhere. File: master/master_ent.c.
+
+	Backed out SMTP client TLS fallback due to multiple problems.
+
+20141018
+
+	Bugfix (introduced: Postfix 2.3): when a Milter inserted a
+	header ABOVE Postfix's own Received: header, Postfix would
+	expose its own Received: header to Milters (violating
+	protocol) and hide the Milter-inserted header from Milters
+	(wtf).  Files: cleanup/cleanup.h, cleanup/cleanup_message.c,
+	cleanup/cleanup_state.c, milter/milter.[hc], milter/milter8.c.
+
+	Cleanup: revert the workaround that places headers inserted
+	with PREPEND actions or policy requests BELOW Postfix's own
+	Received: message header. File: smtpd/smtpd.c.
+
+20141019
+
+	Cleanup: replace dozens and dozens of ad-hoc string constants
+	with CHARS_SPACE, CHARS_COMMA_SP, and CHARS_BRACE. Files:
+	52, too many files to mention here.
+
+	Bugfix: the recently-introduced randmap, pipemap, and
+	unionmap did not check for all possible forms of "empty
+	list". Files: util/dict_random.c, util/dict_pipe.c,
+	util/dict_union.c.
+
+	Documentation: word smithing. File: proto/master.
+
+	Cleanup: the last remaining remnants of the withdrawn
+	smtp_tls_fallback_level feature. Files: mantools/postlink,
+	global/mail_params.h.
+
+20141021
+
+	Per IETF TLS WG consensus, the tls_session_ticket_cipher
+	default setting was changed from aes-128-cbc to aes-256-cbc.
+	Take that, you quantum computer attackers! Viktor Dukhovni.
+	Files: proto/postconf.proto, global/mail_params.h.
+
+20141024
+
+	Cleanup: added $smtpd_mumble_restrictions to the proxy_read_maps
+	default setting. File: global/mail_params.h.
+
+	Documentation: different header/body checks for MX service
+	and SMTP submissions. File: proto/BUILTIN_FILTER_README.html.
+
+	Cleanup: don't send "bare" original recipient in SMTP DSN
+	attributes. File: cleanup/cleanup_addr.c.
+
+	Feature: smtp-sink -N option to suppress DSN announcement.
+	File: smtpstone/smtp-sink.c.
+
+20141025
+
+	Bugfix (introduced: Postfix 2,11): core dump when
+	smtp_policy_maps specifies an invalid TLS level. Viktor
+	Dukhovni. File: smtp/smtp_tls_policy.c.
+
+20141103
+
+	Logging: when a connection is closed, log the request counts
+	for unimplemented STARTTLS or AUTH commands separately,
+	instead of logging such commands as "unknown". File:
+	smtpd/smtpd.c.
+
+20141106
+
+	Cleanup: set errno to ETIMEDOUT after postscreen handshake
+	timeout event, so that warnings report the correct error.
+	File: tlsproxy/tlsproxy.c.
+
+20141112
+
+	Documentation: 24 identical typos. File: proto/postconf.proto.
+
+	Workaround: support space after "MAIL FROM:" and "RCPT TO:"
+	in smtpd_command_filter examples. Reportedly, cashedge.com's
+	software (used by banks) needs this (source: Claus Assmann).
+	File: proto/postconf.proto.
+
+20141117
+
+	Cleanup: use ~0U instead of (unsigned) -1.  Based on
+	complaints from the BEAM static analyzer.  Files:
+	global/mynetworks.c, postconf/postconf.c, util/cidr_match.c.
+
+	Cleanup: forgot the "do" in "do { stuff } while (0)" macros.
+	Luckily, this had caused no problem. Based on complaints
+	from the BEAM static analyzer. Files: util/dict_cdb.c,
+	util/dict_dbm.c, util/dict_lmdb.c, util/dict_pcre.c,
+	util/dict_regexp.c, util/dict_sockmap.c, util/dict_thash.c.
+
+	Bugfix (introduced: Postfix 2.9):  lockfile descriptor leak
+	after error. Based on complaints from the BEAM static
+	analyzer. File: util/dict_db.c.
+
+	Bugfix (introduced: Postfix 1.1): don't "set" the null byte
+	element in the base64 and base32 decoding maps. Based on
+	complaints from the BEAM static analyzer. Files: util/base64_code,
+	util/base32_code.c.
+
+	Cleanup: don't exit(0) after failing to run showq(8). Based
+	on complaints from the BEAM static analyzer.  File:
+	postqueue/postqueue.c.
+
+	Bugfix: memory leak when getaddrinfo() returns a result
+	that is neither IPv4 nor IPv6.  Based on complaints from
+	the BEAM static analyzer.  File: smtp/smtp_addr.c.
+
+	Cleanup: use more meaningful name for global variable so
+	that it isn't shadowed by a local variable. Based on
+	complaints from the BEAM static analyzer. smtpstone/smtp-sink.c.
+
+20141119
+
+	Cleanup: base64 test driver. File: base64_code.c.
+
+	Cleanup: make the CONST_CHAR_STAR typedef project-wide.
+	Files: global/attr_override.h, util/sys_defs.h.
+
+	Feature: BCC action in header/body_checks and milter_header_checks.
+	Files: proto/header_checks, cleanup/cleanup.h,
+	cleanup/cleanup_extracted.c, cleanup/cleanup_message.c,
+	cleanup/cleanup_milter.c, cleanup/cleanup_milter.in16a,
+	cleanup/cleanup_milter.ref16a1, cleanup/cleanup_milter.ref16a2,
+	cleanup/cleanup_milter.reg16a, cleanup/cleanup_state.c,
+	cleanup/test-queue-file16, global/attr_override.h,
+	global/cleanup_strflags.c, global/cleanup_user.h,
+	util/sys_defs.h.
+
+	Cleanup: don't write back-to-back queue file pointer records
+	when the "add recipient" action was a NOOP (e.g., because
+	the recipient was a duplicate). File: cleanup/cleanup_milter.c.
+
+20141120
+
+	Documentation: COMPATIBILITY_README now has "purpose of
+	this document" section, plus a separate section for turning
+	off the safety net. File: proto/COMPATIBILITY_README.html
+
+20131121
+
+	Cleanup: replace mua_mumble with msa_mumble in master.cf
+	submission and smtps service parameter overrides. File:
+	proto/BUILTIN_FILTER_README.html.
+
+	Feature: "static:{ text with whitespace }".  This could be
+	used as check_mumble_access static:{reject text...} at the
+	end of smtpd_mumble_restrictions. Files: util/dict_static.c,
+	util/Makefile.in, util/dict_static_test.ref,
+	proto/DATABASE_README.html.  postconf/postconf.c (manpage).
+
+20141126
+
+	Feature: "inline:{key=value, { key = text with comma/space}}"
+	avoids the need to create a database for just a few entries.
+	Files: util/dict_inline.[hc], mantools/postlink,
+	proto/DATABASE_README.html. postconf/postconf.c (manpage),
+	util/dict_inline.[hc], util/dict_open.c, util/Makefile.in,
+	util/dict_inline_test.ref.
+
+	Cleanup: report nullmx DNS records as "domain does not
+	accept mail", instead of "invalid DNS response".  The Postfix
+	SMTP client already bounced mail for such domains, and the
+	Postfix SMTP server already rejected such domains with
+	reject_unknown_sender/recipient_domain. This introduces a
+	new SMTP server configuration parameter nullmx_reject_code
+	(default: 556).  Files: src/dns/dns_lookup.[hc], dns/Makefile,in,
+	dns/nullmx_test.ref, src/smtp/smtp_addr.c, smtpd/smtpd_check.c,
+	smtpd/smtpd_check_nullmx.in, smtpd/smtpd_check_nullmx.ref,
+	mantools/postlink, proto/postconf.proto, smtpd/smtpd.c.
+
+	Cleanup: added some missing libdns tests: dns/Makefile,in,
+	dns/mxonly_test,ref, dns/nxdomain_test.ref
+
+	Cleanup: libglobal "make test" had suffered from bitrot.
+	Files: global/mime_state.c, global/header_body_checks.c.
+
+20141127
+
+	Feature: DNS reply filter, configured with smtp_dns_reply_filter,
+	smtpd_dns_reply_filter, and lmtp_dns_reply_filter. Files:
+	mantools/postlink, proto/postconf.proto, dns/dns.h,
+	dns/dns_lookup.c, dns/dns_rr_filter.c, dns/dns_strrecord.c,
+	dns/error.ref, dns/error.reg, dns/mxonly_test.ref, dns/no-a.ref,
+	dns/no-a.reg, dns/no-aaaa.ref, dns/no-aaaa.reg, dns/no-mx.ref,
+	dns/no-mx.reg, dns/nullmx_test.ref, dns/test_dns_lookup.c,
+	global/mail_params.h, smtp/lmtp_params.c, smtp/smtp.c,
+	smtp/smtp_addr.c, smtp/smtp_params.c, smtpd/smtpd.c,
+	smtpd/smtpd_check.c, smtpd/smtpd_dns_filter.{in,ref}.
+
+20141130
+
+	Cleanup: when searching multiple DNS record types for a
+	specific name, and not all queries return the same result
+	status, do not blindly return the last query's rcode and
+	diagnostic text.  Instead, return rcode and text that is
+	consistent with the aggregate result status.
+
+	Cleanup: un-broke several smtpd regression tests (work in
+	progress, with three more to go).  Files: smtpd/smtpd_check.c,
+	smtpd/smtpd_server.{in,ref}, smtpd/smtpd_exp.{in,ref}.
+	smtpd/smtpd_dnswl.{in,ref}.
+
+	Documentation: added note on Milter-signing bounces.
+
+20141201
+
+	Bugfix (introduced: 20141130): memory leak. File: dns_lookup.c.
+
+	Cleanup: un-broke several dns regression tests by sorting
+	getaddrinfo() results by address family. Files: dns/dns_rr_eq_sa.c,
+	dns/dns_rr_eq_sa.ref, dns/dns_sa_to_rr.c, dns/dns_sa_to_rr.ref.
+
+	Cleanup: missing #ifdef in smtpd_check test driver. File:
+	smtpd/smtpd_check.c.
+
+	Cleanup: fix google.com regexp in smtp_dns_reply_filter
+	example. Viktor Dukhovni. File: proto/postconf.proto.
+
+	Cleanup: in the ASCII form of DNS resource records, add
+	space after the TLSA match-type field. Viktor Dukhovni.
+	File: dns/dns_strrecord.c.
+
+20141202
+
+	Cleanup: to increase clarity. rename DNS result status from
+	DNS_UNAVAIL to DNS_NULLMX. If someone uses the same zero-length
+	name trick with some other resource type, then we will worry
+	about that later.  Files: smtpd/smtpd_check.c, smtp/smtp_addr.c,
+	dns/dns.h, dns/dns_lookup.c.
+
+	Cleanup: eliminate TLS state duplication from state->tls
+	to session->tls. Viktor Dukhovni. Files: src/smtp/smtp.h,
+	src/smtp/smtp_connect.c, src/smtp/smtp_proto.c,
+	src/smtp/smtp_reuse.c, src/smtp/smtp_session.c.
+
+20141203
+
+	Feature: support to match UTF8 domain names against ASCII
+	names in TLS certificates. Viktor Dukhovni. Files:
+	posttls-finger/posttls-finger.c, tls/tls_client.c.
+
+20141206
+
+	Cleanup: use (char *) only for strings, not for data.  The
+	"void *" type was not fully portable during initial Postfix
+	development, but we no longer have that problem. Also started
+	the migration of data structure sizes/counters to ssize_t/size_t
+	(the IBM Beam analyzer identified lots of unnecessary 64-bit
+	to 32-bit conversions).  The transformation and verification
+	were mostly mechanical with manual supervision.  Files:
+	anvil/anvil.c, bounce/bounce.c, bounce/bounce_notify_util.c,
+	bounce/bounce_template.c, bounce/bounce_templates.c,
+	cleanup/cleanup_message.c, cleanup/cleanup_region.c,
+	cleanup/cleanup_state.c, dns/dns_lookup.c, dns/dns_rr.c,
+	dns/dns_rr_eq_sa.c, dns/dns_rr_to_sa.c, dns/test_dns_lookup.c,
+	flush/flush.c, global/abounce.c, global/abounce.h,
+	global/been_here.c, global/bounce_log.c, global/clnt_stream.c,
+	global/db_common.c, global/deliver_request.c,
+	global/delivered_hdr.c, global/dict_ldap.c, global/dict_mysql.c,
+	global/dict_pgsql.c, global/dsn.c, global/dsn_buf.c,
+	global/dsn_filter.c, global/dynamicmaps.c,
+	global/header_body_checks.c, global/header_opts.c,
+	global/mail_addr_crunch.c, global/mail_stream.c,
+	global/mail_version.c, global/maps.c, global/mbox_open.c,
+	global/mime_state.c, global/mkmap_open.c, global/msg_stats_scan.c,
+	global/mypwd.c, global/post_mail.c, global/rcpt_buf.c,
+	global/recipient_list.c, global/scache_clnt.c,
+	global/scache_multi.c, global/scache_single.c,
+	global/smtp_reply_footer.c, global/smtp_reply_footer.h,
+	global/tok822_node.c, local/biff_notify.c, local/forward.c,
+	local/local_expand.c, local/unknown.c, master/event_server.c,
+	master/master.c, master/master_avail.c, master/master_ent.c,
+	master/master_monitor.c, master/master_proto.c,
+	master/master_sig.c, master/master_spawn.c, master/master_status.c,
+	master/master_vars.c, master/master_wakeup.c,
+	master/multi_server.c, master/single_server.c,
+	master/trigger_server.c, milter/milter.c, milter/milter8.c,
+	milter/milter_macros.c, oqmgr/qmgr.c, oqmgr/qmgr_active.c,
+	oqmgr/qmgr_deliver.c, oqmgr/qmgr_entry.c, oqmgr/qmgr_message.c,
+	oqmgr/qmgr_queue.c, oqmgr/qmgr_transport.c, pipe/pipe.c,
+	postalias/postalias.c, postconf/postconf.h,
+	postconf/postconf_builtin.c, postconf/postconf_edit.c,
+	postconf/postconf_lookup.c, postconf/postconf_main.c,
+	postconf/postconf_master.c, postconf/postconf_node.c,
+	postconf/postconf_service.c, postconf/postconf_user.c,
+	postmap/postmap.c, postmulti/postmulti.c, postscreen/postscreen.c,
+	postscreen/postscreen.h, postscreen/postscreen_dnsbl.c,
+	postscreen/postscreen_early.c, postscreen/postscreen_expand.c,
+	postscreen/postscreen_haproxy.c, postscreen/postscreen_send.c,
+	postscreen/postscreen_smtpd.c, postscreen/postscreen_starttls.c,
+	postscreen/postscreen_state.c, posttls-finger/posttls-finger.c,
+	posttls-finger/tlsmgrmem.c, proxymap/proxymap.c, qmgr/qmgr.c,
+	qmgr/qmgr_active.c, qmgr/qmgr_deliver.c, qmgr/qmgr_entry.c,
+	qmgr/qmgr_job.c, qmgr/qmgr_message.c, qmgr/qmgr_peer.c,
+	qmgr/qmgr_queue.c, qmgr/qmgr_transport.c, qmqpd/qmqpd_peer.c,
+	qmqpd/qmqpd_state.c, scache/scache.c, sendmail/sendmail.c,
+	showq/showq.c, smtp/smtp_chat.c, smtp/smtp_connect.c,
+	smtp/smtp_proto.c, smtp/smtp_reuse.c, smtp/smtp_session.c,
+	smtp/smtp_state.c, smtp/smtp_tls_policy.c, smtpd/smtpd.c,
+	smtpd/smtpd_chat.c, smtpd/smtpd_check.c, smtpd/smtpd_expand.c,
+	smtpd/smtpd_expand.h, smtpd/smtpd_peer.c, smtpd/smtpd_proxy.c,
+	smtpstone/qmqp-sink.c, smtpstone/qmqp-source.c,
+	smtpstone/smtp-sink.c, smtpstone/smtp-source.c, tls/tls_dane.c,
+	tls/tls_mgr.c, tls/tls_misc.c, tls/tls_prng_dev.c,
+	tls/tls_prng_egd.c, tls/tls_prng_exch.c, tls/tls_prng_file.c,
+	tls/tls_proxy_clnt.c, tls/tls_scache.c, tls/tls_server.c,
+	tlsmgr/tlsmgr.c, tlsproxy/tlsproxy.c, tlsproxy/tlsproxy_state.c,
+	trivial-rewrite/transport.c, trivial-rewrite/trivial-rewrite.c,
+	util/argv.c, util/attr_clnt.c, util/attr_print0.c,
+	util/attr_print64.c, util/attr_print_plain.c, util/attr_scan0.c,
+	util/attr_scan64.c, util/attr_scan_plain.c, util/auto_clnt.c,
+	util/binhash.c, util/binhash.h, util/ctable.c, util/ctable.h,
+	util/dict.c, util/dict.h, util/dict_alloc.c, util/dict_cache.c,
+	util/dict_cache.h, util/dict_cidr.c, util/dict_db.c,
+	util/dict_ht.c, util/dict_open.c, util/dict_pcre.c,
+	util/dict_regexp.c, util/dict_sockmap.c, util/dict_surrogate.c,
+	util/dict_thash.c, util/edit_file.c, util/events.c,
+	util/events.h, util/fifo_trigger.c, util/find_inet.c,
+	util/htable.c, util/htable.h, util/inet_addr_host.c,
+	util/inet_addr_list.c, util/inet_addr_local.c, util/inet_listen.c,
+	util/inet_proto.c, util/inet_trigger.c, util/inet_windowsize.c,
+	util/iostuff.h, util/line_wrap.c, util/line_wrap.h,
+	util/mac_expand.c, util/mac_expand.h, util/mac_parse.c,
+	util/mac_parse.h, util/match_list.c, util/msg_output.c,
+	util/mvect.c, util/myaddrinfo.c, util/myflock.c, util/mymalloc.c,
+	util/mymalloc.h, util/nbbio.c, util/nbbio.h, util/netstring.c,
+	util/nvtable.c, util/nvtable.h, util/pass_trigger.c,
+	util/sane_accept.c, util/sane_connect.c, util/scan_dir.c,
+	util/sock_addr.c, util/stream_trigger.c, util/sys_compat.c,
+	util/sys_defs.h, util/timecmp.c, util/timed_connect.c,
+	util/timed_write.c, util/unix_connect.c, util/unix_listen.c,
+	util/unix_recv_fd.c, util/unix_send_fd.c, util/unix_trigger.c,
+	util/vbuf.c, util/vbuf.h, util/vstream.c, util/vstream_tweak.c,
+	util/vstring.c, util/watchdog.c, verify/verify.c,
+	xsasl/xsasl_cyrus_client.c, xsasl/xsasl_cyrus_server.c,
+	xsasl/xsasl_dovecot_server.c.
+
+	Cleanup: removed unnecessary casts. File: global/cfg_parser.c.
+
+	Cleanup: dont cast away "const". File: global/dict_sqlite.c.
+
+20141208
+
+	Bugfix (introduced: 20141207): in new #ifdef, && should be
+	||.  File: smtpd.c.
+
+20141210
+
+	Cleanup: the "inline" table now supports case-insensitive
+	search, and an iterator. File: util/dict_inline.c.
+
+	Cleanup: minuscule memory leaks in graceful degradation
+	after lookup table open error.  Files: util/dict_inline.c,
+	util/dict_static.c.
+
+20141211
+
+	Cleanup: memory leaks in unit-test driver programs (i.e.
+	code used only during development). Files:
+	cleanup/cleanup_milter.c, util/base64_code.c.
+
+	Bugfix (introduced 20141001): mac_expand() error message
+	with "??" due to dangling pointer. File: util/mac_expand.c.
+
+	Portability: unit-test driver programs. Files: util/myaddrinfo.c,
+	util/myaddrinfo.ref.
+
+	Portability: Clang support. Files: makedefs, util/sys_defs.h.
+
+	Portability: FreeBSD 10 support. Files: makedefs,
+	util/sys_defs.h.
+
+	Cleanup: in makedefs, the CC and WARN features are now
+	independent. File: makedefs.
+
+	Shut up some Clang format-string nags: util/events.c.
+
+	Cleanup: eliminated unnecessary 64->32bit (and back)
+	conversions on LP64 platforms.  Files: util/htable.c,
+	util/binhash.c util/mvect.[hc], util/name_mask.c,
+	util/sane_time.c, util/unix_listen.c, util/unix_connect.c,
+	util/stringops.h, util/trimblanks.c, and dependent code in
+	smtpd/smtpd_token.c.
+
+	Cleanup: unused inet_proto_init() results. Files:
+	global/mail_params.c, postconf/postconf_builtin.c,
+	smtpstone/qmqp-sink.c, smtpstone/qmqp-source.c,
+	smtpstone/smtp-source.c/
+
+	Shut up some Clang nags about unused functions in network
+	interface API selection.  File: util/inet_addr_local.c.
+
+	Portability: a historical compiler lacks printf-like
+	format-string checks for function pointers. Files: util/msg.h,
+	bounce/bounce_template.h.
+
+20141212
+
+	Shut up some Clang format-string nags: util/line_number.c,
+	sendmail/sendmail.c, smtpd/smtpd_proxy.c, smtp/smtp_sasl_proto.c.
+
+	Cleanup: eliminated unnecessary 64->32bit (and back)
+	conversions on LP64 platforms.  Files: dict_memcache.c,
+	header_body_checks.[hc], log_adhoc.c, pipe_command.c,
+	record.[hc], smtp_reply_footer.c, split_addr.c.
+	cleanup/cleanup_milter.c, master/mail_server.h,
+	src/master/trigger_server.c, oqmgr/qmgr.c, qmgr/qmgr.c,
+	pickup/pickup.c.
+
+	Cleanup: nullmx SMTP reply codes 550 and 556, and enhanced
+	status codes X.1.10 and X.7.27. The nullmx SMTP reply codes
+	are no longer configurable.  Files: global/mail_params.h,
+	smtpd/smtpd.c, smtpd/smtpd_check.c.
+
+	Portability: default table owner UID for testing.  Files:
+	util/dict_alloc.c, util/dict_open.c.
+
+	Shut up Clang unused assignment nag: global/mail_queue.h.
+	sendmail/sendmail.c, smtpd/smtpd_proxy.c, smtp/smtp_sasl_proto.c.
+
+20141214
+
+	Bugfix (introduced: 20141212): typo in Clang function pointer
+	format check, making it a noop. Viktor Dukhovni. File:
+	util/sys_defs.h.
+
+	Maintainability: compile-time argument typechecking for
+	variadic attribute-value read/write functions. Files:
+	anvil/anvil.c, bounce/bounce.c, cleanup/cleanup.c,
+	dnsblog/dnsblog.c, flush/flush.c, global/abounce.c,
+	global/anvil_clnt.c, global/bounce.c, global/defer.c,
+	global/deliver_pass.c, global/deliver_request.c,
+	global/dict_proxy.c, global/dsb_scan.c, global/dsn_print.c,
+	global/flush_clnt.c, global/mail_command_client.c,
+	global/mail_stream.c, global/msg_stats_print.c,
+	global/msg_stats_scan.c, global/post_mail.c, global/rcpt_buf.c,
+	global/rcpt_print.c, global/resolve_clnt.c, global/rewrite_clnt.c,
+	global/scache_clnt.c, global/trace.c, global/verify_clnt.c,
+	local/forward.c, milter/milter.c, milter/milter8.c,
+	milter/milter_macros.c, oqmgr/qmgr_deliver.c, pickup/pickup.c,
+	postdrop/postdrop.c, postscreen/postscreen_dnsbl.c,
+	postscreen/postscreen_send.c, postscreen/postscreen_starttls.c,
+	proxymap/proxymap.c, qmgr/qmgr_deliver.c, qmqpd/qmqpd.c,
+	scache/scache.c, smtpd/smtpd.c, smtpd/smtpd_check.c,
+	tls/tls_mgr.c, tls/tls_proxy_clnt.c, tls/tls_proxy_print.c,
+	tls/tls_proxy_scan.c, tlsmgr/tlsmgr.c, tlsproxy/tlsproxy.c,
+	trivial-rewrite/resolve.c, trivial-rewrite/rewrite.c,
+	trivial-rewrite/trivial-rewrite.c, util/attr.h.
+
+20141217
+
+	Replaced compile-time argument typechecking based on inline
+	functions with an implementation based on ternary expressions
+	with unreachable assignments to dummy variables.   This
+	should produce the exact same result as the approach based
+	on inline functions (which were standardized with C99).
+	Files: util/check_arg.h, util/attr.h, util/attr.c.
+
+20141221
+
+	Portability: proof-of-concept template for OpenBSD build
+	with shared libpostfix etc. libraries. File: makedefs.
+
+20141223
+
+	Cleanup: compile-time variadic argument type checking for
+	attribute-value APIs of vstream, vstream_popen, vstring,
+	pipe_command, spawn_command, attr_override, and mail_server
+	skeletons.  Based on mostly automatic conversion and checking,
+	with a manual inspection of the remainder.  Files:
+	anvil/anvil.c, bounce/bounce.c, cleanup/cleanup.c,
+	cleanup/cleanup_api.c, discard/discard.c, dnsblog/dnsblog.c,
+	error/error.c, flush/flush.c, global/attr_override.c,
+	global/attr_override.h, global/mail_connect.c, global/mail_queue.c,
+	global/mail_stream.c, global/mail_stream.h, global/pipe_command.c,
+	global/pipe_command.h, global/smtp_stream.c, global/timed_ipc.c,
+	local/command.c, local/local.c, master/event_server.c,
+	master/mail_server.h, master/multi_server.c,
+	master/single_server.c, milter/milter.c, milter/milter8.c,
+	oqmgr/qmgr.c, oqmgr/qmgr_transport.c, pickup/pickup.c,
+	pipe/pipe.c, postalias/postalias.c, postcat/postcat.c,
+	postdrop/postdrop.c, postmap/postmap.c, postscreen/postscreen.c,
+	postscreen/postscreen_dnsbl.c, postscreen/postscreen_haproxy.c,
+	postscreen/postscreen_starttls.c, posttls-finger/posttls-finger.c,
+	proxymap/proxymap.c, qmgr/qmgr.c, qmgr/qmgr_transport.c,
+	qmqpd/qmqpd.c, scache/scache.c, showq/showq.c, smtp/smtp.c,
+	smtpd/smtpd.c, smtpd/smtpd_check.c, smtpd/smtpd_proxy.c,
+	smtpstone/smtp-source.c, spawn/spawn.c, tls/tls_proxy_clnt.c,
+	tls/tls_stream.c, tlsmgr/tlsmgr.c, tlsproxy/tlsproxy.c,
+	trivial-rewrite/trivial-rewrite.c, util/auto_clnt.c,
+	util/ctable.c, util/dict_cache.c, util/dict_cache.h,
+	util/dict_lmdb.c, util/dict_tcp.c, util/netstring.c,
+	util/recv_pass_attr.c, util/slmdb.c, util/slmdb.h,
+	util/spawn_command.c, util/spawn_command.h, util/vstream.c,
+	util/vstream.h, util/vstream_popen.c, util/vstream_tweak.c,
+	util/vstring.c, util/vstring.h, verify/verify.c,
+	virtual/virtual.c, xsasl/xsasl_dovecot_server.c.
+
+20141224
+
+	Cleanup: the compile-time argument typechecks for attribute-value
+	APIs are now by default implemented with inline functions.
+	Compile with -DNO_INLINE to implement the argument typechecks
+	with ternary operators and unreachable assignments.  Files:
+	util/check_arg.h and its consumers.
+
+20141226
+
+	NetBSD6/7 dynamic linking support. Viktor Dukhovni.
+
+	Cleanup: instead of making up new names, use a consistent
+	CA_ prefix for macros that implement compile-time argument
+	typechecks for non-protocol attribute-value APIs. This
+	transformation and its verification are mechanical.
+
+	Bugfix (introduced: Postfix 1.1, but latent before 3.0):
+	"postfix-install: daemon_directory: not found" error with
+	an ancient Solaris shell.  Fixed by ALSO resetting IFS after
+	the end of a ``while IFS=foo command'' loop; counter to
+	expectation, the IFS reset in the loop body executed in a
+	child process.  Background: some shells implement "IFS=foo
+	command" as a permanent IFS change; this was allowed by
+	standards at some point in time.  File: postfix-install.
+
+20141227
+
+	Feature: smtp_address_verify_target (default: rcpt) that
+	determines what protocol stage decides if a recipient is
+	valid. Specify "data" for servers that reject recipients
+	after the DATA command. Files: mantools/postlink,
+	proto/postconf.proto, proto/ADDRESS_VERIFICATION_README.html,
+	global/mail_params.h, smtp/lmtp_params.c, smtp/smtp.c,
+	smtp/smtp.h, smtp/smtp_params.c, smtp/smtp_proto.c.
+
+20141228
+
+	Cleanup: the IDNA conversion routines now accept both ASCII
+	and UTF8 inputs. The functions als verify that either their
+	result is a valid ASCII domain name or that it converts
+	into a valid ASCII domain name. Files: util/midna.c,
+	util/midna_test.in, util/midna_test.ref.
+
+20141230
+
+	Cleanup: s/midna/midna_domain/ for better specificity,
+	because we also need functions that act only on the domain
+	portion of an email address. Files: bounce/bounce_template.c,
+	global/midna_adomain.c, posttls-finger/posttls-finger.c,
+	smtp/smtp_addr.c, smtpd/smtpd_check.c, tls/tls_client.c,
+	util/midna_domain.[hc], util/valid_utf8_hostname.c.
+
+	Infrastructure: function midna_adomain_to_utf8() (and
+	midna_adomain_to_ascii) to convert the domain portion of
+	an email address before table lookup. Files:
+	global/midna_adomain.[hc].
+
+20141230-20140109
+
+	What is described here is the result of four iterations to
+	deal with malformed UTF-8 without massively contaminating
+	every Postfix program with new error-handling code paths,
+	in particular without triggering fatal errors that didn't
+	happen before.
+
+	Infrastructure: function casefold() to support caseless
+	string comparison, primarily for table lookups. This function
+	supports two modes: case folding a la lowercase() for ASCII
+	byte values, and UTF-8 case folding. As recommended at
+	http://www.w3.org/International/wiki/Case_folding for
+	caseless string comparison, this uses the en_US locale to
+	avoid surprises. The implementatin handles the entire RFC
+	3629 Unicode range (code points U+0000..U+10FFFF including
+	surrogates) and is chroot(2) safe. Files: casefold.c,
+	stringops.h.
+
+	Infrastructure: revised the midna_domain_to_ascii and
+	midna_domain_to_utf8 domain name conversion functions after
+	careful reading of the UTS #46 specification, and after
+	observing that ICU 4.8 library functions indeed implement
+	this spec, at least with default options. In particular,
+	midna_domain_to_utf8 takes an UTF-8 domain name and verifies
+	that its A-label form will pass the valid_hostname() test.
+	File: util/midna_domain.c.
+
+	Infrastructure: handle UTF-8 errors in lookup table keys
+	or values without massively contaminating every Postfix
+	program with new error-handling code paths, in particular
+	without triggering fatal errors that didn't happen before.
+	The lookup/update/delete functions log a warning and ignore
+	a request with a bad key (it cannot exist); the update
+	functions ignore a request to store a bad value (it cannot
+	exist); and the lookup function reports a bad value as a
+	configuration error (it should not exist, but there it is).
+	Table iterators still report all (key, value) pairs in a
+	table. Files: util/dict.h, util/dict_open.c, util/dict_utf8.c,
+	global/mkmap_open.c.
+
+	Note that with SMTPUTF8 turned on, each table-driven mechanism
+	(access, aliases, etc.) needs to make its own decision
+	whether UTF-8 syntax is required. We cannot blindly require
+	that everything has valid UTF-8 syntax. That would make
+	header/body_checks useless for content inspection, because
+	headers may be malformed and bodies may contain legitimate
+	binary content that isn't UTF-8.
+
+	Note that with SMTPUTF8 turned off, Postfix must remain
+	8-bit clean as it always has been. Table operations must
+	not complain that something violates UTF-8 syntax rules.
+
+	UTF-8 sanitization in the Postfix SMTP server.  With
+	smtputf8_enable=yes, SMTP commands with UTF-8 syntax errors
+	are rejected, table lookup results with invalid UTF-8 syntax
+	are handled as configuration errors, and UTF-8 syntax errors
+	in policy server replies result in execution of the policy
+	server's default action.
+
+20150102
+
+	Cleanup: propagate DICT_ERR_CONFIG through the proxymap
+	protocol. Files: global/dict_proxy.[hc], proxymap/proxymap.c.
+
+20150106
+
+	Robustness: don't segfault due to excessive recursion in
+	tok822_free_tree() after a faulty configuration runs into
+	the virtual_alias_recursion_limit.  File: global/tok822_tree.c.
+
+20150109
+
+	Cleanup: the dict debug module now proxies dict flags.
+	File: util/dict_debug.c.
+
+	With "smtputf8_enable = yes", the postmap and postalias
+	commands now enable UTF-8 by default (use "-u" to disable)
+	with one exception: UTF-8 remains disabled for header/body_checks
+	emulation (use "-U" to enable).  Files: postmap/postmap.c,
+	postalias/postalias.c.
+
+20150110
+
+	Cleanup: the "inline" and "texthash" implementations now
+	reuse the "internal" database instead of reinventing the
+	wheel.  Files: util/dict_inline.c, util/dict_thash.c.
+
+	As a first step, with "smtputf8_enable = yes" all features
+	based on Postfix matchlists enable UTF-8 syntax checks and
+	UTF-8 casefolding for table patterns, but NOT YET for string
+	patterns. The list of features includes authorized_flush_users,
+	authorized_mailq_users, authorized_submit_users, debug_peer_list,
+	fast_flush_domains, mydestination, permit_mx_backup_networks,
+	qmqpd_authorized_clients, smtp_connection_cache_destinations,
+	smtpd_authorized_verp_clients, smtpd_authorized_xclient_hosts,
+	smtpd_authorized_xforward_hosts,
+	smtpd_client_event_limit_exceptions,
+	smtpd_log_access_permit_actions, smtpd_sasl_exceptions_networks,
+	the "domains" feature in ldap_table(5), memcache_table(5)
+	mysql_table(5), pgsql_table(5) and sqlite_table(5),
+	virtual_alias_domains, virtual_mailbox_domains.
+
+20150111
+
+	Cleanup: simplified the interposition layer that adds UTF-8
+	support to Postfix lookup tables. Files: util/dict_utf8.c.
+
+	With "smtputf8_enable = yes", Enable UTF-8 syntax checks
+	and UTF-8 casefolding for SMTP server access maps, alias_maps,
+	canonical_maps, fallback_transport_maps,
+	lmtp_tls_session_cache_database, local_recipient_maps,
+	mailbox_command_maps, mailbox_transport_maps, rbl_reply_maps,
+	recipient_bcc_maps, recipient_canonical_maps, relay_recipient_maps,
+	relocated_maps, sender_bcc_maps, sender_canonical_maps,
+	sender_dependent_relayhost_maps, sender_dependent_transport_maps,
+	smtp_generic_maps, smtp_sasl_auth_cache_name,
+	smtp_sasl_password_maps, smtp_tls_per_site, smtp_tls_policy_maps,
+	smtp_tls_session_cache_database, smtpd_sender_login_maps,
+	smtpd_tls_session_cache_database, transport_maps,
+	virtual_alias_maps, virtual_gid_maps, virtual_mailbox_maps,
+	virtual_uid_maps.
+
+20150112
+
+	Infrastructure: support for UTF-8 casefolding in match_lists.
+	Instead of using strcasecmp(), casefold all fixed-string
+	patterns during initialization, casefold a search string
+	at the beginning of the search, and use strcmp() for
+	comparison.  Files: util/casefold.c util/dict.h, util/dict_utf8.c,
+	util/match_list.c, util/match_list.h, util/match_ops.c,
+	util/stringops.h, global/addr_match_list.c, global/domain_list.c,
+	global/namadr_list.c, global/string_list.c.
+
+20150113
+
+	Cleanup: show the configuration parameter name in error
+	messages while parsing or searching match_list-based features
+	such as mydestination, relay_domains and a few dozen more.
+	Files: cleanup/cleanup_init.c, flush/flush.c,
+	global/addr_match_list.c, global/debug_peer.c,
+	global/domain_list.c, global/flush_clnt.c,
+	global/match_parent_style.c, global/namadr_list.c,
+	global/resolve_local.c, global/string_list.c, global/user_acl.[hc],
+	postdrop/postdrop.c, postqueue/postqueue.c,
+	postscreen/postscreen.c, qmqpd/qmqpd.c, sendmail/sendmail.c.,
+	smtp/smtp.c, smtp/smtp_sasl_glue.c, smtpd/smtpd.c,
+	smtpd/smtpd_check.c, trivial-rewrite/resolve.c,
+	util/match_list.[hc], util/match_ops.c.
+
+	Cleanup: apply printable() to all bounce(8) service
+	string-valued protocol fields. File: bounce/bounce.c.
+
+	Apparenly the UCI 4.8 ucasemap_utf8FoldCase() function does
+	not complain about UTF-8 syntax errors, so we add our own
+	redundant check. File: util/casefold.c.
+
+20150115
+
+	Bitrot: prepare for future changes in OpenSSL. Viktor
+	Dukhovni. Files: tls/tls.h, tls/tls_dh.c, tls/tls_misc.c,
+	tls/tls_rsa.c, tls/tls_server.c.
+
+	Documentation: "avoid hash files here, use btree or lmdb
+	instead".  File: proto/ADDRESS_VERIFICATION_README.html.
+
+	Safety: virtual_alias_address_length_limit (default: 1000)
+	to stop aliasing loops that exponentially increase the
+	address length with each iteration. Files: global/mail_params.h,
+	mantools/postlink, proto/postconf.proto, cleanup/cleanup.c,
+	cleanup/cleanup_init.c, cleanup/cleanup_map1n.c.
+
+20150116
+
+	TLS wrappermode in the Postfix smtp(8) client. This introduces
+	a new parameter "smtp_tls_wrappermode" (default: no). Files:
+	global/mail_params.h, mantools/postlink, proto/postconf.proto,
+	smtp/lmtp_params.c, smtp/smtp.[hc], smtp/smtp_connect.c,
+	smtp/smtp_params.c, smtp/smtp_proto.c.
+
+	TLS wrappermode in posttls-finger(1), and some DANE-related
+	cleanups. This introduces a new option "-w". Viktor Dukhovni.
+	Files: posttls-finger/posttls-finger.c, smtp/smtp_tls_policy.c,
+	tls/tls.h, tls/tls_client.c, tls/tls_fprint.c.
+
+20150117
+
+	Cleanup: missing " in \%s\" in postscreen(8) fatal error
+	messages. Iain Hibbert. File: postconf/postconf_master.c.
+
+20150118
+
+	Bugfix (introduced: 20140731): when a connection timed out
+	before any command was received, the Postfix SMTP server
+	"disconnect from" logging would show the content of the
+	last SMTP server response (421 4.4.2 $myhostname error:
+	timeout exceeded) instead of per-command statistics, because
+	there were no statistics to report.  The Postfix SMTP server
+	now always logs the total number of commands (commands=x/y)
+	even when the client did not send any. This helps logfile
+	analyzers to recognize sessions without commands.  File:
+	smtpd/smtpd.c.
+
+20150120
+
+	Bugfix (introduced: 20141230-20140109): do not reallocate
+	a dictionary handle after it is initialized. This breaks
+	CDB. Problem reported by Andreas Schulze. Files: util/dict.h,
+	util/dict_alloc.c, util/dict_utf8.c.
+
+	Cleanup: simplified the dict_utf8 wrapper implementation.
+	Files: util/dict.h, util/dict_alloc.c, util/dict_utf8.c.
+
+20150121
+
+	Cleanup: undo changes in check_mumble_access() that replaced
+	error handling with longjmp() calls. This could introduce
+	memory leaks in check_mumble_access() callers. Files:
+	smtpd/smtpd_check.c, smtpd/smtpd_error.ref.
+
+20150122
+
+	Cleanup: miscellaneous cruft, typos, comments, error messages.
+	proto/COMPATIBILITY_README.html, global/addr_match_list.c,
+	global/domain_list.c, global/namadr_list.c, global/string_list.c,
+	global/user_acl.c, postalias/postalias.c, postmap/postmap.c,
+	tls/tls_client.c, util/dict_alloc.c, util/dict_open.c,
+	util/match_list.c.
+
+20150124
+
+	Workaround: nroff has been improved so that "-" comes out as
+	some non-ASCII character, unlike HTML where it comes out
+	as itself.  Andreas Schulze. This requires jumping a few
+	hops to generate HTML and nroff input from the same source
+	text.  Files; mantools/srctoman, mantools/postconf2man.
+
+	Cleanup: UTF-8 support in masquerade_domains.  File:
+	cleanup/cleanup_masquerade.c.
+
+20150125
+
+	Cleanup: simplified the casefold() API: no input-dependent
+	failure modes. Files: cleanup/cleanup_masquerade.c,
+	util/casefold.c, util/dict_utf8.c, util/match_list.c,
+	util/strcasecmp_utf8.c, util/stringops.h.
+
+	Cleanup: replaced str*casecmp() calls with UTF8-enabled
+	versions. Files: bounce/bounce.c, bounce/bounce_append_service.c,
+	bounce/bounce_notify_service.c, bounce/bounce_notify_verp.c,
+	bounce/bounce_one_service.c, bounce/bounce_trace_service.c,
+	bounce/bounce_warn_service.c, cleanup/cleanup_addr.c,
+	cleanup/cleanup_map11.c, cleanup/cleanup_map1n.c,
+	global/log_adhoc.c, global/mail_addr_find.c, global/mail_params.c,
+	global/split_addr.c, global/verify.c, global/verify_sender_addr.c,
+	local/alias.c, local/recipient.c, oqmgr/qmgr_message.c,
+	qmgr/qmgr_message.c, smtp/smtp_tls_policy.c, smtpd/smtpd_check.c,
+	smtpd/smtpd_milter.c, trivial-rewrite/resolve.c,
+	util/strcasecmp_utf8.c, util/stringops.h.
+
+20150126
+
+	Portability: added missing #ifdef STRCASECMP_IN_STRINGS_H
+	for platforms that require it. Files: dns/dns_rr_filter.c,
+	milter/milter8.c, posttls-finger/posttls-finger.c,
+	tls/tls_dane.c, tlsproxy/tlsproxy.c, util/dict_test.c.
+
+	Cleanup: replaced lowercase() calls with UTF-8-enabled
+	versions. Files: flush/flush.c, global/been_here.c,
+	global/delivered_hdr.c, global/fold_addr.c, global/fold_addr.h,
+	local/forward.c, local/recipient.c, pipe/pipe.c,
+	smtpd/smtpd_resolve.c, util/casefold.c, util/stringops.h,
+	virtual/recipient.c.
+
+20150127
+
+	Cleanup: simplified the 20150125 and 20150126 APIs, replacing
+	the most-common use cases with convenience macros that have
+	fewer arguments. Files: anything that implements or invokes
+	casefold*() or str*casecmp().
+
+	Documentation: missing words and typos. Matthew Selsky. Files:
+	proto/SMTPUTF8_README.html, util/dict_open.c, util/vstream.c.
+
+20150128
+
+	Bugfix: the ICU casemapping API can report success, while
+	producing output that is not null-terminated. But we can
+	deal with that. File: util/casefold.c.
+
+	Cleanup: unnecessary buffers. File: util/strcasecmp_utf8.c.
+
+	Cleanup: whitespace in source-code documentation has gotten
+	damaged through the years. Files: util/iostuff.h,
+	util/msg_vstream.h, util/msg_syslog.h, util/msg_output.h,
+	util/msg.h, util/inet_proto.c, trivial-rewrite/trivial-rewrite.c,
+	tls/tls.h, postconf/postconf.c, master/multi_server.c,
+	master/event_server.c, global/memcache_proto.h,
+	global/dict_mysql.c, global/dict_ldap.c, discard/discard.c,
+	error/error.c, global/dict_proxy.c, global/mail_conf_int.c,
+	global/match_parent_style.c, global/scache.c, global/scache.h,
+	qmgr/qmgr_entry.c, qmgr/qmgr_peer.c, smtp/smtp_rcpt.c,
+	smtpd/smtpd_peer.c, tls/tls_mgr.c, util/attr_scan0.c,
+	util/dict_tcp.c, util/hex_code.c, util/valid_hostname.c.
+
+	Cleanup: typos. Files: proto/socketmap_table, proto/mysql_table,
+	global/dict_mysql.c, proto/lmdb_table, smtpstone/smtp-sink.c,
+	posttls-finger/posttls-finger.c.
+
+	Bugfix: restart the Postfix SMTP server SASL client after
+	XCLIENT may have changed the client IP address. Matthew
+	Via. File: smtpd/smtpd.c.
+
+20150129
+
+	More whitespace in source-code comment regressions. Viktor
+	(mostly) and Wietse.  smtpd/smtpd_proxy.c, util/format_tv.c,
+	util/line_wrap.c, util/slmdb.c, qmgr/qmgr_peer.c,
+	smtp/smtp_rcpt.c, smtpd/smtpd_peer.c, tls/tls_mgr.c,
+	trivial-rewrite/trivial-rewrite.c, util/attr_scan0.c,
+	util/dict_tcp.c, util/hex_code.c, util/valid_hostname.c,
+	discard/discard.c, error/error.c, global/dict_proxy.c,
+	global/mail_conf_int.c, global/match_parent_style.c,
+	global/scache.c, qmgr/qmgr_entry.c, global/dict_ldap.c,
+	global/dict_mysql.c, posttls-finger/posttls-finger.c,
+	smtp/smtp.c, tls/tls_certkey.c.
+
+	Cleanup: avoid hidden buffer allocation in casefold().
+	Files: local/forward.c, local/recipient.c, virtual/recipient.c.
+
+	Cleanup: HTML validator errors. Files: proto/postconf.proto,
+	proto/TLS_README.html, proto/MILTER_README.html.
+
+	Great rename from 2.12 to 3.0. Lots of files, 99% mechanical.
+
+	Cleanup: HTML entities in *roff manpage source. File:
+	mantools/fixman, proto/postconf.proto, smtpd/smtpd.c,
+	trivial-rewrite/trivial-rewrite.c.
+
+20150201
+
+	Usability: in error messages, print the CAfile and CApath
+	value in double quotes, to clue in people who specify quoted
+	pathnames in main.cf. Viktor Dukhovni. Files: tls/tls_certkey.c
+	and testing code in posttls-finger/posttls-finger.c.
+
+20150202
+
+	Cleanup: make posttls-finger -k/-K documentation consistent
+	with behavior. File: posttls-finger/posttls-finger.c.
+
+20150203
+
+	Cleanup: API minimization, by making some functions static.
+	Files: util/dict.h, util/dict_utf8.c.
+
+20150205
+
+	Preliminary feature: support for building position-independent
+	executables (PIE), tested on Fedora Core 20, Ubuntu 14.04,
+	FreeBSD 9 and 10, and NetBSD 6. See INSTALL section 4.3 for
+	details and limitations. Files: makedefs, proto/INSTALL.html,
+	RELEASE_NOTES-3.0.
+
+20150208
+
+	Cleanup: after many years, the access(5) map BCC action is
+	part of the stable release. Files: smtpd/smtpd_check.c,
+	proto/acces.
+
+20150210
+
+	Cleanup: socketmap documentation. File: proto/socketmap_table.
+
+20150211
+
+	Cleanup: strncasecmp_utf8() streamlining. Files: util/stringops.h,
+	util/allascii.c, util/strcasecmp_utf8.c.
+
+20150212
+
+	Cleanup: in code after reading main.cf, removed bogus guard
+	before re-evaluating the mail_task() syslog prefix.  File:
+	postlog/postlog.c.
+
+20150214
+
+	Bugfix (introduced: Postfix 3.0): missing #ifdef USE_TLS
+	inside #ifdef USE_SASL_AUTH broke the build. Viktor Dukhovni.
+	File: smtpd/smtpd.c.
+
+	Cleanup: missing errno logging in bounce daemon clients.
+	This made troubleshooting significantly more difficult.
+	File: global/mail_command_client.c.
+
+20150216
+
+	Cleanup: documented that mail_connect() produces no errno
+	logging.  The functions that call it should log the error
+	(and the majority does). File: global/mail_connect.c.
+
+	Cleanup: added errno logging after mail_connect() failure.
+	Files: global/post_mail.c, local/forward.c.
+
+	Cleanup: in code after reading main.cf, removed bogus guard
+	before re-evaluating the mail_task() syslog prefix. Files:
+	postalias/postalias.c, postdrop/postdrop.c, postmap/postmap.c,
+	postqueue/postqueue.c, postsuper/postsuper.c, sendmail/sendmail.c.
+
+20150218
+
+	Documentation: header/body_checks additional text about whether
+	an action stops further inspection of the input stream.  File:
+	proto/header_checks.
+
+	Robustness: reject installation pathnames with whitespace.
+	File: postfix-install.
+
+20150217
+
+	Cleanup: missing <string.h> include. File: util/allascii.c.
+
+20150221
+
+	Bugfix (introduced: Postfix 3.0): don't append '.' to the
+	DNS resource record value, when converting TXT records to
+	the string form that is used used by xxx_dns_reply_filter.
+	File: dns/dns_strrecord.c.
+
+20150313
+
+	Documentation: incorrect Postfix version number for
+	postscreen_dnsbl_timeout. Quanah Gibson-Mount. File:
+	postscreen/postscreen.c.
+
+20150320
+
+	Cleanup: better sorting order for the default tls_*_cipherlist
+	settings. OpenSSL does not order "ALL" quite right: some
+	MEDIUM ciphers (SEED and IDEA) sneak up above some 128-bit
+	HIGH ciphers.  Also previously, when we prefer "aNULL" we
+	moved MEDIUM with aNULL above same bit-length HIGH but not
+	aNULL.  Viktor Dukhovni.  File: global/mail_params.h.
+
+20150324
+
+	Bugfix (introduced: Postfix 2.6): sender_dependent_relayhost_maps
+	ignored the relayhost setting in the case of a DUNNO lookup
+	result.  It would use the recipient domain instead.  Viktor
+	Dukhovni. Wietse took the pieces of code that enforce the
+	precedence of a sender-dependent relayhost, the global
+	relayhost, and the recipient domain, and put that code
+	together in once place so that it is easier to maintain.
+	File: trivial-rewrite/resolve.c.
+
+20150326
+
+	Feature: lmtp_fallback_relay, limited to TCP destinations
+	only.  Viktor Dukhovni. Wietse updated the postlink, smtp.c,
+	and smtp-only files, and added a warning when lmtp_fallback_relay
+	is specified for a non-TCP destination. Files: mantools/postlink,
+	smtp/smtp.c, smtp/smtp-only, smtp/smtp_connect.c,
+	smtp/smtp_params.c, global/mail_params.h, proto/postconf.proto.
+
+20150328
+
+	Bugfix (introduced: Postfix 1.1.0): post-install expanded
+	macros in parameter values when trying to detect parameter
+	overrides, causing unnecessary main.cf updates during Postfix
+	start-up. Julian Reich, Viktor Dukhovni, and Wietse.  File:
+	conf/post-install.
+
+20150330
+
+	Bitrot: prepare for future changes in OpenSSL API. Viktor
+	Dukhovni. File: tls_dane.c.
+
+	Safety: instead of bouncing mail, report a soft error when
+	SASL infrastucture breaks.  Viktor Dukhovni, Emmanuel Fuste.
+	Files: smtpd/smtpd_sasl_glue.c, xsasl/xsasl.h,
+	xsasl/xsasl_cyrus_server.c, xsasl/xsasl_dovecot_server.c.
+
+20150401
+
+	Documentation: update the mydestination default value in
+	the stock main.cf file.  File: conf/main.cf.
+
+20150404
+
+	Documentation: add "postconf -m" output to problem reports. File:
+	proto/DEBUG_README.html.
+
+20150418
+
+	Portability: use the icu-config utility to locate the ICU
+	include and library files. With this, Postfix builds out
+	of the box on MacOS X. File: makedefs.
+
+20150421
+
+	Bugfix (introduced: 19970309): reset errno before calling
+	readdir(), in order to distinguish between end-of-directory and
+	an error condition. File: scandir.c.
+
+20150426
+
+	Cleanup: when transmitting an attribute-value sequence
+	between Postfix processes, a hash table may now appear at
+	any position instead of only at the end.  Files:
+	util/attr_scan{0,64,plain}.c, util/attr_print{0,64,plain}.c,
+	util/attr_scan{0,64,plain}.ref.
+
+	Feature: milter_macro_defaults, an optional list of macro
+	name=value pairs that specify default values for Milter
+	macros.  When a macro is to be sent to a Milter application,
+	Postfix will send its default value when no value is available
+	from the mail delivery context. For example, with
+	"milter_macro_defaults = auth_type=TLS", Postfix will send
+	an auth_type of "TLS" unless a remote client authenticates
+	with SASL. Files: mantools/postlink, proto/MILTER_README.html,
+	proto/postconf.proto, cleanup/cleanup.c, cleanup/cleanup_init.c,
+	cleanup/cleanup_milter.c, global/mail_params.h, milter/milter.c,
+	milter/milter.h, smtpd/smtpd.c, smtpd/smtpd_milter.c.
+
+20150501
+
+	Support for Linux 4.*, and some simplification for future
+	makedefs files. Files: makedefs, util/sys_defs.h.
+
+20150502
+
+	Cleanup: updated the examples in MILTER_README.  File:
+	proto/MILTER_README.html
+
+20150529
+
+	Support for DNS reply TTL values in dnsblog and postscreen.
+	Files: dnsblog/dnsblog.c, postscreen/postscreen_early.c,
+	postscreen/postscreen_dnsbl.c.
+
+20150607
+
+	Support for DNS reply TTL values for "not found" responses
+	(negative reply caching).  The postscreen daemon needs this to
+	accurately whitelist an SMTP client that is not found on any
+	DNSBL. Files: dns/dns_lookup.c, dns/dns_strrecord.c, dns/dns.h,
+	dns/test_dns_lookup.c.
+
+20150615
+
+	Two new parameters to limit how long a DNSBL or DNSWL lookup
+	result remains valid: postscreen_dnsbl_max_ttl is an upper
+	limit for the TTL from a DNS query, and postscreen_dnsbl_min_ttl
+	is a lower limit. The old postscreen_dnsbl_ttl provides a
+	backwards-compatible default for postscreen_dnsbl_max_ttl.
+	Files: global/mail_params.h, postscreen/postscreen.c,
+	postscreen/postscreen_early.c, mantools/postlink,
+	proto/postconf.proto.
+
+20150616
+
+	Refinement: the postscreen daemon now computes two combined
+	DNS reply TTLs: one combined TTL for replies that the client
+	should be blocked, and one combined TTL for replies that the
+	client should be allowed. This is more conservative than
+	simply combining all reply TTLs into one number.  File:
+	postscreen/postscreen_dnsbl.c.
+
+20150621
+
+	Feature: default_transport_rate_delay (and the transport-specific
+	*transport*_transport_rate_delay) to enforce a destination-
+	independent rate limit on deliveries.  Files: mantools/postlink,
+	proto/postconf.proto, *qmgr/qmgr.h, *qmgr/qmgr_transport.c,
+	*qmgr/qmgr_deliver.c, *qmgr/qmgr.c.
+
+20150707
+
+	Workaround: some DNS servers reply with NXDOMAIN for type
+	NS queries with names that actually have an A record. This
+	broke check_mumble_ns_access.  File: smtpd/smtpd_check.c.
+
+20150711
+
+	Workaround: conditional time default value can result in
+	multiple time unit suffixes. Files: global/conv_time.c
+	global/mail_conf_time.c.
+
+20150712
+
+	Cleanup: configurable workaround (dns_ncache_ttl_fix_enable)
+	in case some future libc change breaks a promise made by
+	current resolver(3) documentation. Files: global/mail_params.[hc].
+
+	Cleanup: removed unused libdns dependencies. No-one remembers
+	why they were introduced. Files: postscreen/Makefile.in,
+	qmqpd/Makefile.in, smtpd/Makefile.in, tlsmgr/Makefile.in.
+
+	Cleanup: code indentation. Viktor Dukhovni. File:
+	smtp/smtp_addr.c.
+
+	Workaround: With Solaris10, write_wait() hangs in poll()
+	until timeout, when invoked after peekfd() has received an
+	ECONNRESET error indication. This happens when a client
+	sends QUIT and closes the connection immediately. File:
+	util/peekfd.c.
+
+20150715
+
+	Security: updated default Diffie-Hellman export (512 bit)
+	primes and non-export (from 1024 to 2048 bit) primes, and
+	updated text on non-export DH primes. Viktor Dukhovni.
+	Files: tls/tls_dh.c, proto/FORWARD_SECRECY_README.html.
+
+20150718
+
+	Security: opportunistic TLS by default uses "medium" or
+	stronger ciphers instead of "export" or stronger. See the
+	RELEASE_NOTES file for how to get the old settings back.
+	Files: global/mail_params.h, proto/TLS_README.html,
+	proto/postconf.proto, and files derived from those.
+
+20150719
+
+	Security: Postfix TLS support by default no longer uses
+	SSLv2 or SSLv3.  See the RELEASE_NOTES file for how to get
+	the old settings back. Files: global/mail_params.h,
+	proto/postconf.proto, and files derived from those.
+
+20150722
+
+	Cleanup: the COMPATIBILITY_README* files were not installed.
+	File: conf/postfix-files.
+
+20150726
+
+	Cleanup: some lost edits for the SASL_README file. File:
+	proto/SASL_README.html.
+
+20150816
+
+	Workaround: updated the 20150707 fix for DNS servers that
+	reply with NXDOMAIN for type NS queries instead of (NOERROR,
+	zero answers).  File: smtpd/smtpd_check.c.
+
+20150829
+
+	Documentation: TLS session tickets are preferred over the
+	local server-side smtpd_tls_session_cache_database storage.
+	TLS session tickets are supported as of OpenSSL 0.9.8h (May
+	2008).  Files: mantools/postlink, proto/TLS_README.html,
+	proto/postconf.proto.
+
+20150831
+
+	Cleanup: obsolete comments in Makefile.init.
+
+20150903
+
+	Workaround: disable DNSSEC support for AIX 7x and earlier.
+	The AIX 6/7 resolver(5) API defines RES_USE_DNSSEC without
+	defining the "ad" bit.  Viktor Dukhovni.  Files: makedefs,
+	proto/INSTALL.html, dns/dns.h.
+
+20150912
+
+	Future-proofing and code cleanup: exploit GCC and Clang
+	"warn_unused_result" feature to flag missing error checks.
+	Files: util/sys_defs.h, util/attr.h, util/edit_file.h,
+	util/listen.h, util/lstat_as.h, util/mac_expand.h,
+	util/mac_parse.h, util/myaddrinfo.h, util/myflock.h,
+	util/sane_fsops.h, util/sane_socketpair.h, util/stat_as.h,
+	util/base32_code.h, util/base64_code.h, util/hex_code.h,
+	util/timed_wait.h, util/vstream.h, src/util/vstring_vstream.h.
+
+	Cleanup: incomplete error check. Found with WARN_UNUSED_RESULT
+	check. File: util/recv_pass_attr.c.
+
+	Future-proofing: added type mis-match detection for
+	ATTR_TYPE_FUNC function-pointer arguments. File: util/attr.h.
+
+	Cleanup: don't ignore seek-to-end-of-file errors.  File:
+	global/record.c.
+
+	Cleanup: use vstream_fpurge() to purge VSTREAM buffers,
+	instead of calling vstream_fseek() and ignoring ESPIPE
+	errors.  File: smtpstone/qmqp-sink.c.
+
+20150913
+
+	Feature: SMTPD policy service "policy_context" attribute
+	and smtpd_policy_service_policy_context main.cf parameter.
+	Originally, to share the same SMTPD policy service endpoint
+	among multiple check_policy_service clients. Markus Benning.
+	Files: mantools/postlink, proto/SMTPD_POLICY_README.html,
+	proto/postconf.proto, global/mail_params.h, global/mail_proto.h,
+	smtpd/smtpd.c, smtpd/smtpd_check.c.
+
+20150923
+
+	Bugfix (introduced: 20120531-617): the Postfix SMTP server
+	used a larger-than-1 VSTREAM buffer to read the HAProxy
+	connection hand-off information. This broke TLS wrappermode,
+	as the TLS helo packet would end up in the plaintext VSTREAM
+	buffer. Reported by Lukas Erlacher.  File: smtpd/smtpd_haproxy.c.
+
+20150924
+
+	Cleanup (introduced: 20060510, exposed 20150912): eliminated
+	a harmless warning message "seek error after reading END
+	record: Illegal seek" from the cleanup server after a
+	check_sender_access DISCARD action.  File: cleanup/cleanup.c.
+
+	Bugfix (introduced: 20090216-24): incorrect postmulti error
+	message. Reported by Patrik Koetter. Fix by Viktor Dukhovni.
+	File: postmulti/postmulti.c.
+
+	Workaround: don't create a new instance when the template
+	main.cf and master.cf files are missing, as happens on
+	Debian-like systems. Viktor Dukhovni. File: conf/postmulti-script.
+
+20150930
+
+	Bugfix (introduced: 20040124): Milter client panic while
+	adding a header, because the PREPEND action used the same
+	output function for header_checks and body_checks.  Viktor
+	Dukhovni and Wietse. File: cleanup/cleanup_message.c.
+
+	Bugfix (introduced: 20031128): xtext_unquote() did not
+	propagate error reports from xtext_unquote_append(), causing
+	the decoder to return partial output, instead of rejecting
+	malformed input. Fix by Krzysztof Wojta.  File: global/xtext.c.
+
+20151003
+
+	Bugfix (copied from xtext): uxtext_unquote() did not propagate
+	error reports from uxtext_unquote_append(), causing the
+	decoder to return partial output, instead of rejecting
+	malformed input.  Found by searching the code for similar
+	error patterns as with xtext_unquote().  File: global/uxtext.c.
+
+	Cleanup: added missing "negative" unit tests. Files:
+	global/xtext.c, global/uxtext.c.
+
+20151004
+
+	Future proofing: use a real VSTRING in the 20150930 header
+	PREPEND fix. File: cleanup/cleanup_message.c.
+
+	Future proofing: make vstring_import() consistent with
+	vstring_alloc(). The alternative would be to remove the
+	function as it is unused and exists only for symmetry with
+	vstring_export(). File: usr/vstring.c.
+
+20151010
+
+	Cleanup: the 20150903 workaround for AIX DNSSEC used the
+	wrong name in #ifdef. File: dns/dns.h.
+
+20151011
+
+	Cleanup: in the PCRE client, turn fatal lookup errors into
+	warnings, and skip the failing pattern as in dict_regexp.c.
+	Also, fixed the error text when running into the matcher's
+	backtracking limit. File: util/dict_pcre.c.
+
+20151017
+
+	Feature: smtpd_client_auth_rate_limit enforces a rate
+	limit on the number of AUTH commands per client IP address.
+	mantools/postlink, proto/postconf.proto, anvil/anvil.c,
+	global/anvil_clnt.c, global/anvil_clnt.h, global/mail_params.h,
+	smtpd/smtpd.c.
+
+20151018
+
+	Added RFC 7672 (SMTP security via opportunistic DANE TLS)
+	and RFC 7505 ("Null MX" No Service Resource Record) to the
+	lists of supported RFCs in manpages. Viktor Dukhovni. Files:
+	smtp/smtp.c, smtpd/smtpd.c.
+
+20151031
+
+	Bitrot: OpenSSL API cleanups. Viktor Dukhovni. Files:
+	.indent.pro, tls/tls.h, tls/tls_dane.c, tls/tls_fprint.c,
+	tls/tls_misc.c, tls/tls_server.c, tls/tls_verify.c.
+
+20151124
+
+	Bugfix (introduced: Postfix 3.0): don't throttle a destination
+	after opportunistic TLS failure. Viktor Dukhovni and Wietse.
+	Files: smtp/smtp_proto.c, smtp/smtp.h, smtp/smtp_trouble.c.
+
+20151128
+
+	Feature: JSON-formatted queue listing with "postqueue -j".
+	Output is a stream of JSON objects, one per queue file.  To
+	simplify stream-mode parsing, each JSON object is followed by
+	a newline character. Files: postqueue/postqueue.c,
+	postqueue/postqueue.h, postqueue/showq_compat.c,
+	postqueue/showq_json.c, showq/showq.c.
+
+20151216
+
+	Bugfix (introduced: 20151128) bogus queue file parsing error.
+	File: showq/showq.c.
+
+20151226
+
+	Cleanup: postlog(1) now pauses for 1s after reporting a
+	fatal or panic error. This makes behavior of scripts such
+	as postfix-script consistent with built-in error messages.
+	File: postlog/postlog.c.
+
+20151227
+
+	Robustness: don't allow for whitespace in command-line
+	arguments.  Files; postfix-install, conf/post-install.
+
+	Robustness: added a comment to discourage people who keep
+	adding code that calls gethostbyname() to determine the
+	default myhostname setting.  This is a mistake: all Postfix
+	programs will hang when the DNS is unavailable.  File:
+	global/mail_params.c.
+
+	Safety: a limit on the number of address verification probes
+	in the active queue (address_verify_pending_request_limit),
+	by default 1/4 of the active queue maximum size. The queue
+	manager tempfails probe messages that exceed the limit.
+	Files: mantools/postlink, proto/postconf.proto, cleanup/cleanup.h,
+	cleanup/cleanup_envelope.c, cleanup/cleanup_out_recipient.c,
+	cleanup/cleanup_state.c, global/mail_params.h, global/post_mail.c,
+	global/post_mail.h, global/verify.c, oqmgr/qmgr.c, oqmgr/qmgr.h,
+	oqmgr/qmgr_message.c, qmgr/qmgr.c, qmgr/qmgr.h,
+	qmgr/qmgr_message.c, verify/verify.c.
+
+20160102
+
+	Workaround: MacOS/X 10.11.x /bin/sh unsets DYLD_LIBRARY_PATH,
+	which breaks the build and install.  Viktor Dukhovni and
+	Wietse.  Files: makedefs, postfix-install, Makefile.in.
+
+	Bitrot: OpenSSL 1.1.0-dev drops support for EXPORT ciphers
+	and ephemeral RSA.  Viktor Dukhovni. Files: tls/tls_client.c,
+	tls/tls_rsa.c, tls/tls_server.c.
+
+	Bugfix: memory leak in tls_set_eecdh_curve(). Viktor Dukhovni.
+	File: tls/tls_dh.c.
+
+	Bugfix (introduced 20150326): when lmtp_fallback_relay
+	support was added, the code that generates lmtp_mumble
+	parameters from smtp_mumble parameters wasn't updated. File:
+	smtp/smtp-only.
+
+	Bugfix (introduced 20151017): the smtpd_client_auth_rate_limit
+	implementation was not guarded with #ifdef USE_SASL_AUTH.
+	File: smtpd/smtpd.c.
+
+20160103
+
+	Feature: enable DANE policies when an MX host has a secure
+	TLSA DNS record, even if the MX DNS record was obtained
+	with insecure lookups. The existence of a secure TLSA record
+	implies that the host wants to talk TLS and not plaintext.
+	This behavior is controlled with smtp_tls_dane_insecure_mx_policy
+	(default: "dane", other settings: "encrypt" and "may"; the
+	latter is backwards-compatible with earlier Postfix releases).
+	Viktor Dukhovni.  Files: mantools/postlink, proto/postconf.proto,
+	src/global/mail_params.h, src/posttls-finger/posttls-finger.c,
+	src/smtp/smtp-only, src/smtp/smtp.c, src/smtp/smtp.h,
+	src/smtp/smtp_addr.c, src/smtp/smtp_params.c,
+	src/smtp/smtp_tls_policy.c, src/tls/tls.h, src/tls/tls_client.c.
+
+20160104
+
+	Cleanup: distinct TLS levels for "full" DANE and for DANE
+	with insecure MX records.  Viktor Dukhovni. Files:
+	posttls-finger/posttls-finger.c, smtp/smtp_tls_policy.c,
+	tls/tls.h, tls/tls_client.c, tls/tls_level.c.
+
+20160108
+
+	Cleanup: smtp_reply_footer() now restores state in case of
+	input error; unit tests that cover most if not all error
+	and non-error cases.  Files: global/smtp_reply_footer.c,
+	global/smtp_reply_footer.ref.
+
+20160110
+
+	Bitrot: const-ification for OpenSSL 1.1.0. Viktor Dukhovni.
+	File: tls/tls_misc.c.
+
+20160116
+
+	"postconf -H" support (show names without the =value).
+	Initial use case: mass reversal of TLS-related main.cf
+	parameters (postconf -nH | grep _tls_ | xargs postconf -X).
+	This flag also works with "postconf -F" and "postconf -P".
+	Added missing documentation that -h works with "postconf
+	-F" and "postconf -P".  Files: postconf.c, postconf.h,
+	postconf_master.c, postconf_main.c.
+
+	Robustness: force html2text to produce ASCII output.  File:
+	mantools/html2readme.
+
+	Feature: "postfix tls" commands to enable opportunistic TLS
+	in the Postfix SMTP client or server, or generate or replace
+	Postfix SMTP server TLS private keys and server certificates.
+	Viktor Dukhovni, Wietse. Files: conf/postfix-files,
+	conf/postfix-script, conf/postfix-tls-script, makedefs,
+	proto/INSTALL.html, proto/postconf.proto, global/mail_params.h,
+	postfix/postfix.c, tls/tls_misc.c.
+
+	Portability: added a tls_random_source default setting for
+	MacOS X. Viktor Dukhovni. File: util/sys_defs.h.
+
+20160118
+
+	Bitrot: OpenSSL 1.1.0-dev (aka the "master" branch) has new
+	security levels ranging from 0 to 5. Level "0" is backwards
+	compatible, and other levels are increasingly restrictive.
+	Viktor Dukhovni. Files: tls/tls_server.c, tls/tls_client.c.
+
+20160205
+
+	Portability: Postfix TLS support uses /dev/urandom if
+	available and no system-specific setting exists in sys_defs.h.
+	Files: makedefs, util/sys_defs.h.
+
+20160208
+
+	Cleanup: building the INSTALL file had failed, added
+	hyperlinks for "postfix tls". Files: mantools/postlink.
+
+20160210
+
+	Feature: all-default-client and all-default-server subcommands.
+	Eray Aslan. File: conf/postfix-tls-script.
+
+	Bugfix: the postqueue(1) JSON formatter wrote a spurious
+	comma after the delay reason. Reported by Christian Roessner.
+	File: postqueue/showq_json.c.
+
+20160212
+
+	Cleanup: Bold/Italic cleanup in manpages.
+
+20160213
+
+	Added Google credits to external manpages.
+
+20160214
+
+	More manpage cleanups. Viktor, Wietse.
+
+20160215
+
+	Cleanup: "match_list_match: permit_mynetworks: no match" after
+	a SUCCESSFUL permit_mynetworks match of a client IP address was
+	complicating troubleshooting.  The fix is to log additional
+	context to clarify that this "no match" condition is for
+	smtpd_log_access_permit_actions. File: smtpd/smtpd_check.c.
+
+20160224
+
+	Cleanup: un-break some DNS unit tests by replacing non-portable
+	numerical flags with portable symbolic names in the verbose
+	command output.  Files: dns/dns_str_resflags.c, dns/dns_lookup.c,
+	dns/Makefile.in, many *.ref files.
+
+20160227
+
+	Cleanup: remember multiple BCC actions in access maps.
+	Files: smtpd/smtpd.h, smtpd/smtpd.c, smtpd/smtpd_check.c,
+	smtpd/smtpd_state.c, proto/access.
+
+20160228
+
+	Documentation: STRESS_README. File: proto/STRESS_README.html.
+
+20160229
+
+	Documentation: postmulti manpage. File: postmulti/postmulti.c.
+
+20160305
+
+	Future-proofing: detect integer overflow before it happens.
+	After-the-fact detection relies on assumptions about
+	undefined behavior that are invalidated by compilers.  Files:
+	util/mymalloc.c, util/vstring.c.
+
+20160310
+
+	Bugfix (introduced: Postfix 2.6): the Milter SMFIR_CHGFROM
+	(replace sender) request lost the sender_bcc_maps address.
+	Fixed by moving some record keeping to the sender output
+	function.  Files: cleanup/cleanup_envelope.c,
+	cleanup/cleanup_addr.c, cleanup/cleanup_milter.c,
+	cleanup/cleanup.h, regression tests.
+
+20160314
+
+	Future-proofing: revised off_t integer conversion (detect off_t
+	overflow before it happens).  After-the-fact detection relies
+	on assumptions about undefined behavior that are invalidated by
+	compilers. Files: global/off_cvt.c.
+
+	Cleanup: include <sys/types.h> once, instead of making it
+	system-dependent. File: util/sys_defs.h.
+
+	Cleanup: make sorting in "make depend" locale-independent.
+	Files: */Makefile.in.
+
+	Cleanup: postmulti manpage. File: postmulti/postmulti.c.
+
+20160319
+
+	Future-proofing: revised format-string width or precision integer
+	conversion (detect integer overflow before it happens), plus
+	some tests to ensure that format-string widths and precisions
+	are parsed correctly, and that output buffers are sized
+	correctly. Files: util/vbuf_print.c, util/vbuf_print_test.in,
+	util/vbuf_print_test.ref.
+
+20160320
+
+	Testing: exact-size VSTRING allocation. Files: util/vstring.[hc].
+
+	Cleanup: switch to snprintf() for redundancy, keeping
+	existing code in place to censor unnecessary format-string
+	features. Specify "make makefiles CCARGS=-DNO_SNPRINTF" for
+	ancient systems.  File: vbuf_print.c, makedefs, util/sys_defs.h,
+	proto/INSTALL.html.
+
+20160324
+
+	Future-proofing: revised netstring length integer conversion
+	(detect integer overflow before it happens).  File:
+	util/netstring.c.
+
+	Cleanup: report unsupported usage of '%ls' and '%lc' in
+	format strings.  File: util/vbuf_print.c.
+
+20160326
+
+	Future-proofing: regression test for global/off_cvt.c.
+	Files: global/off_cvt.in, global/off_cvt.ref.
+
+20160327
+
+	Cleanup: postconf(1) manpage. File: postconf/postconf.c.
+
+	Cleanup: un-broke regression tests. Files: dns/mxonly_test.ref,
+	dns/no-mx.ref, smtpd/smtpd_server.ref, smtpd/smtpd_server.in.
+
+	Added Postfix version information to the "postconf -m" manpage
+	section.  File: postconf/postconf.c.
+
+20160330
+
+	The collate.pl script by Viktor Dukhovni for grouping Postfix
+	logfile records into "sessions" based on queue ID and process
+	ID information. Files: auxiliary/collate/*.
+
+20160407
+
+	Treat SASL_FAIL and SASL_NOMEM as temporary errors.
+	Markus Benning. File: xsasl/xsasl_cyrus_server.c.
+
+20160410
+
+	Bugfix (introduced: Postfix 2.6): the "bad filetype"
+	header_checks pattern falsely rejected Content-Mumble headers
+	with ``name="example"; x-apple-part-url="example.com"''.
+	Fixed by respecting the ";" separator between content
+	attribute values.  Reported by Cedric Knight.  File:
+	proto/header_checks.
+
+20160515
+
+	Portability: OpenBSD 6.0. Files: makedefs, util/sys_defs.h,
+	dns/dns_str_resflags.c.
+
+20160521
+
+	Bugfix (introduced: Postfix beta): the never-used function
+	mvect_free() attempted to free memory that it has not
+	allocated.  File: util/mvect.c.
+
+	Cleanup: existing if/endif support for pcre and regexp
+	tables, in preparation for new if/endif support for cidr
+	tables. Files: util/dict_regexp.c, util/dict_pcre.c.
+
+20160526
+
+	Feature: cidr tables now support if/endif and negation (by
+	prepending "!" to a pattern), just like regexp and pcre
+	tables. The primarily purpose is to improve readability of
+	complex tables. Files: util/cidr_match.[hc], util/dict_cidr.c,
+	proto/cidr_table.
+
+	Cleanup: make regexp: and pcre: parser warning messages more
+	similar.  Files: dict_regexp.c, dict_pcre.c.
+
+20160601
+
+	Cleanup: moved parsing of '!' operators from cidr_match.c
+	to dict_cidr.c. Files: util/cidr_match.[hc], util/dict_cidr.c,
+	util/match_ops.c.
+
+20160604
+
+	Cleanup: made parsing of '!' operators in regexp and pcre
+	tables consistent with cidr tables. Files: util/dict_regexp.c,
+	util/dict_pcre.c.
+
+20160605
+
+	Cleanup: integer wrap-around detection in the MySQL and
+	PostgreSQL clients. This is totally non-critical because
+	Postfix strings are size-limited by design. Files:
+	global/dict_mysqql.c, global/dict_pgsql.c.
+
+20160607
+
+	Documentation: dnsblog.
+
+20160609
+
+	Documentation: postsuper(1) manpage text for multiple -[dhH]
+	options.  File: postsuper/postsuper.c.
+
+20160611
+
+	Cleanup: Postfix SMTP server local IP address and port
+	attributes in the policy delegation protocol (attribute
+	names: server_address, server_port), in the Milter protocol
+	(macro names: {daemon_addr}, {daemon_port}) and in the
+	XCLIENT protocol (attribute names: DESTADDR, DESTPORT).
+	Files: proto/MILTER_README.html, proto/SMTPD_POLICY_README.html,
+	cleanup/cleanup.h, cleanup/cleanup_milter.c, global/mail_proto.h,
+	milter/milter.h, smtpd/smtpd.c, smtpd/smtpd.h, smtpd/smtpd_check.c,
+	smtpd/smtpd_haproxy.c, smtpd/smtpd_milter.c, smtpd/smtpd_peer.c.
+
+20160612
+
+	Bugfix (introduced: 20090211): missing server address
+	conversion for non-proxy, non-postscreen connections.  File:
+	smtpd/smtpd_peer.c.
+
+	Bugfix (introduced: 20160611) missing server port conversion
+	for non-proxy, non-postscreen connections, because there was
+	no server address conversion.  File: smtpd/smtpd_peer.c.
+
+20160618
+
+	Bugfix (introduced: 20091121): with the introduction of
+	sender_dependent_default_transport_maps, the SMTP daemon
+	was not updated. This resulted in false rejects with
+	sender-dependent "error" transports. Based on a fix by
+	Russell Yanofsky.  Files: global/resolve_clnt.c,
+	global/resolve_clnt.h, smtpd/smtpd_check.c, smtpd/smtpd_check.h,
+	smtpd/smtpd_milter.c, smtpd/smtpd_resolve.c, smtpd/smtpd_resolve.h.
+
+20160619
+
+	Refinements to the 20160618 fix. For more consistent results
+	with sender address validation, use the recipient address
+	(if available) as the sender-dependent address resolver
+	context.  For better caching, pass sender context with all
+	attempts to resolve an email address.  File: smtpd/smtpd.c,
+	smtpd/smtpd_check.c, smtpd/smtpd_milter.c.
+
+20160625
+
+	Cleanup: the Postfix SMTP server now passes network address
+	and port information to the Cyrus SASL library. Build with
+	``make makefiles "CCARGS=$CCARGS -DNO_IP_CYRUS_SASL_AUTH"''
+	for backwards compatibility. Files: makedefs,
+	smtpd/smtpd_sasl_glue.c, xsasl/xsasl.h, xsasl/xsasl_cyrus_server.c,
+	xsasl/xsasl_server.c.
+
+	Cleanup: dnsblog manpage. File: dnsblog/dnsblog.c.
+
+20160717
+
+	Bugfix (introduced: Postfix 1.1): the virtual(8) delivery
+	agent discarded the error result from vstream_fseek().
+
+20160728
+
+	Bugfix (introduced: 20090614): with concurrent connections
+	from the same client IP address, and after-220 tests enabled,
+	postscreen could overwrite the cached "all tests completed"
+	result of one connection that completed the after-220 tests,
+	with the "some tests not completed" result of a concurrent
+	connection where the client hung up before completing the
+	after-220 tests.  Files: postscreen_misc.c, postscreen_state.c,
+	postscreen.h, postscreen_tests.c, postscreen.c, postscreen_smtpd.c,
+	postscreen_early.c.
+
+20160730
+
+	Cleanup: don't try to optimize away postscreen cache updates.
+	File: postscreen_misc.c.
+
+	Cleanup: removed compatibility crutches that emulated a
+	historical data organization from four years ago. Files:
+	postscreen/postscreen.[hc], postscreen/postscreen_early.c,
+	postscreen/postscreen_smtpd.c, postscreen/postscreen_tests.c.
+
+20160808
+
+	Cleanup: preserve the new file mtimes when installing Postfix.
+	Ondřej Lysoněk. File: postfix-install.
+	REVERTED 20160828.
+
+20160819
+
+	Bugfix (introduced: Postfix 3.0): the makedefs script ignored
+	readme_directory=pathname overrides. Fix by Todd C. Olson.
+	File: makedefs.
+
+20160821
+
+	Bugfix (introduced: Postfix 3.0): the tls_session_ticket_cipher
+	documentation says aes-256-cbc, but the implementation was
+	using aes-128-cbc (note that Postfix session ticket keys
+	are rotated after 1/2 hour, to limit the impact of attacks
+	on session ticket keys).
+
+20160828
+
+	Bitrot: fixes for incompatible OpenSSL 1.1.0 API changes.
+	Viktor Dukhovni. Files: posttls-finger/posttls-finger.c,
+	tls/tls.h, tls/tls_dane.c, tls/tls_verify.c, tls/tls_server.c,
+	tls/tls_client.c.
+
+	Cleanup: disable reuse of ECDH ephemeral keys. Viktor
+	Dukhovni.  File: tls/tls_misc.h.
+
+20160908
+
+	Documentation: add a pointer to hosts(5) and services(5)
+	for symbolic host and port syntax. File: proto/master.
+
+20160911
+
+	Bugfix (introduced: Postfix 3.0): the SMTP daemon did not
+	reset a previous session's command counts before rejecting
+	a client that exceeds request or concurrency rates. File:
+	smtpd/smtpd.c.
+
+20160912
+
+	Feature: preserve the new file mtimes when installing
+	Postfix.  Ondřej Lysoněk. Wietse made this conditional on
+	the presence of a new -keep-new-mtime flag. File: postfix-install.
+	[this flag was renamed to "-keep-build-mtime" on 20161126]
+
+20160917
+
+	Bugfix (introduced: Postfix 3.0): the unionmap did not
+	propagate table lookup errors.  Based on patch by Roel van
+	Meer.  Files: util/dict_union.c, util/dict_union_test.*.
+
+	Cleanup: added unit test for pipemap. Files: util/dict_pipe.c,
+	util/dict_pipe_test.*.
+
+	Documentation: added a note about the order of search
+	patterns and table lookup order. Files: proto/canonical,
+	proto/generic, proto/virtual.
+
+	Documentation: bitrot in postsuper(1) example. Different
+	groff versions produce different results; some systems no
+	longer support historical "tail -number" command syntax.
+	Fix by Geert Stappers. File: postsuper/postsuper.c.
+
+20160918
+
+	Logging: the Postfix SMTP server logs the sasl_username
+	after rejected SMTP commands.  As before, the SMTP server
+	does not forward SASL login information to other Postfix
+	subsystems, and it does not receive SASL login information
+	in XFORWARD commands. File/smtpd/smtpd.c.
+
+20160925
+
+	Bugfix (introduced: Postfix 2.11): changed the default MySQL
+	option_group value to "client" to enable the reading of
+	"client" option group settings in the MySQL option file.
+	This fixes false "not found" errors with Postfix queries
+	that contain UTF8-encoded text.  Fix by John Fawcett.
+	Specify an empty option_group value to get backwards-compatible
+	behavior. Files: global/dict_mysql.c, proto/mysql_table.
+
+20161007
+
+	Bitrot: API for the ersatz inet_ntop() function, when
+	compiling with -DNO_IPV6 (which exists only for debugging).
+	Files: util/sys_defs.h, util/sys_compat.c.
+
+20161008
+
+	Feature: smtp_tcp_port, similar to the existing lmtp_tcp_port.
+	Files: mantools/postlink, proto/postconf.proto,
+	global/mail_params.h, smtp/smtp.c, smtp/smtp_connect.c,
+	smtp/smtp_params.c.
+
+	Feature: "PASS" and "STRIP" actions in header/body_checks.
+	"STRIP" is similar to "IGNORE" but also logs the action,
+	and "PASS" disables header, body, and Milter inspection for
+	the remainder of the message content.  Contributed by Hobbit.
+	Files: cleanup/cleanup_message.c, global/header_body_checks.c.
+
+20161024
+
+	Feature: smtpd_milter_maps, per-client Milter configuration
+	that overrides smtpd_milters, and that has the same syntax.
+	Files: mantools/postlink, proto/MILTER_README.html,
+	proto/postconf.proto, global/mail_params.h, smtpd/smtpd.c,
+	smtpd/smtpd.h, smtpd/smtpd_sasl_proto.c, smtpd/smtpd_state.c.
+
+20161103
+
+	Cleanup: error reporting for IDNA (non-ASCII domain name)
+	conversion errors. File: util/midna_domain.c.
+
+	Cleanup: non-transitional conversion of UTF8 to/from ASCII
+	domain name labels used in DNS queries. This disables
+	'transitional' compatibility between IDNA2003 and IDNA2008,
+	and affects some corner cases such as German sz and Greek
+	zeta. Specify "enable_idna2003_compatibility = yes" to
+	restore historical behavior. Files: util/midna_domain.[hc],
+	mantools/postlink, global/mail_params.[hc], proto/postconf.proto,
+	proto/SMTPUTF8_README.html.
+
+20161105
+
+	Bugfix (introduced: Postfix 1.1): the postsuper command did
+	not count a successful rename operation after error recovery.
+	Problem reported by Markus Schönhaber. File: postsuper/postsuper.c.
+
+	Cleanup: error reporting for IDNA (non-ASCII domain name)
+	conversion errors, and enable_idna2003_compatibility
+	configuration. File: util/midna_domain.c.
+
+20161106
+
+	Documentation: specify the minimum ICU library version (4.6).
+	File: proto/SMTPUTF8_README.html.
+
+20161109
+
+	Portability: force LC_ALL=C in dict_utf8 test. This should
+	probably be in every shell script.
+
+20161120
+
+	Documentation: clarified the syntax of $name and ${name...}
+	in parameter values, and some wordsmithing. Files:
+	proto/postconf.html.prolog, proto/postconf.man.prolog.
+
+20161123
+
+	Documentation: clarified reject_non_fqdn_{sender,recipient}.
+	The syntax check applies only for domains that are actually
+	specified, not for missing domains. File: proto/postconf.proto.
+
+20161126
+
+	Cleanup: the postfix-install option "-keep-new-mtime" was
+	renamed to "-keep-build-mtime". File: postfix-install.
+
+	Feature: "make makefiles POSTFIX_INSTALL_OPTS=-keep-build-mtime"
+	to set the installed file mtimes to their build time instead
+	of their installation time. Based on code by Ondřej Lysoněk.
+	Wietse added a guard to prevent POSTFIX_INSTALL_OPTS from
+	passing arbitrary options.  Files: makedefs, Makefile.in,
+	proto/INSTALL.html.
+
+20161201
+
+	Documentation: add 'smtpd_tls_auth_only=yes' to the master.cf
+	submission service example. File: conf/master.cf.
+
+20161202
+
+	Documentation: typos in postconf(1) manpage. File:
+	postconf/postconf.c.
+
+20161204
+
+	Cleanup: properly report numerical conversion errors in
+	${{number} relational-operator ${number}}, and wordsmithing.
+	File: util/mac_expand.c.
+
+	Updated auxiliary/collate/collate.pl with Viktor's suggestion
+	in <98D25E24-EAB1-42BB-82FD-794F5DDD4E7F@dukhovni.org> for
+	better tracking of message flows.
+
+	Cleanup: remove tentative features that were implemented
+	before the DANE spec was finalized: support for certificate
+	usage PKIX-EE(1), the ability to disable digest agility
+	(Postfix now behaves as if "tls_dane_digest_agility = on"),
+	and the ability to disable support for "TLSA 2 [01] [12]"
+	records that specify the digest of a trust anchor (Postfix
+	now behaves as if "tls_dane_trust_anchor_digest_enable =
+	yes).  Viktor Dukhovni.  Files: mantools/postlink,
+	proto/postconf.proto, proto/TLS_README.html, tls/tls.h,
+	tls/tls_dane.c, smtp/smtp.c.
+
+	Bugfix (introduced: Postfix 3.1): cut-and-paste error in
+	the "postfix tls deploy-server-cert" command, causing the
+	wrong certfile and keyfile to be used. Viktor Dukhovni.
+	File: conf/postfix-tls-script.
+
+	Robustness: create a new keyfile when "postfix tls
+	new-server-cert" is invoked, and main.cf specifies a
+	non-existent keyfile. Viktor Dukhovni.  File:
+	conf/postfix-tls-script.
+
+20161205
+
+	Cleanup: log the sender address when rejecting a too large
+	message size in a "MAIL FROM:<sender> SIZE=nnn" command.
+	File: smtpd/smtpd.c.
+
+20161206
+
+	Bugfix (introduced: Postfix 3.0): when receiving a MAIL
+	FROM...SMTPUTF8 command while smtpd_delay_reject=no, enable
+	SMTPUTF8 support before processing smtpd_sender_restrictions.
+	Problem reported by Viktor Dukhovni. File: smtpd/smtpd.c.
+
+	Bugfix (introduced: Postfix 3.0): when receiving a
+	VRFY...SMTPUTF8 command, enable SMTPUTF8 support while
+	processing smtpd_recipient_restrictions. File: smtpd/smtpd.c.
+
+20161220
+
+	Bugfix (introduced: Postfix 2.1.0): the Postfix SMTP daemon
+	did not query sender_canonical_maps when rejecting unknown
+	senders with "smtpd_reject_unlisted_recipient = yes" or
+	with reject_unlisted_sender.  Stephen R. van den Berg (Mr.
+	procmail). Files: smtpd/smtpd.c, smtpd/smtpd_check.c.
+
+20161217
+
+	Enable elliptic curve negotiation with OpenSSL >= 1.0.2.
+	This changes the default smtpd_tls_eecdh_grade setting to
+	"auto", and introduces a new parameter tls_eecdh_auto_curves
+	with the names of curves that may be negotiated.  The default
+	tls_eecdh_auto_curves setting is determined at compile time,
+	and depends on the Postfix and OpenSSL versions.  At runtime,
+	Postfix will skip curve names that aren't supported by the
+	OpenSSL library.  Viktor Dukhovni.  Files: mantools/postlink,
+	proto/FORWARD_SECRECY_README.html, proto/TLS_README.html,
+	proto/postconf.proto, global/mail_params.h, smtpd/smtpd.c,
+	tls/tls.h, tls/tls_client.c, tls/tls_dh.c, tls/tls_misc.c,
+	tls/tls_server.c.
+
+	Feature: stored-procedure support for MySQL databases.
+	John Fawcett. Files: global/dict_mysql.c, proto/mysql_table.
+
+20161223
+
+	Bugfix (introduced: Postfix 3.2 snapshots): the makedefs
+	script produced a garbled CCARGS setting when no suitable
+	ICU library was found. File: makedefs.
+
+20161225
+
+	Cleanup: simplified handling of unsupported curve names in
+	the tls_eecdh_auto_curves parameter value.  File: tls/tls_dh.c.
+
+	Cleanup: simplified code structure in the MySQL client
+	support for stored procedures. File: global/dict_mysql.c.
+
+20161226
+
+	Cleanup: more MySQL client code simplification, better error
+	messages, new per-database "require_result_set" parameter
+	(default: yes) which can be set to "no" to avoid the need
+	for dummy SELECT statements in stored procedures.  Files:
+	global/dict_mysql.c, proto/mysql_table, postconf/postconf_dbms.c.
+
+	Portability: SSL_CTX_set_ecdh_auto() is part of the deprecated
+	OpenSSL API, so it must be used under #ifdef. Viktor Dukhovni.
+	File: src/tls/tls_dh.c.
+
+20161227
+
+	Safety: the sendmail -C option must specify an authorized
+	configuration directory: the default configuration directory,
+	a directory that is listed in the default main.cf file with
+	alternate_config_directories or multi_instance_directories,
+	or the command must be invoked with root priveleges.  This
+	mitigates a problem with the PHP mail() function.  Files:
+	global/mail_conf.[hc], sendmail/sendmail.c.
+
+20161228
+
+	Documentation: moved the "BACKWARDS COMPATIBILITY" sections
+	to the end of ldap_table, mysql_table, pgsql_table, and
+	sqlite_table, renamed to "OBSOLETE MAIN.CF PARAMETERS".
+
+20161231
+
+	Bugfix (introduced: 20160521): segfault (null pointer) in
+	cidr, pcre, and regexp table when an input does not match
+	an ENDIF-less IF operator.  Found during code maintenance.
+	File: util/cidr_map.c, util/dict_regexp.c, util/dict_pcre.c.
+
+20170101
+
+	Portability; SunOS5 builds broke after moving the sys/types.h
+	include statement to the top of sys_defs.h.
+
+	Portability: declaration after code is GNU dialect. File:
+	util/vbuf_print.c.
+
+	Portability: compatibility macros for SSLv23_client_method()
+	etc.  deprecation. Files: tls/tls.h, tls/tls_client.c,
+	tls/tls_dane.c, tls_server.c.
+
+201606-20170108
+
+	Cleanup: handling of address extensions with email addresses
+	that contain spaces. The virtual_alias_maps, canonical_maps,
+	and smtp_generic_maps features now correctly propagate an
+	address extension from "aa bb+ext"@example.com to "cc
+	dd+ext"@other.example, instead of producing broken output.
+
+	Files updated to support conversion between unquoted and
+	quoted address forms, as required for addresses that contain
+	spaces: global/mail_addr_map.*, global/mail_addr_find.* and
+	global/mail_addr_crunch.*.
+
+	Files updated to enable these address conversions to correctly
+	propagate address extensions: cleanup/cleanup_map11.c
+	(canonical_maps), cleanup/cleanup_map1n.c (virtual_alias_maps),
+	and smtp/smtp_generic.c (smtp_generic_maps).
+
+	Files updated to rename functions to better reflect their
+	input and output forms: global/split_addr.*, global/strip_addr.*.
+
+	Files updated to support quoted lookup keys: util/dict_inline.c,
+	util/dict_thash.c, postmap/postmap.c.
+
+	Files updated to invoke a backwards-compatible mail_addr_find()
+	version that disables quoted/unquoted address conversions:
+	smtp/smtp/smtp_sasl_glue.c (smtp_sasl_password_maps),
+	smtpd/smtpd_check.c (SMTP server address validation),
+	cleanup/cleanup_addr.c (sender_bcc_maps and recipient_bcc_maps),
+	virtual/mailbox.c (user-related table lookups),
+	trivial-rewrite/transport.c (transport_maps),
+	trivial-rewrite/resolve.c (sender_dependent_mumble_maps,
+	relocated_maps). These features may be migrated later to
+	enable quoted-form address lookup keys, for consistency
+	with other Postfix features.
+
+20170109
+
+	Cleanup: reduce the number of modified files relative to
+	the last regular release, to make a back-port more feasible.
+	This renames the new mail_addr_find() to mail_addr_find_opt(),
+	and renames the backwards_compatibility mail_addr_find_noconv()
+	to its old name mail_addr_find().  Added backwards-compatible
+	aliases {split,strip}_addr() for {split,strip}_addr_local().
+	To ensure correctness these edits were done mechanically,
+	and verified mechanically.
+
+20170111
+
+	Documentation: when (smtp|lmtp)_delivery_status_filter is
+	applied. File: proto/postconf.proto.
+
+20170114
+
+	Cleanup: careful handling of local-parts that contain '@',
+	as they are converted into quoted form.  Files:
+	global/mail_addr_find.*, global/quote_822_local.*,
+	global/quote_flags.*.
+
+	Cleanup: added unit tests for malformed inputs. Files:
+	util/dict_thash{in,ref}.
+
+	Cleanup: minimize the patch size of the quoting fixes, and
+	a preliminary back-port to Postfix 3.1.4.
+
+20170115
+
+	Cleanup: enable "externalized" address lookup by default,
+	with legacy-style "internalized" lookup for backwards
+	compatibility, for sender_bcc_maps, recipient_bcc_maps,
+	smtp_sasl_passwd_maps, smtpd_sender_login_maps, relocated_maps,
+	sender_dependent_mumble_maps, virtual_{mailbox,uid,gid}_maps.
+	File: global/mail_addr_find.c.
+
+	Cleanup: enable "externalized" address lookup by default,
+	with legacy-style "internalized" lookup for backwards
+	compatibility, for transport_maps. Files: global/mail_addr_find.*,
+	trivial-rewrite/transport.*.
+
+	Cleanup: mail_addr_find_() now has a configurable strategy
+	for full and partial address lookup, so that it may also
+	be used for localpart lookup in access maps.
+
+20170116:
+
+	Cleanup: parent domain matching is now implemented in the
+	mail_addr_find() engine. Simplified the transport_maps
+	lookup to just one mail_addr_find_() call. Files:
+	global/mail_addr_find.*, trivial-rewrite/transport.*.
+
+	Cleanup: enabled "externalized" address lookup by default,
+	with legacy-style "internalized" lookup for backwards
+	compatibility, for check_sender_access and check_recipient_access.
+	This now uses 'user@' lookup support in the mail_addr_find()
+	engine.  File: global/mail_addr_find.*, smtpd/smtpd_check.c.
+
+20170122
+
+	Cleanup: separated the database query form from the address
+	form that is input to mail_addr_find_() or mail_addr_map*(),
+	in attempt to make code more obviously correct. Files:
+	global/mail_addr_find.c, global/mail_addr_map.c.
+
+	Abandoned an experiment that used internal-form queries for
+	all maps, because it would be very difficult to test. The
+	tests inputs would have to compensate for multiple levels
+	of unquoting by postmap, C compilers, or shell interpreters.
+
+	Cleanup: moved the backwards-compatibility lookup strategy
+	(try the external address form first, then the internal
+	address form if it is different) inside the loop that
+	iterates over full and partial address forms. File:
+	global/mail_addr_find.c.
+
+20170125
+
+	Cleanup: mail_addr_find test scripting. Eliminate main.cf
+	dependencies, and allow all tests to run in one process.
+	Files: global/mail_addr_find.*
+
+20170127
+
+	Cleanup: mail_addr_find and mail_addr_form named constants.
+	Files: global/mail_addr_form.h, mail_addr_find.h, and
+	dependents.
+
+20170128
+
+	Cleanup: smtp_generic_maps implementation. Reduced the
+	number of internal<->external form address conversions,
+	added more rigorous tests, and eliminated the main.cf and
+	trivial-rewrite dependencies.  Files: smtp_map11.*.
+
+20170129
+
+	Cleanup: bogus UTC timezone setting for postqueue/mailq
+	command output, and other environment settings for root and
+	non-root users in set-gid programs. File: postqueue/postqueue.c
+	(enforce import_environment name=value overrides for root
+	users), util/msg_syslog_init.c (don't override non-existent
+	TZ settings with UTC), util/unsafe.c (exclude uid==0, euid==0
+	super-user from privilege escalation concerns).
+
+20170131
+
+	Cleanup: more complete VALGRIND coverage for test build targets
+	and scripts. Files: postalias/fail_test.in, postmap/fail_test.in,
+	postmap/quote_test.in, util/dict_pipe_test.in,
+	util/dict_union_test.in, util/dict_utf8_test.in.
+
+
+20170201
+
+	Portability: unsetenv() for ancient platforms. File:
+	makedefs, util/sys_compat.c.
+
+20170205
+
+	Cleanup: security checks for config_directory overrides.
+	File: global/mail_conf.c.
+
+	Cleanup: enforce import_environment name=value settings in
+	command-line utilities, for consistency with Postfix daemons (but
+	without removing environment variables).  This is not enforced
+	in the postconf command which must be able to process main.cf
+	files with incomplete settings. Files: postalias/postalias.c,
+	postcat/postcat.c, postkick/postkick.c, postlock/postlock.c,
+	postlog/postlog.c, postmap/postmap.c, postsuper/postsuper.c,
+	posttls-finger/posttls-finger.c, sendmail/sendmail.c,
+	util/clean_env.[hc].
+
+20170206
+
+	Bugfix (introduced: Postfix 3.0): check_mumble_a_access
+	did not handle [ipaddress], unlike check_mumble_mx_access.
+	When check_mumble_a_access was introduced, some condition
+	was not updated.  Reported by James (postfix_tracker). File:
+	smtpd/smtpd_check.c.
+
+20170207
+
+	Cleanup: rephrased paranoia precondition. File: global/mail_conf.c.
+
+20170211
+
+	Cleanup: rephrased paranoia precondition. File: util/unsafe.c.
+
+20170218
+
+	Cleanup: typofixes from klemens. The only change in compiled
+	code is in one identical mysql error message that also
+	appears in the pgsql client.  Files: about 50.
+
+20170221
+
+	Compatibility fix (introduced: Postfix 3.1): some Milter
+	applications do not recognize macros sent as {name} when macros
+	have single-character names. Postfix now sends such macros
+	without {} as it has done historically. Viktor Dukhovni. File:
+	milter/milter.c.
+
+20170228
+
+	Documentation: re-word scary warnings at the top of SASL_README
+	and TLS_README.
+
+20170402
+
+	Bugfix (introduced: Postfix 3.2): restore the SMTP server
+	receive override options at the end of an SMTP session,
+	after the options may have been modified by an smtpd_milter_maps
+	setting of "DISABLE". Problem report by Christian Rößner,
+	root cause analysis by Viktor Dukhovni. File: smtpd/smtpd.c.
+
+20170430
+
+	Safety net: append a null byte to vstring buffers, so that
+	C-style string operations won't scribble past the end. File:
+	vstring.[hc].
+
+20170505
+
+	Workaround for a current problem where some destination
+	announces primarily IPv6 MX addresses, the smtp_address_limit
+	eliminates most or all IPv4 addresses, and the destination
+	is not reachable over IPv6. This workaround is enabled with
+	"smtp_balance_mx_inet_protocols = yes", which is the default.
+	Files: smtp/smtp.c, smtp/smtp_params.c, smtp/smtp_addr.c,
+	global/mail_params.h, proto/postconf.proto.
+
+20170506
+
+	A last-minute cosmetic fix had introduced a bug in
+	smtp/smtp_addr.c.
+
+20170512
+
+	Bugfix (introduced: Postfix 2.0): the MIME nesting level
+	counter was not initialized (i.e. left at the memory fill
+	pattern 0xffffffff which equals -1). This broke unit tests
+	with a different memory allocator. Changing the value to
+	zero would break backwards compatibility (reject mail that
+	was previously not rejected). Files: global/mime_state.c.
+
+20170531
+
+	Bugfix (introduced: Postfix 3.2): after the table lookup
+	overhaul, the check_sender_access and check_recipient_access
+	features ignored the parent_domain_matches_subdomains
+	setting. Reported by Henrik Larsson. File: smtpd/smtpd_check.c.
+
+	Workaround (introduced: Postfix 3.2): mail_addr_find() logs
+	a warning that it does not support both parent-domain and
+	dot-parent-domain style lookups in the same call.  File:
+	global/mail_addr_find.c
+
+20170610
+
+	Workaround (introduced: Postfix 3.0 20140718): prevent MIME
+	downgrade of Postfix-generated message/delivery-status.
+	It's supposed to be 7bit, therefore quoted-printable encoding
+	is not expected. Problem reported by Griff. File:
+	bounce/bounce_notify_util.c.
+
+	Documentation: indicate that the transport_mumble parameters
+	are implemented by the queue manager, not by delivery agents.
+	Files: mantools/postlink, local/local.c, pipe/pipe.c,
+	*qmgr/qmgr.c, smtp/smtp.c, virtual/virtual.c.
+
+20170611
+
+	Security: Berkeley DB 2 and later try to read settings from
+	a file DB_CONFIG in the current directory.  This undocumented
+	feature may introduce undisclosed vulnerabilities resulting
+	in privilege escalation with Postfix set-gid programs
+	(postdrop, postqueue) before they chdir to the Postfix queue
+	directory, and with the postmap and postalias commands
+	depending on whether the user's current directory is writable
+	by other users. This fix does not change Postfix behavior
+	for Berkeley DB < 3, but reduces file create performance
+	for Berkeley DB 3 .. 4.6.  File: util/dict_db.c.
+
+20170617
+
+	Cleanup: the postconf command warns about unknown parameter
+	names in a database configuration file, specified as an
+	absolute pathname (for example, ldap:/path/to/file). This
+	code was mostly written in January 2017, and it still is a
+	partial implementation.  Files: postconf/postconf_dbms.c,
+	postconf/Makefile.in, postconf/test66.ref.
+
+20170618 
+
+	Cleanup: added missing "defined(__GLIBC__)" guards for
+	GLIBC version tests. File: util/sys_defs.h.
+
+20170620
+
+	Bugfix (introduced: Postfix 3.2) extension propagation was
+	broken with "recipient_delimiter = .". This change reverts
+	a change that was trying to be too clever. Files:
+	global/mail_adr_crunch.c, global/mail_addr_crunch.ref.
+
+20170704
+
+	Typos (introduced: Postfix 2.10): in comments about
+	IPv4-in-IPv6 addresses, replace :ffff::1.2.3.4 with the
+	correct form ::ffff:1.2.3.4. Incorrect or misleading comments
+	are worse than no comments. Files: smtpd/smtpd_haproxy.c,
+	postscreen/postscreen_haproxy.c.
+
+20170721
+
+	Bitrot: updated postconf LDAP database configuration check with
+	SASL and TLS-related parameters. Reported by Ralf Hildebrandt.
+	File: postconf/postconf_dbms.c.
+
+20170722
+
+	Cleanup: don't log the 'delay_dotcrlf' workaround for CISCO
+	PIX bugs before the smtp_pix_workaround_threshold_time has
+	passed. Reported by Ralf Hildebrandt. File: smtp/smtp_proto.c.
+
+20170727
+
+	Cleanup: the postconf command now uses mechanically-generated
+	lists of DBMS parameter names. This eliminates false positives
+	with mysql databases. Files: postconf/Makefile.in,
+	postconf/extract_cfg.sh, postconf/postconf_dbms.c.
+
+	Cleanup: removed `#if 0/#endif' dead code from dict_ldap.c,
+	to avoid spurious output from the extract_cfg.sh parameter name
+	extraction tool.
+
+20170728
+
+	Documentation: added warnings that "enable_original_recipient
+	= no" prevents Postfix <= 3.2 from saving the address
+	verification result under the original probe destination
+	address, if it is changed by aliasing or canonical mapping.
+	Files: proto/ADDRESS_VERIFICATION_README.html,
+	proto/postconf.proto.
+
+	Cleanup: don't store an empty address in the verify cache
+	(this could happen with "enable_original_recipient = no").
+	File: global/verify.c.
+
+20170729
+
+	Cleanup: the setting "enable_original_recipient = no" no
+	longer breaks address verification for aliased addresses.
+	This does not change the behavior of the X-Original-To
+	header and of recipient deduplication. The fix is to always
+	store the original recipient in queue files. Some other
+	changes were needed to move ownership of the var_enable_orcpt
+	parameter from the cleanup daemon to the global library.
+	Files: cleanup/cleanup_init.c, cleanup/cleanup_milter.c,
+	cleanup_out_recipient.c, global/mail_params.c, global/mail_copy.c,
+	proto/postconf.proto proto/ADDRESS_VERIFICATION_README.html,
+	local/local.c, virtual/virtual.c, pipe/pipe.c.
+
+20170730
+
+	Bugfix (introduced: yesterday): revert global/verify.c code
+	to always store the verify result under the original address,
+	and to conditionally store it under the rewritten address.
+	File: global/verify.c.
+
+20170827
+
+	Safety: in vstream_buf_space(), add a sanity check to reject
+	negative request sizes, instead of letting the program fail
+	later. File: util/vstream.c
+
+	Bugfix: in tests that enable the VSTRING_FLAG_EXACT flag,
+	vstring_buf_put_ready() could fail to extend the buffer,
+	causing infinite recursion in VBUF_PUT(). File: util/vstring.c.
+
+20170830
+
+	Bugfix: in vbuf_print(), save the parser-produced format
+	string before calling msg_panic(), so that the panic message
+	will not display its own format string. File: util/vbuf_print.c.
+
+20170831
+
+	Undefined behavior (introduced Postfix 1.0): after subtracting
+	a larger unsigned integer from a smaller one, do not assign
+	the result to a signed integer. File: postqueue/showq_compat.c.
+
+20170910
+
+	Safety: restore sanity checks for dynamically-specified
+	width and precision in format strings (%*, %.*, and %*.*).
+	These checks were lost with the Postfix 3.2 rewrite of
+	the vbuf_print formatter. File: vbuf_print.c.
+
+	Bugfix (introduced: postfix-alpha): improve the 'fatal:
+	invalid option' message to show the optopt value instead of
+	the getopt() result.  Files: master/*server.c.
+
+20170923
+
+	Bugfix (introduced: Postfix 3.2): panic in the postqueue
+	command after output write error while listing the queue.
+	This change restores a write error check that was lost with
+	the Postfix 3.2 rewrite of the vbuf_print formatter.
+	Problem reported by Andreas Schulze. File: util/vbuf_print.c.
+
+20170924
+
+	Cleanup: terminate early after output write error. Files:
+	showq/show_compat.c, showq/show_json.c.
+
+20171009
+
+	Bugfix (introduced: Postfix 3.1): DANE support. Postfix
+	builds with OpenSSL 1.0.0 or 1.0.1 failed to send email to
+	some sites with "TLSA 2 X X" records associated with an
+	intermediate CA certificate. Problem report and initial
+	fix by Erwan Legrand. File: src/tls/tls_dane.c.
+
+20171024
+
+	Bugfix (introduced: Postfix 3.0) missing dynamicmaps support
+	in the Postfix sendmail command broke authorized_submit_users
+	with a dynamically-loaded map type. File: sendmail/sendmail.c.
+
+20171116
+
+	Bugfix (introduced: Postfix 2.1): don't log warnings 
+	that some restriction returns OK, when the access map
+	DISCARD feature is in effect. File: smtpd/smtpd_check.c.
+
+20171209
+
+	Documentation: the effects of owner_request_special and
+	reset_owner_alias on alias expansion. Files: proto/aliases,
+	proto/postconf.proto.
+
+20171215
+
+	Bugfix (introduced: 20170611): the DB_CONFIG bugfix broke
+	Berkeley DB configurations with a relative pathname.  File:
+	util/dict_db.c.
+
+20171218
+
+	Workaround: reportedly, some res_query(3) implementation
+	can return -1 with h_errno==0. Instead of terminating with
+	a panic, the Postfix DNS client now logs a warning and sets
+	h_errno to TRY_AGAIN. File: dns/dns_lookup.c.
+
+	Cleanup: allow XCLIENT before STARTTLS, when TLS is required.
+	File: smtpd/smtpd.c.
+
+20171219
+
+	Feature: preliminary support to run Postfix in the foreground.
+	This requires that multi-instance support is disabled.
+	Files: conf/postfix-script, postfix/postfix.c.
+
+20171223
+
+	Feature: Milters can now send RET and ENVID arguments in
+	SMFIR_CHGFROM requests. Files: cleanup/Makefile.in,
+	cleanup/cleanup.h, cleanup/cleanup_envelope.c,
+	cleanup/cleanup_milter.c, cleanup/cleanup_milter.in13h,
+	cleanup/cleanup_milter.in13i, cleanup/cleanup_milter.ref13c,
+	cleanup/cleanup_milter.ref13d, cleanup/cleanup_milter.ref13f,
+	cleanup/cleanup_milter.ref13g, cleanup/cleanup_milter.ref13h,
+	cleanup/cleanup_milter.ref13i, cleanup/cleanup_state.c,
+	cleanup/test-queue-file13h, cleanup/test-queue-file13i,
+	oqmgr/qmgr_message.c, qmgr/qmgr_message.c.
+
+20171226
+
+	Documentation patches by Sven Neuhaus. Files:
+	proto/FORWARD_SECRECY_README.html, proto/MILTER_README.html,
+	proto/SMTPD_ACCESS_README.html.
+
+20171227
+
+	Feature: postgresql:// URI support by Magosányi Árpád.
+	Files: global/dict_pgsql.c, proto/pgsql_table.
+
+	Cleanup: added employer attributions for non-trivial changes
+	after Wietse changed employers.
+
+20180106
+
+	Compatibility: with compatibility_level < 1, the SMTP server
+	now warns for mail that would be blocked by the Postfix
+	2.10 smtpd_relay_restrictions feature. This extends the
+	safety net for sites that upgrade from earlier Postfix
+	versions (questions on the postfix-users list show a steady
+	trickle). Files: proto/COMPATIBILITY_README.html,
+	global/mail_params[hc], smtpd/smtpd_check.c.
+
+	Cleanup: reset compatibility_level warnings after 'postfix
+	reload'. This is relevant primarily for the master daemon.
+	File: global/mail_params.c.
+
+	Cleanup: missing mailbox seek-to-end error check in the
+	local(8) delivery agent. File: local/mailbox.c.
+
+	Cleanup: incorrect mailbox seek-to-end error message in the
+	virtual(8) delivery agent. File: virtual/mailbox.c.
+
+20180107
+
+	Cleanup: Postfix-generated From: headers with 'full name'
+	information are now formatted as "From: name <address>" by
+	default. Specify "header_from_format = obsolete" for the
+	earlier form "From: address (name)". Files: proto/postconf.proto,
+	cleanup/cleanup.h, cleanup_init.c, cleanup_message.c,
+	mail_params.h.
+
+20180113
+
+	Bugfix: "postconf -M" commands did not warn about unused
+	name=value settings in master.cf. File: postconf/postconf.c.
+
+	Bugfix: "postconf -xM" now expands $process_name using the
+	daemon file name in master.cf, instead of the "postconf"
+	command process name. Files: postconf/postconf.h,
+	postconf/postconf_lookup.c, postconf/postconf_master.c.
+
+	Feature: read-only service_name parameter that contains the
+	master.cf service name. This allows, for example, setting
+	the syslog_name with "-o syslog_name=postfix/$service_name"
+	for the "submission" and "smtps" services. Files:
+	proto/postconf.proto global/mail_params.h, global/mail_params.c,
+	master/single_server.c, master/multi_server.c,
+	master/trigger_server.c, master/event_server.c,
+	postconf/postconf_master.c, postconf/postconf_builtin.c,
+	and daemon manpages.
+
+20180114
+
+	Paranoia: censor the postqueue process name, similar to the
+	set-gid postdrop program. File: postqueue/postqueue.c.
+
+	Cleanup: the new "service_name" parameter is applicable
+	only to Postfix daemons configured in master.cf; hyperlink
+	the parameter name in documentation.  Files: proto/postconf.proto,
+	mantools/postlink, daemon manpages.
+
+	Cleanup: allow whitespace between $[{(], parameter name,
+	and [:?)}]. This allows making complex expressions more
+	readable with line breaks. File: util/mac_expand.c.
+
+	Cleanup: don't initialize the service_name parameter with
+	the process_name value.  Files: postconf/postconf.[hc],
+	postconf/postconf_builtin.c.
+
+20180121
+
+	Bugfix (introduced: 20180106): too many arguments for format
+	string. File: local/mailbox.c.
+
+20180128
+
+	Documentation: the tcp_table(5) manpage now documents the
+	absence of substring lookups. File: proto/tcp_table.
+
+20180203
+
+	Licence: in addition to the historical IBM Public License
+	1.0, this software is now also distributed with the more
+	recent Eclipse Public License 2.0. Recipients can choose
+	to take the software under the license of their choice.
+	Those who are more comfortable with the IPL can continue
+	with that license. File: LICENSE.
+
+20180217
+
+	Cleanup: added 22 missing *_maps parameters to the default
+	proxy_read_maps setting. Files: global/mail_params.h,
+	mantools/missing-proxy-read-maps.
+
+20180218
+
+	Cleanup: back-ported the missing-proxy-read-maps script to
+	older Postfix releases, and added error checks. Undid some
+	of the 20180217 changes in mail_params.h that are no longer
+	needed.
+
+	Bugfix (introduced: 20120117): postconf should scan only
+	built-in or service-defined parameters for ldap, *sql, etc.
+	database names. Problem reported by Christian Rößner. Files:
+	postconf/postconf_user.c.
+
+20180224
+
+	Workaround: postconf build did not abort if the m4 command
+	is not installed (on a system that does have the make command,
+	the awk command, the perl command, and the C compiler?!).
+	File: postconf/extract_cfg.sh.
+
+20180303
+
+	Portability: slight differences between MySQL and MariaDB.
+	Olli Hauer. File: global/dict_mysql.c.
+
+20180306
+
+	Bugfix (introduced: 19990302): when luser_relay specifies
+	a non-existent local address, the luser_relay feature becomes
+	a black hole. Reported by Jørgen Thomsen. File: local/unknown.c.
+
+	Portability: FreeBSD 11 is supported. Files: makedefs,
+	util/sys_defs.h.
+
+20180403
+
+	Containers: "postfix start-fg" will now attempt to run the
+	master daemon as PID 1, and "postfix stop" will use a
+	stronger signal if the master does not stop. Files:
+	conf/postfix-script, master/master.c, master/master_sig.c,
+	postfix/postfix.c.
+
+20180404
+
+	Containers: "postfix start-fg" running as PID=1 will now 
+	properly terminate after "postfix stop". With assistance
+	from Andreas Schulze and Eray Aslan. Files: master/master.c,
+	master/master.h, master/master_sig.c.
+
+20180421
+
+	Documentation: in the protocol description mention early
+	on that a policy server must not close the connection unless
+	there is an error. File: proto/SMTPD_POLICY_README.html.
+
+20180422
+
+	Undocumented: when running in PID=1 mode on Linux, a signal
+	won't be delivered unless the process specifies a handler.
+	Conveniently, _exit() can be used directly as a signal
+	handler. This changes the wait status that a parent would
+	see, but in the case of PID=1 mode on Linux, no-one would
+	care. Viktor Dukhovni. File: util/killme_after.c.
+
+	Bugfix (introduced: Postfix 2.8): missing tls_server_start()
+	error propagation in tlsproxy(8) resulting in segfault after
+	TLS handshake error. Found during code maintenance. File:
+	tlsproxy/tlsproxy.c.
+
+	Connection reuse for TLS-encrypted SMTP sessions. This is
+	work-in-progress, #ifdef USE_TLSPROXY, to avoid contamination
+	of existing code.
+
+	The idea is to have smtp(8) talk plaintext while tlsproxy(8)
+	converts between local plaintext and remote ciphertext.
+	Then, smtp(8) can save plaintext connections to the cache,
+	and scache(8) holds the handles to the tlsproxy(8) processes.
+
+	This preliminary implementation does not yet support proxying
+	of DANE attributes from smtp(8) to tlsproxy(8). tlsproxy(8)
+	does not have permissions to read private key files that
+	smtp(8) can read. And the name of a connection cache entry
+	does not yet depend on whether the cached connection uses
+	TLS, nor does it depend on DANE information.
+
+	Files: global/mail_proto.h, postscreen/postscreen_starttls.c,
+	posttls-finger/posttls-finger.c, smtp/smtp.c, smtp/smtp.h,
+	smtp/smtp_params.c, smtp/smtp_proto.c, smtp/smtp_session.c,
+	smtpd/smtpd.c, tls/tls.h, tls/tls_client.c, tls/tls_proxy.h,
+	tls/tls_proxy_client_init_print.c,
+	tls/tls_proxy_client_init_scan.c,
+	tls/tls_proxy_client_start_print.c,
+	tls/tls_proxy_client_start_scan.c, tls/tls_proxy_clnt.c,
+	tls/tls_proxy_context_print.c, tls/tls_proxy_context_scan.c,
+	tls/tls_proxy_server_init_print.c,
+	tls/tls_proxy_server_init_scan.c,
+	tls/tls_proxy_server_start_print.c,
+	tls/tls_proxy_server_start_scan.c, tlsproxy/tlsproxy.c,
+	tlsproxy/tlsproxy.h, tlsproxy/tlsproxy_state.c, util/argv_attr.h,
+	util/argv_attr_print.c, util/argv_attr_scan.c.
+
+20180425
+
+	Cleanup: dnsblog proccesses now retire voluntarily after 
+	max_use*max_idle seconds. Files: master/mail_server.h,
+	master/single_server.c, dnsblog/dnsblog.c.
+
+20180429
+
+	Documentation: smtpd_relay_restrictions was incorrectly
+	listed before smtpd_recipient_restrictions. File:
+	proto/SMTPD_ACCESS_README.html.
+
+20180509
+
+	Bugfix (introduced: 20170617): postconf(1) command segfault
+	if unable to open a Postfix database configuration file due
+	to a file permission error. Report by Andreas Hasenack, fix
+	by Viktor Dukhovni.  File: postconf/postconf_dbms.c.
+
+20180519
+
+	Documentation: updated descriptions of PID 1 mode in manpages
+	and source-code comments. Files: postfix/postfix.c,
+	master/master.c, master/master_sig.c, util/killme_after.c.
+
+	Documentation: document non-iterative lookup behavior
+	in postmap(1) and postalias(1) manpages. Files: postmap/postmap.c,
+	postalias/postalias.c.
+
+	Cleanup: the init-mode change should not forbid the combined
+	use of -D, -d and -w. File: master/master.c.
+
+20180520
+
+	Documentation: add backscatter remediation to the virtual(5)
+	and canonical(5) manpages. Files: proto/virtual, proto/canonical.
+
+	Bugfix (introduced: 20180425): broken implementation of
+	voluntary dnsblog retirement after max_use*max_idle seconds.
+	File: master/single_server.c.
+
+20180531
+
+	Documentation: bash syntax to eliminate or view default
+	settings in "postconf -n" output. File: postconf/postconf.c.
+	Contributed by various postfix-users list members.
+
+20180603
+
+	TLS reuse: serializer/deserializer support for TLS_DANE and
+	related data structures. Files: tls/tls_proxy_client_print.c,
+	tls/tls_proxy_client_scan.c, tls/tls_proxy.h, util/argv_attr.h,
+	util/argv_attr_print.c, util/argv_attr_scan.c.
+
+	TLS reuse: posttls-finger -X test flag for quick tests.
+	File: posttls-finger/posttls-finger.c.
+
+	TLS reuse: smtp_use_tlsproxy boolean parameter. This is a
+	preliminary implementation that should support override via
+	smtp_tls_policy_maps. Files: smtp.c, smtp_connect.c,
+	smtp_params.c, smtp_proto.c, smtp_session.c.
+
+	TLS reuse: the SMTP client now includes the requested TLS
+	security level in the scache(8) key.
+
+	TLS reuse: address-based reuse is allowed only for TLS
+	levels that require no certificate checks. Perhaps it still
+	makes sense to save such sessions for reuse by less sensitive
+	deliveries. Files: smtp/smtp.h smtp/smtp_reuse.c.
+
+20180604
+
+	TLS reuse: smtp_tls_connection_reuse boolean parameter, and
+	corresponding override with "connection_reuse" boolean
+	attribute in smtp_policy_maps. Files: global/mail_params.h,
+	smtp.c, smtp.h, smtp_params.c, smtp_proto.c, smtp_session.c,
+	smtp_tls_policy.c. proto/postconf.proto. mantools/postlink.
+
+20180605
+
+	TLS reuse: updated TLS_README and CONNECTION_CACHE_README,
+	added comments in tlsproxy.c to explain why it works.
+
+20180617
+
+	Bugfix (introduced: Postfix 2.11): minor memory leak when
+	minting issuer certs. This affects a tiny minority of use
+	cases. Fix by Viktor Dukhovni, based on a fix by Juan
+	Altmayer Pizzorno for Viktor's ssl_dane library.
+
+	Cleanup: support for longer timeouts after the TLS handshake,
+	so that the tlsproxy server won't time out too soon, while
+	the SMTP client waits for the end-of-data response. This
+	tlxproxy timeout is a redundant safety feature for the case
+	that the SMTP client does not enforce the SMTP-level time
+	limit.  Files: tls/tls_proxy.h, tls/tls_proxy_clnt.c,
+	tlsproxy/tlsproxy.c, posttls-finger/posttls-finger.c,
+	postcreen/postscreen_starttls.c, smtp/smtp_proto.c.
+
+	Cleanup: earlier purging of unexpected plaintext. Files:
+	posttls-finger/posttls-finger.c, smtp/smtp_proto.c.
+
+	Release: first production snapshot with multiple outbound
+	deliveries per TLS-encrypted connection.
+
+20180618
+
+	Quick tlsproxy workaround: after the remote TLS peer shuts
+	down TLS, allow unsent inbound plaintext to trickle out
+	before tearing down the proxied connection.  This addresses
+	a sporadic "lost connection after end-of-data" error in the
+	Postfix SMTP client, and addresses a sporadic "lost connection
+	after sending QUIT" error with "posttls-finger -X". File:
+	tlsproxy/tlsproxy.c.
+
+20180619
+
+	Segfault: don't lookup the TLS security level for nexthop-based
+	connection cache storage keys. The combination of (service,
+	nexthop, etc.) should be stable enough over the time range
+	of interest, and the policy is still enforced on an individual
+	connection to an MX host, before that connection is stored
+	under a nexthop- or host-based storage key. Files:
+	smtp/smtp_connect.c, smtp/smtp.h.
+
+20180620
+
+	TLS connection reuse: save and restore the TLS level for a
+	reused connection, so that the reused connection will be
+	saved under a key that matches the connection's original
+	TLS level. This was not a problem for destinations that
+	require certificate verification, because we currently reuse
+	connections that require certificate checks only if they
+	are looked up by their nexthop destination. File:
+	smtp/smtp_session.c.
+
+	TLS connection reuse: with TLS level > encrypt, prohibit
+	sharing of the same connection endpoint under different
+	nexthops, by making the nexthop part of the endpoint-based
+	connection cache lookup key. File: smtp/smtp.h.
+
+20180623
+
+	TLS connection reuse: replaced random logic with TLS_MUST_MATCH()
+	when deciding under what conditions an authenticated
+	connection may be reused.  Files: smtp/smtp_proto.c,
+	smtp/smtp.h.
+
+	TLS connection reuse: a tlsproxy(8) process will retire
+	after max_idle*max_use, or some sane constant if either is
+	set to zero.  Files: master/event_server.c, tlsproxy/tlsproxy.c.
+
+	Documentation: automatic retirement. File: master/single_server.c.
+
+	Documentation: the connection caching limitation for SMTP
+	over TLS is now obsolete. File: proto/CONNECTION_CACHE_README.html.
+
+20180701
+
+	Incompatibility: the tlsproxy(8) daemon now requires a zero
+	process limit in master.cf (this setting is provided with
+	the default master.cf file). See RELEASE_NOTES for how to
+	change the tlsproxy process limit. File: tlsproxy/tlsproxy.c.
+
+20180707
+
+	Bugfix (introduced: Postfix 3.0): with smtputf8_enable=yes,
+	table lookups could casefold the search string when searching
+	a lookup table that does not use fixed-string keys (regexp,
+	pcre, tcp, etc.). Historically, Postfix would not case-fold
+	the search string with such tables. File: util/dict_utf8.c.
+
+	Cleanup: removed unimplemented VSTRING support to enforce
+	a buffer size limit (by returning an error of sorts). In
+	practice, the limit was enforced in smtp_get(). Also made
+	the VSTRING inplementation more VSTREAM-compatible. Files:
+	util/vstring.[hc], posttls-finger/posttls-finger.c,
+	smtpstone/smtp-source.c.
+
+	Cleanup: unused variable. File: postqueue/postqueue.c.
+
+	Feature: VSTREAM support to "open" a VSTRING for read, write
+	or append mode, enabling the reuse of existing stream-based
+	code to serialize/deserialize Postfix data structures to/from
+	memory. File: vstream.[hc].
+
+	Cleanup: "make manpages" now generates a makedefs(1) manpage
+	for publication on the web. Also cleaned up some makedefs(1)
+	content. Files: man/Makefile.in, man/man1/makedefs.1,
+	html/Makefile.in, html/makedefs.1.html.
+
+20180708
+
+	Cleanup: VSTREAM support to "open" a VSTRING: added
+	vstream_ftell() support; documented what changes are needed
+	before this can support vstream_fseek(), without breaking a
+	VSTRING during vstream_fflush(); added a simple 'allow'
+	filter for vstream_control() requests; added a unit test.
+	File: util/vstream.c.
+
+20180812
+
+	Feature: smtpd_reject_footer_maps (as well as the postscreen
+	variant postscreen_reject_footer_maps). This is indexed
+	with the SMTP server response text, and overrides the footer
+	specified with smtpd_reject_footer. Files: global/mail_params.h,
+	mantools/postlink, postscreen/postscreen.c,
+	postscreen/postscreen_send.c, postscreen/postscreen_smtpd.c,
+	proto/postconf.proto, smtpd/smtpd.c, smtpd/smtpd_chat.c.
+
+	Minor wordsmithing. File: makedefs.
+
+20180823
+
+	Bugfix (introduced: 20180812): postscreen_send.c did not
+	build without warnings. Viktor Dukhovni.
+
+20180824
+
+	Cleanup: with SMTPUTF8 turned off, the MySQL and PgSQL maps
+	accept only well-formed UTF-8 queries, and return NOT FOUND
+	otherwise. This was in introduced in Postfix 3.0 for LDAP
+	and SQLite, with no complaints coming forth. Files:
+	global/dict_mysql.c, global/dict_pgsql.c.
+
+20180805-20180825 Chunking support
+
+	Cleanup: vbuf_get() now sets the EOF flag, so that reading
+	from a VSTRING stream works as expected. File: util/vbuf.c.
+
+	Cleanup: added an append-mode flag to functions that read
+	a VSTRING from a stream. The historical APIs are preserved
+	in the form of aliases. Files: util/vstring_vstream.[hc],
+	global/smtp_stream.[hc].
+
+	SMTP server support for CHUNKING (BDAT) per RFC 3030. The
+	SMTP server is the only program that knows the difference
+	between mail received with BDAT or DATA. Both use the same
+	smtpd_data_restrictions and smtpd_end_of_data_restrictions,
+	both send one Milter DATA event per mail transaction, and
+	both send one DATA command ending in <CR><LF>.<CR><LF>
+	to an smtpd_proxy_filter. Files: global/ehlo_mask.h,
+	global/smtp_stream.c, global/smtp_stream.c, global/smtp_stream.h,
+	postscreen/postscreen_smtpd.c, smtpd/smtpd.c, smtpd/smtpd.h,
+	smtpd/smtpd_chat.c, smtpd/smtpd_chat.h, smtpd/smtpd_state.c.
+
+	Cleanup: the postscreen(8) daemon now hangs up after receiving
+	the DATA command. Justification: it should never receive DATA
+	from a legitimate client, because 1) postscreen(8) rejects all
+	recipients, and 2) postscreen(8) does not announce PIPELINING.
+	This makes postscreen(8) DATA and BDAT behavior more
+	consistent. File: postscreen/postscreen_smtpd.c.
+
+	BDAT final touches: report accurate BDAT byte counts after
+	timeout or lost connection; send DATA instead of BDAT in
+	policy delegation protocol. Files: smtpd/smtpd.[hc],
+	smtpd/smtpd_check.c.
+
+	BDAT final touches: if the BDAT EHLO announcement is disabled,
+	then smtpd(8) and postscreen(8) will not accept BDAT commands.
+	Files: smtpd/smtpd.c, postscreen/postscreen_smtpd.c.
+
+20180826
+
+	Cleanup: with GSSAPI, the Postfix SMTP client's initial
+	SASL response may be as large as 12288 bytes. When the "AUTH
+	<method> <initial-response>" command would exceed the SMTP
+	command length of 512 bytes, send the initial response
+	during the SASL dialog. Viktor Dukhovni. File:
+	smtp/smtp_sasl_glue.c.
+
+	Cleanup: prepare the Postfix SMTP server needs to receive
+	SASL responses that exceed the line_length_limit value.
+	This introduces a new parameter smtpd_sasl_response_limit
+	(default: 12288). Viktor Dukhovni.  Files: mantools/postlink,
+	proto/postconf.proto, global/mail_params.h, smtpd/smtpd.c,
+	smtpd/smtpd_chat.c, smtpd/smtpd_chat.h, smtpd/smtpd_sasl_glue.c.
+
+20180827
+
+	Miscellaneous documentation updates, and a correction in
+	the byte count for sending a large SASL initial response.
+
+20181014
+
+	Cleanup: figured out why vstring_get() did not return
+	VSTREAM_EOF in APPEND mode. File: util/vstring_vstream.c.
+
+20180903
+
+	Bugfix (introduced: 20180825): postscreen falsely claimed
+	that the remote SMTP client was pipelining after sending
+	BDAT. Found by Ralf Hildebrandt. File:
+	postscreen/postscreen_smtpd.c.
+
+20180904
+
+	Bugfix (introduced: 20180812): parameter name error
+	(postscreen_reject_footer should have been
+	postscreen_reject_footer_maps). Noel Jones (finder) and
+	Viktor Dukhovni (fixer).
+
+20181104
+
+	Multiple 'bit rot' fixes for OpenSSL API changes, including
+	support to disable TLSv1.3, to avoid issuing multiple session
+	tickets, and to allow OpenSSL >= 1.1.0 run-time micro version
+	bumps without complaining about library version mismatches.
+	Viktor Dukhovni. Files: proto/postconf.proto,
+	proto/TLS_README.html, tls/tls.h, tls/tls_dane.c,
+	tls/tls_server.c, tls/tls_misc.c
+
+20181105
+
+	Feature: "postmap -F" reads a source file with (key, filename)
+	entries, and creates database records with (key, base64-encoded
+	filecontent). This feature will be used for SNI lookup
+	table support, where each key will be a domainname, and
+	each value will contain a sequence of (private key, certificate
+	hierarchy) for that domainname. The same 'value is filename'
+	behavior is implemented in cidr:, inline:, pcre:, randmap:,
+	regexp:, and static: maps if the application sets the flag
+	DICT_FLAG_RHS_IS_FILE. In the forseeable future, this will
+	be used for specific TLS features. Files: postmap/postmap.c,
+	util/dict.c, util/dict.h, util/dict_cidr.c, util/dict_file.c,
+	util/dict_inline.c, util/dict_pcre.c, util/dict_random.c,
+	util/dict_regexp.c, util/dict_static.c.
+
+20181106
+
+	Bugfix (introduced: 3.0): smtpd_discard_ehlo_keywords could
+	not disable "SMTPUTF8". because the lookup table was using
+	"EHLO_MASK_SMTPUTF8" instead. File: global/ehlo_mask.c.
+
+	Documentation: the postmap(1) manpage no longer refers to
+	compatibility with Sendmail's makemap command. File:
+	postmap/postmap.c.
+
+	Cleanup: don't use ssize_t for boolean result. File:
+	global/smtp_stream.c.
+
+	Cleanup: memory leak caused by missing dbenv->close() call
+	after failing to open a Berkeley DB table. File: util/dict_db.c.
+
+20181112
+
+	Improved logging of TLS 1.3 summary information, and improved
+	reporting of the same info in Received: message headers.
+	Viktor Dukhovni.  Files: proto/FORWARD_SECRECY_README.html,
+	smtpd/smtpd.c, tls/tls.h, tls/tls_client.c, tls/tls_misc.c,
+	tls/tls_proxy.h, tls/tls_proxy_context_print.c,
+	tls/tls_proxy_context_scan.c, tls/tls_server.c.
+
+20181116
+
+	Library function to log TLS 1.3 summary information, and
+	some wordsmithing of TLS context member names. Viktor
+	Dukhovni.  Files: tls/tls.h, tls/tls_misc.c, tls/tls_proxy.h,
+	tls/tls_proxy_context_print.c, tls/tls_proxy_context_scan.c,
+	tls/tls_client.c, tls/tls_server.c, smtpd/smtpd.c,
+	posttls-finger/posttls-finger.c.
+
+	Cleanup: vstream_memopen() flags handling. File:
+	util/vstream.c.
+
+	Cleanup: the SMTP client now uses 'attr_print_plain'
+	serialization and 'attr_scan_plain' deserialization for
+	connection cache lookup keys, which now contain a serialized
+	version of the TLS context. File: smtp/smtp_session.c.
+
+20181117
+
+	The Postfix SMTP client now logs whether an SMTP-over-TLS
+	connection is newly established ("TLS connection established")
+	or whether the connection is reused ("TLS connection reused").
+	Files: smtp/smtp.h, smtp/smtp_proto.c, smtp/smtp_session.c.
+
+	(20181117-nonprod) Unified summary logging in the SMTP
+	client, SMTP server, and posttls-finger. Viktor Dukhovni.
+	Files: tls/tls.h, tls/tls_misc.c, tls/tls_proxy.h,
+	tls/tls_proxy_context_print.c, tls/tls_proxy_context_scan.c,
+	tls/tls_client.c, src/tls/tls_server.c, smtpd/smtpd.c,
+	posttls-finger/posttls-finger.c.
+
+	(20181117-nonprod) Improved logging of TLS 1.3 summary
+	information. On the server side this also affects the TLS
+	information optionally recorded in "Received" headers.
+	Viktor Dukhovni. Files: smtpd/smtpd.c, tls/tls.h,
+	tls/tls_client.c, tls/tls_misc.c, tls/tls_proxy.h,
+	tls/tls_proxy_context_print.c, tls/tls_proxy_context_scan.c,
+	tls/tls_server.c.
+
+	(20181117-nonprod) FORWARD_SECRECY examples with TLS 1.3
+	logging. Viktor Dukhovni. File: proto/FORWARD_SECRECY_README.html.
+
+20181118
+
+	Cleanup, no behavior change: updated comments concerning
+	connection reuse, and updated some identifiers to reflect
+	current reality. Files: smtp_reuse.c, smtp_key.c, smtp_proto.c,
+	smtp_tls_policy.c, smtp.h, smtp_connect.c.
+
+20181119
+
+	Bitrot: makedefs will use "pkg-config" to locate ICU build
+	information, falling back to "icu-config" if "pkg-config"
+	is not found. File: makedefs.
+
+20181122
+
+	Cleanup: tlsproxy loads the same TLS client configuration
+	at pre-jail time as the Postfix SMTP client, so that secret
+	keys can remain read-only for root. This is sufficient for
+	MTAs that have a fixed TLS client identity. tlsproxy will
+	log a warning if it is requested to assume a different TLS
+	client identity, and will log suggestions for a workaround.
+	The long-term solution is to stop loading certs/keys from
+	files, and to use the same approach as planned for server-side
+	SNI support: open a cert/key map at pre-jail time, and read
+	cert/key information on-the-fly at post-jail time. Files:
+	proto/postconf.proto, mantools/postlink, global/mail_params.h,
+	tlsproxy/tlsproxy.c.
+
+20181123
+
+	Cleanup: tlsproxy now logs better instructions when a
+	tls_client_init request specifies an unexpected client
+	identity, and the test for that condition is now moved to
+	the right place. File: tlsproxy/tlsproxy.c.
+
+20181124
+
+	Documentation: clarified the behavior of whitespace within
+	"{}".  Files: proto/DATABASE_README.html, proto/postconf.proto,
+	pipe/pipe.c, postconf/postconf.c,
+
+20181125
+
+	Cleanup: dict_file_to_xxx() takes a list of file names
+	separated by CHARS_COMMA_SP. Shoe-horned into the existing
+	API, make it nicer when there is time. File: util/dict_file.c.
+
+20181127
+
+	Cleanup: encapsulated clumsy 'read into VSTRING' code with
+	easier-to-use vstream_fread_buf() and vstream_fread_app()
+	primitives. Files: global/memcache_proto.c, global/record.c,
+	global/smtp_stream.c, global/smtp_stream.h, global/uxtext.c,
+	global/xtext.c, milter/milter8.c, util/dict_file.c,
+	util/hex_quote.c, util/netstring.c, util/vstream.c,
+	util/vstream.h. Verified with "make tests".
+
+	Cleanup: simplified the smtp_fread() API (introduced for
+	BDAT support), and changed the name to smtp_fread_buf().
+	Files: global/smtp_stream.c, smtpd/smtpd.c. Verified with
+	~megabyte BDAT commands.
+
+	Cleanup: simplified a tlsproxy-internal API. File:
+	tlsproxy/tlsproxy.c.
+
+20181128
+
+	Initial support for key/certificate chain files that will
+	replace the proliferation of separate parameters for
+	RSA/DSA/ECC/etc. key and certificate files. Viktor
+	Dukhovni.
+
+20181201
+
+	Cleanup: replaced the remaining unsafe VSTRING_AT_OFFSET()
+	calls with safe vstring_set_payload_size() calls, in code
+	that directly writes into VSTRING. Files: tls/tls_session.c,
+	tlsmgr/tlsmgr.c, util/casefold.c, util/vstring.c, util/vstring.h,
+	xsasl/xsasl_cyrus_client.c.
+
+	Cleanup: postscreen_command_time_limit did not need to be
+	a 'raw' parameter. This makes "postconf -x" behavior more
+	consistent. Files: global/mail_params.h, postscreen/postscreen.c.
+
+	Documentation: added text that the following parameter
+	values are not subject to Postfix parameter $name expansion:
+	default_rbl_reply, command_execution_directory, luser_relay,
+	smtpd_reject_footer. These have their own documented $name
+	substitution mechanism. File: proto/postconf.proto.
+
+20181202
+
+	Bugfix: posttls-finger reported an error for UNIX-domain
+	connections, even if they did not fail. Found by Coverity.
+	File: posttls-finger/posttls-finger.c.
+
+20181208
+
+	Documentation: add even more redundancy to the rate-delay
+	description. File: proto/postconf.proto.
+
+20181210
+
+	Cleanup: code deduplication. File: util/dict_file.c.
+
+20181226
+
+	Cleanup: code deduplication and better encapsulation with
+	PSC_DEL_CLIENT_STATE() and PSC_DEL_SERVER_STATE() macros.
+	Files: postscreen/postscreen.h, postscreen/postscreen_state.c.
+
+	Documentation: POSTSCREEN_README did not describe the
+	postscreen_post_queue_limit, and attributed the wrong reject
+	message to the postscreen_pre_queue_limit. Problem reported
+	by Michael Orlitzky. File: proto/POSTSCREEN_README.html.
+
+	(20181226-nonprod) Compatibility: removed support for OpenSSL
+	1.0.1 (not supported since December 31, 2016) and earlier
+	releases. This eliminated a large number of #ifdefs with
+	bitrot workarounds.  Viktor Dukhovni. Files: global/mail_params.h,
+	posttls-finger/posttls-finger.c, tls/tls.h, tls/tls_certkey.c,
+	tls/tls_client.c, tls/tls_dane.c, tls/tls_dh.c, tls/tls_misc.c,
+	tls/tls_proxy_client_scan.c, tls/tls_rsa.c, tls/tls_server.c,
+	tls/tls_session.c.
+
+	(20181226-nonprod) Use the OpenSSL 1.0.2 and later API for
+	setting ECDHE curves. Viktor Dukhovni. Files: tls/tls.h,
+	tls/tls_client.c, tls/tls_dh.c.
+
+	(20181226-nonprod) Documentation update for TLS support.
+	Viktor Dukhovni. Files: mantools/postlink, proto/TLS_README.html,
+	proto/postconf.proto, src/sendmail/sendmail.c, src/smtpd/smtpd.c.
+
+20181229
+
+	Explicit maps_file_find() and dict_file_lookup() methods
+	that decode base64 content. Decoding content is not built
+	into the dict->lookup() method, because that would complicate
+	the implementation of map nesting (inline, thash), map
+	composition (pipemap, unionmap), and map proxying.  For
+	consistency, decoding base64 file content is also not built
+	into the maps_find() method. Files: util/dict.h.
+	util/dict_file.c, global/maps.[hc], postmap/postmap.c.
+
+20190106
+
+        Documentation: documented the SRC_RHS_IS_FILE flag in 
+        dict_open.c, and updated the -F description in the postmap
+        manpage. Files: util/dict_open.c, postmap/postmap.c.
+
+	(20190106-nonprod) Feature: support for files that combine
+	multiple (key, certificate, trust chain) instances in one
+	file, to avoid separate files for RSA, DSA, Elliptic Curve,
+	and so on. Viktor Dukhovni. Files: .indent.pro,
+	global/mail_params.h, posttls-finger/posttls-finger.c,
+	smtp/lmtp_params.c, smtp/smtp.c, smtp/smtp_params.c,
+	smtp/smtp_proto.c, smtpd/smtpd.c, tls/tls.h, tls/tls_certkey.c,
+	tls/tls_client.c, tls/tls_proxy.h, tls/tls_proxy_client_print.c,
+	tls/tls_proxy_client_scan.c, tls/tls_proxy_server_print.c,
+	tls/tls_proxy_server_scan.c, tls/tls_server.c, tlsproxy/tlsproxy.c.
+
+	(20190106-nonprod) Create a second, no-key no-cert, SSL_CTX
+	for use with SNI. Viktor Dukhovni. Files: src/tls/tls.h,
+	src/tls/tls_client.c, src/tls/tls_misc.c, src/tls/tls_server.c.
+
+	(20190106-nonprod) Server-side SNI support. Viktor Dukhovni.
+	Files: src/global/mail_params.h, src/smtp/smtp.c,
+	src/smtpd/smtpd.c, src/tls/tls.h, src/tls/tls_certkey.c,
+	src/tls/tls_misc.c, src/tlsproxy/tlsproxy.c,
+
+	(20190106-nonprod) Configurable client-side SNI signal.
+	Viktor Dukhovni. Files: global/mail_params.h,
+	posttls-finger/posttls-finger.c, smtp/lmtp_params.c,
+	smtp/smtp.c, smtp/smtp.h, smtp/smtp_params.c, smtp/smtp_proto.c,
+	smtp/smtp_tls_policy.c, tls/tls.h, tls/tls_client.c,
+	tls/tls_proxy.h, tls/tls_proxy_client_print.c,
+	tls/tls_proxy_client_scan.c.
+
+20190121
+
+	Logging: support for internal logging file, without using
+	syslog (it uses the new postlogd daemon instead). This
+	solves a usability problem for MacOS, may help getting
+	around systemd, and solves 99% of the problem for logging
+	to stdout in a container (hopefully we have 100% soon).
+	Enable by setting, for example, "maillog_file =
+	/var/log/postfix.log").  This works fine for daemons, and
+	with some limitations for non-daemon programs.  See
+	RELEASE_NOTES for more details.  Files: conf/master.cf,
+	conf/post-install, conf/postfix-files, conf/postfix-script,
+	mantools/postlink, proto/master, proto/postconf.proto,
+	global/mail_params.c, global/mail_params.h, global/mail_proto.h,
+	global/maillog_client.c, global/maillog_client.h,
+	master/dgram_server.c, master/event_server.c, master/mail_server.h,
+	master/master.c, master/master.h, master/master_ent.c,
+	master/master_listen.c, master/master_proto.h,
+	master/master_wakeup.c, master/multi_server.c,
+	master/single_server.c, master/trigger_server.c,
+	postalias/postalias.c, postconf/postconf_master.c,
+	postdrop/postdrop.c, postfix/postfix.c, postkick/postkick.c,
+	postlog/postlog.c, postlogd/postlogd.c, postmap/postmap.c,
+	postmulti/postmulti.c, postqueue/postqueue.c,
+	postsuper/postsuper.c, sendmail/sendmail.c, util/connect.h,
+	util/listen.h, util/logwriter.c, util/logwriter.h,
+	util/msg_logger.c, util/msg_logger.h, util/msg_output.c,
+	util/msg_output.h, util/unix_dgram_connect.c,
+	util/unix_dgram_listen.c.
+
+	Cleanup: cert/key/chain loading, plus unit tests to exercise
+	non-error and error cases. Viktor Dukhovni. Files: tls/*.pem,
+	tls*.pem.ref, tls/tls_certkey.c.
+
+20190126
+
+	Safety: Postfix programs will log to either syslog or postlog
+	but not both; and postlogd forwards postlog logging to
+	syslog, when a configuration change removes the maillog_file
+	pathname, but some programs still use the old configuration.
+	Files: util/msg_syslog.[hc], util/msg_logger.c,
+	global/maillog_client.c, postlogd/postlogd.c,
+
+	Bugfix (introduced: Postfix 20110109, Postfix 2.10): watchdog
+	pipe file descriptor leak. This pipe provides one source
+	of liveness, data from this pipe is discarded, and therefore
+	this does not enable privilege escalation or DOS. File:
+	util/watchdog.c.
+
+	Feature: stdout logging support; requires "postfix start-fg"
+	and "maillog_file = /dev/stdout". Files: master/master.c,
+	conf/postfix-script.
+
+20190127
+
+	Safety: when maillog_file is specified, 'postfix check' now
+	requires that the postlog service is enabled in master.cf.
+	Otherwise 'postfix start' etc. will log a fatal error. File:
+	conf/postfix-script.
+
+	Documentation: added policy_context example. File:
+	proto/SMTPD_POLICY_README.html.
+
+20190128
+
+	Testing: run libtls tests under Valgrind. File tls/Makefile.in.
+
+20190129
+
+	Safety: require that $maillog_file matches one of the
+	pathname prefixes specified in $maillog_file_prefixes. The
+	maillog file is created by root, and the prefixes limit the
+	damage from a single configuration error. Files:
+	global/mail_params.[hc], global/maillog_client.c.
+
+20191201
+
+	Feature: "postfix logrotate" command with configurable
+	compression program and datestamp filename suffix. File:
+	conf/postfix-script.
+
+20190202
+
+	Cleanup: log a warning when the client sends a malformed
+	SNI; log an info message when the client sends a valid SNI
+	that does not match the SNI lookup tables; update the
+	FORWARD_SECRECY_README logging examples. Viktor Dukhovni.
+	Files: proto/FORWARD_SECRECY_README.html, tls/tls.h,
+	tls/tls_client.c, tls/tls_misc.c.
+
+20190208
+
+	Debugging: the master(8) daemon now logs a warning if a
+	master.cf entry is defined multiple times. File:
+	src/master/master_conf.c.
+
+20190209
+
+	Debugging: tlsproxy(8) now logs more details about unexpected
+	configuration differences between the Postfix SMTP client
+	and the tlsproxy(8) daemon.
+
+20190210
+
+	Documentation: Postfix 3.4.0 RELEASE NOTES.
+
+	Documentation: added BDAT_README.
+
+	Documentation: global TLS settings. Files: mantools/postlink,
+	smtp/smtp.c, tlsproxy/tlsproxy.c.
+
+20190211
+
+	Cleanup: removed obsolete parameters: tls_dane_digest_agility,
+	tls_dane_trust_anchor_digest_enable; removed openssl_path
+	parameter from configuration difference checks in tlsproxy.
+	Files: global/mail_params.h, tls/tls_misc.c,
+	tls/tls_proxy_client_misc.c, tls/tls_proxy_client_print.c,
+	tls/tls_proxy_client_scan.c, tls/tls_proxy.h.
+
+20190212
+
+	Cleanup: missing #ifdef USE_TLS. Files: smtp/smtp_session.c,
+	posttls-finger/posttls-finger.c.
+
+20190217
+
+	Cleanup: when the master daemon runs with PID=1 (init mode),
+	reap orhpan processes from non-Postfix code running in the
+	same container, instead of terminating with a panic. File:
+	master/master_spawn.c.
+
+20190218
+
+	Bugfix: tlsproxy did not enable DANE-style PKI because
+	libtls seems to have to accreted multiple init functions
+	instead of reusing the tls_client_init() and tls_client_start()
+	API. And some functions that do initialization don't even
+	have init in their name! Problem report by Andreas Schulze.
+	Viktor Dukhovni. Files: tls/tls_misc.c, tlsproxy/tlsproxy.c.
+
+	Workaround: Postfix libtls makes DANE-specific changes to
+	the shared SSL_CTX. To avoid false sharing, tlsproxy needs
+	to label the SSL_CTX cache with DANE bits until we can
+	remove the code that modifies SSL_CTX. File: tlsproxy/tlsproxy.c.
+
+	Cleanup: Postfix libtls changed the shared SSL_CTX to
+	override ciphers. instead of changing the SSL handle. To
+	avoid false sharing in tlsproxy, the changes are now made
+	to the SSL handle. Viktor Dukhovni. Files: tls/tls.h,
+	tls/tls_client.c, tls/tls_misc.c, tls/tls_server.c.
+
+20190219
+
+	Bugfix: in the Postfix SMTP client, TLS wrappermode was not
+	tested in tlsproxy mode. It needed some setup for buffering
+	and timeouts. Problem report by Andreas Schulze. File:
+	smtp/smtp_proto.c.
+
+20190226
+
+	Documentation: postconf(1) and DATABASE_README were out of
+	sync. Added a note that this should be deduplicated. File:
+	proto/DATABASE_README.html.
+
+20190227
+
+	Documentation: strict_smtputf8 in SMTPUTF8_README.
+
+20190304
+
+	Bugfix: a reversed test broke TLS configurations that specify
+	the same filename for a private key and certificate. Reported
+	by Mike Kazantsev. Fix by Viktor Dukhovni. Wietse fixed the
+	test. Files: tls/tls_certkey.c, tls/Makefile.in.
+
+20190310
+
+	Bitrot: LINUX5s support, after some sanity checks with a
+	rawhide prerelease version. Files: makedefs, util/sys_defs.h.
+
+	Bugfix (introduced: 20181226): broken DANE trust anchor
+	file support, caused by left-over debris from the 20181226
+	TLS library overhaul. By intrigeri. File: tls/tls_dane.c.
+
+	Bugfix (introduced: Postfix-1.0.1): null pointer read, while
+	logging a warning after reading a corrupted bounce log file.
+	File: global/bounce_log.c.
+
+	Bugfix (introduced: Postfix-2.9.0): null pointer read, while
+	logging a warning after a postscreen_command_filter read
+	error. File: postscreen/postscreen_smtpd.c.
+
+20190312
+
+	Bugfix (introduced: Postfix 2.2): reject_multi_recipient_bounce
+	has been producing false rejects starting with the Postfix
+	2.2 smtpd_end_of_data_restrictons, and for the same reasons,
+	did the same with the Postfix 3.4 BDAT command. The latter
+	was reported by Andreas Schulze. File: smtpd/smtpd_check.c.
+
+20190319
+
+	With message_size_limit=0 (which is NOT DOCUMENTED), BDAT
+	chunks were always too large. Reported by Thorben Thuermer.
+	fix by Viktor Dukhovni. File: src/smtpd/smtpd.c.
+
+20190328
+
+	Bugfix (introduced: Postfix 3.0): LMTP connections over
+	UNIX-domain sockets were cached but not reused, due to a
+	cache lookup key mismatch. Therefore, idle cached connections
+	could exhaust LMTP server resources, resulting in two-second
+	pauses between email deliveries. This problem was investigated
+	by Juliana Rodrigueiro. File: smtp/smtp_connect.c.
+
+20190331
+
+	Documentation: tlsext_padding is not a tls_ssl_options
+	feature. File: proto/postconf.proto.
+
+20190401
+
+	Portability: to avoid a compile-time error on Solaris, added
+	"#undef sun" to util/unix_dgram_connect.c.
+
+20190403
+
+	Bugfix (introduced: Postfix 2.3): a censoring filter broke
+	multiline Milter responses for header/body events. Problem
+	report by Andreas Thienemann. Files: util/printable.c,
+	util/stringops.h, smtpd/smtpd.c.
+
+	Bugfix (introduced: Postfix 3.3): "smtp_mx_address_limit = 0"
+	no longer meant 'unlimited'. Problem report by Luc Pardon.
+	File: smtp/smtp_addr.c.
+
+20190427
+
+	Cleanup: normalize the IP address string forms received with
+	XCLIENT, XFORWARD, and HaProxy, for consistency with address
+	information for direct connections to Postfix, and add unit
+	tests. This casefolds and removes redundant nulls from the
+	string representation of an IPv6 address, normalizes the
+	"IPv6:" address prefix of RFC 2821 IPv6 address forms, and
+	converts IPv4 address octets with leading zeros (octal form)
+	into decimal form. Files: global/haproxy.c,
+	global/normalize_mailhost_addr.[hc], smtpd/smtpd.c.
+
+	Incompatibility: this may change the appearance of logging,
+	and the way that check_client_access will match subnets of
+	an IPv6 address.
+
+20190428
+
+	Cleanup: replace "(whatever *) 0" with meaningfully-named
+	constants. Sheesh. File: smtpd/smtpd.c.
+
+	Documentation: BASIC_CONFIGURATION_README example default
+	setting was not updated after Postfix 3.0 change. File:
+	proto/BASIC_CONFIGURATION_README.html
+
+20190505
+
+	Workaround: uClibc has no res_send. Log a warning if this
+	code path would be used, and ignore dns_ncache_ttl_fix_enable.
+	Files: util/sys_defs.h, dns/dns_lookup.c, TODO: makedefs
+	and INSTALL documentation.
+
+20190516
+
+	Initial search order support for check_ccert_access. The
+	default behavior is backwards-compatible. This is work in
+	progress; see the RELEASE_NOTES for examples.  Files:
+	global/map_search.[hc], smtpd/smtpd_check.c.
+
+20190517
+
+	Bugfix: postconf mis-parsed text starting with "{" such as
+	"check_ccert_access { inline:{a=b} { search_order=c,d } }".
+	Fixed by adding another level of recursion. File:
+	postconf/postconf_dbms.c.
+
+20190525
+
+	Infrastructure: reject_deliver_request() to reject an entire
+	delivery request and bounce or defer all its recipients.
+	File: global/reject_deliver_request.c.
+
+20190609
+
+	Infrastructure: byte_mask() to convert "flags=mumble" into
+	a byte mask. This is similar to name_mask(). Files:
+	util/byte_mask.[hc] and tests.
+
+20190615
+
+	Dovecot usability: SMTP/LMTP client support for 'D', 'O',
+	'R', 'X' flags similar to the pipe(8) daemon, to produce
+	Delivered-To, X-Original-To, and Return-Path headers, and
+	to indicate final delivery. Files: smtp/smtp.c, smtp/smtp.h,
+	smtp/smtp_misc.c, smtp/smtp_proto.c, smtp/smtp_rcpt.c.
+
+	Workaround for implementations that hang Postfix while
+	shutting down a TLS session, until Postfix times out. With
+	"tls_fast_shutdown_enable = yes" (the default), Postfix no
+	longer waits for the TLS peer to respond to a TLS 'close'
+	request. This is recommended with TLSv1.0 and later. Files:
+	global/mail_params.h, tls/tls_session.c, and documentation.
+
+20190618
+
+	Documentation: corrected comments about the code change to
+	not wait for the TLS peer's response after sending a TLS
+	'close' notification. Viktor Dukhovni. Files: HISTORY,
+	RELEASE_NOTES, proto/postconf.proto smtp/smtp.c smtpd/smtpd.c
+	tlsproxy/tlsproxy.c
+
+20190621
+
+	Workaround: don't reuse an SMTP connection after an SMTP
+	protocol error. This limits the impact of, for example,
+	pipelining synchronization errors. File: smtp/smtp_trouble.c.
+
+	Bugfix (introduced: Postfix 3.0): the code to reset Postfix
+	SMTP server command counts was not called after a HaProxy
+	handshake failure, causing stale numbers to be reported.
+	The command counts are now reset in the function that reports
+	the counts. Problem report by Joseph Ward. File: smtpd/smtpd.c.
+
+20190719
+
+	Bitrot: OpenBSD stopped having /dev/arandom 8 years ago.
+	Brad Smith. File: util/sys_defs.h.
+
+20190723
+
+	Bugfix: the documentation said tls_fast_shutdown_enable,
+	but the code said tls_fast_shutdown. Viktor Dukhovni. Changed
+	the code because no-one is expected to override the default.
+	File: global/mail_params.h.
+
+20190724
+
+	Cleanup: proxymap(8) support for table search order syntax.
+	File: proxymap/proxymap.c.
+
+	Safety: vstring_set_payload_size() now checks that the
+	payload has not overwritten the safety terminator at the
+	end of the VSTRING buffer. File: util/vstring.c.
+
+20190813
+
+	Documentation: access(5) map network address pattern syntax.
+	File: proto/access.
+
+20190820
+
+	Workaround for poor TCP loopback performance on LINUX, where
+	getsockopt(..., TCP_MAXSEG, ..) reports a TCP maximal segment
+	size that is 1/2 to 1/3 of the MTU. For example, with kernel
+	5.1.16-300.fc30.x86_64 the TCP client and server announce
+	an mss of 65495 in the TCP handshake, but getsockopt()
+	returns 32741 (less than half). As a matter of principle,
+	Postfix won't turn on client-side TCP_NODELAY because that
+	hides application performance bugs, and because that still
+	suffers from server-side delayed ACKs. Instead, Postfix
+	avoids sending "small" writes back-to-back, by choosing a
+	VSTREAM buffer size that is a multiple of the reported MSS.
+	This workaround bumps the multiplier from 2x to 4x. File:
+	util/vstream_tweak.c.
+
+20190825
+
+	Bugfix (introduced: 20051222): the Dovecot client could
+	segfault (null pointer read) or cause an SMTP server assertion
+	to fail when talking to a fake Dovecot server. The client
+	now logs a proper error instead. Problem reported by Tim
+	Düsterhus. File: xsasl/xsasl_dovecot_server.c.
+
+20190908
+
+	Documentation: updated postconf(5) description of the
+	tls_server_sni_maps configuration parameter. Viktor Dukhovni.
+	File: proto/postconf.proto.
+
+20190914
+
+	Bugfix (introduced: Postfix 3.4): don't whitewash OpenSSL
+	error results after a plaintext output error. The code could
+	loop, and with some OpenSSL error results could flood the
+	log with error messages (see below for a specific case).
+	Problem reported by Andreas Schulze. File: tlsproxy/tlsproxy.c.
+
+	Bitrot: don't invoke SSL_shutdown() when the SSL engine
+	thinks it is processing a TLS handshake. The commit at
+	https://github.com/openssl/openssl/commit/64193c8218540499984cd63cda41f3cd491f3f59
+	changed the error status, incompatibly, from SSL_ERROR_NONE
+	into SSL_ERROR_SSL. File: tlsproxy/tlsproxxy.c.
+
+20190918
+
+	Cleanup: the nbbio(3) library now accepts a sequence of
+	nbbio_enable_read() calls or a sequence of nbbio_enable_write()
+	calls. This allows tlsproxy(8) to reset an I/O timer after
+	each event without having to make an nbbio_disable_readwrite()
+	call. Files: util/nbbio.c, tlsproxy/tlsproxy.c.
+
+20191013
+
+	Cleanup: code pattern ENFORCING_SIZE_LIMIT() for more
+	consistent enforcement of the 'no size limit' case (it now
+	requires "> 0" where previous code used "!= 0" or "> 0").
+	More relevant, this explicit pattern will help finding code
+	that does not implement the 'no size limit' case with
+	var_message_limit, etc. Files: cleanup/cleanup_init.c,
+	local/local.c, postdrop/postdrop.c, postscreen/postscreen_smtpd.c,
+	sendmail/sendmail.c, smtpd/smtpd.c, smtpd/smtpd_check.c,
+	util/netstring.c, util/sys_defs.h, virtual/virtual.c.
+
+	Cleanup; with message_size_limit>0, local(8) and virtual(8)
+	mailbox size limit checks would produce a misleading error
+	message when the mailbox size was unlimited. Files:
+	local/local.c, virtual/virtual.c.
+
+	Cleanup: queue_minfree changed from 'int' to 'long'. File:
+	global/mail_params.h, src/smtpd/smtpd.c.
+
+	Attribution: updated AUTHOR in file headers. Files:
+	global/bounce_log.c, global/deliver_request.h, smtp/smtp_chat.c,
+	smtp/smtp_rcpt.c, tls/tls_certkey.c, util/nbbio.c,
+	util/vstream_tweak.c.
+
+20191014
+
+	Bugfix (introduced: Postfix 2.8): don't gratuitously enable
+	all after-220 tests when only one such test is enabled.
+	This made selective tests impossible with 'good' clients.
+	File: postscreen/postscreen_smtpd.c.
+
+	Bugfix: the 20180903 postscreen fix for a misleading
+	"PIPELINING after BDAT" warning looked at the wrong variable.
+	The warning now says "BDAT without valid RCPT", and the
+	error is no longer treated as a command PIPELINING error
+	(but sending BDAT is still a client error, because postscreen
+	rejects all RCPT commands and does not announce PIPELINING
+	support). File: postscreen/postscreen_smtpd.c.
+
+20190922
+
+	Documentation: replaced the link to "Suite B" cryptography
+	with a link to web.archive.org. File: proto/postconf.proto.
+
+20191109
+
+	Cleanup: Postfix daemon processes now log the from= and to=
+	addresses in external (quoted) form in non-debug logging
+	(info, warning, etc.). This is consistent with the address
+	form that Postfix 3.2 and later prefer for table lookups.
+	It is therefore the more useful form for non-debug logging.
+	Files: cleanup/cleanup.c, cleanup/cleanup_message.c,
+	cleanup/cleanup_milter.c, global/info_log_addr_form.c,
+	global/info_log_addr_form.h, global/log_adhoc.c,
+	global/mail_params.c, global/mail_params.h, global/opened.c,
+	local/local.c, oqmgr/qmgr.c, oqmgr/qmgr_active.c,
+	pickup/pickup.c, pipe/pipe.c, postscreen/postscreen.c,
+	postscreen/postscreen_smtpd.c, proto/postconf.proto,
+	qmgr/qmgr.c, qmgr/qmgr_active.c, smtp/smtp.c, smtpd/smtpd.c,
+	smtpd/smtpd_check.c, virtual/virtual.c.
+
+	Usability: the parser for key/certificate chain files
+	rejected inputs that contain an EC PARAMETERS object. While
+	this is technically correct (the documentation says what
+	types are allowed) this is surprising behavior because the
+	legacy cert/key parameters will accept such inputs. For
+	now, the parser skips object types that it does not know
+	about usability, and logs a warning because ignoring inputs
+	is not kosher. Viktor and Wietse. File: tls/tls_certkey.c.
+
+20191201
+
+	Compatibility: added '_' to the milter_connect_macros default
+	value. Reportedly some software produces an ugly warning
+	message if Postfix does not send the macro, and there is
+	no harm in sending it. File: global/mail_params.h.
+
+20191214
+
+	Bugfix (introduced: Postfix 3.1): support for
+	smtp_dns_resolver_options was broken while adding support
+	for negative DNS response caching in postscreen. Postfix
+	was inadvertently changed to call res_query() instead of
+	res_search(). Reported by Jaroslav Skarvada. File:
+	dns/dns_lookup.c.
+
+	Bugfix: sanitize server responses before storing them in
+	the verify database, to avoid Postfix warnings about malformed
+	UTF8. File: verify/verify.c.
+
+20191215
+
+	Future proofing: the Postfix DNS library logs a warning if
+	the DNS_REQ_FLAG_NCACHE_TTL dns_lookup flag is set and the
+	RES_DNSRCH or RES_DEFNAMES resolver flags are set, and
+	disables those resolver flags. File: dns/dns_lookup.c.
+
+20191230
+
+	Documentation: added the 'X' flag (final delivery) to the
+	pipe-based final delivery examples in the default master.cf
+	file. File: conf/master.cf
+
+20201005
+
+	Workaround: postlog clients open the socket before entering
+	the chroot jail and before dropping privileges. This is needed
+	on MacOS and would not hurt otherwise. Files: util/msg_logger.[hc],
+	global/maillog_client.c.
+
+20200108
+
+	UI cleanup: SMTP (and LMTP) client support for a list of
+	nexthop destinations separated by comma or whitespace. These
+	will be tried in the specified order. The list form can be
+	specified in relayhost, transport_maps, default_transport,
+	and sender_dependent_default_transport_maps.  Examples:
+	"relayhost = foo.example, bar.example", and "default_transport
+	= smtp:foo.example, bar.example". Files: smtp/smtp.c,
+	smtp/smtp_connect.c, trivial-rewrite/resolve.c, proto/transport,
+	proto/postconf.proto, global/mail_params.c.
+
+20200112
+
+	[initially released as part of postfix-20200101-nonprod]
+	Refactored the haproxy infrastructure in preparation for
+	haproxy version 2 support. This is necessary because version
+	2 introduces a dependency of the reader on the parser.
+	Additionally, version 2 introduces support for non-proxied
+	connections (used by health checks). Files: global/haproxy_srvr.c,
+	smtpd/smtpd_peer.c, smtpd/smtpd_haproxy.c, smtpd/smtpd.h,
+	postscreen/postscreen.h, postscreen/postscreen_endpt.c,
+	postscreen/postscreen_haproxy.c, postscreen/postscreen_haproxy.h,
+	global/haproxy_srvr.h. Initial release 3.5-20200101-nonprod.
+
+	[initially released as part of postfix-20200105-nonprod]
+	Support for the haproxy v2 protocol. The haproxy v2 protocol
+	support is limited to TCP over IPv4 and TCP over IPv6. It
+	also supports non-proxied connections (typically used for
+	heartbeat tests). File: global/haproxy_srvr.c.
+
+	[initially released as part of postfix-20200105-nonprod]
+	Cleanup: after haproxy handshake error, the Postfix SMTP
+	daemon now logs the proxy connection information instead
+	of unknown/unknown, and replies with "421 4.3.0 $myhostname
+	Server local error" instead of just hanging up. Error
+	details are logged to the maillog file. File: smtpd/smtpd.c.
+
+	Cleanup: miscellaneous comments, constants, error checks,
+	no normal behavior change. Files: global/haproxy_srvr.c,
+	postscreen/postscreen_haproxy.c.
+
+20200126
+
+	Cleanup: missing 'extern' declarations in some header files.
+	Eray Aslan. Files: global/mail_params.h, postconf/postconf.h,
+	smtpd/smtpd_expand.h, trivial-rewrite/trivial-rewrite.h
+
+	Typos: Viktor Dukhovni. File: HISTORY.
+
+	Documentation: haproxy2 support. File: proto/postconf.proto.
+
+20200120
+
+	[initially released as part of postfix-20200125-nonprod]
+	Feature: forced message expiration. The "postsuper -e"
+	option sets an 'expired' bit on one or more messages selected
+	by their message ID. The queue manager returns a message
+	as undeliverable when it moves the message to the active
+	queue. Messages in the hold queue stay in that queue.
+
+	If a force-expired message was deferred, then it is returned
+	with the reason for the delay. Otherwise, the message is
+	returned with "message is administratively expired". Design
+	by Wietse; Viktor suggested using the group execute permission
+	bit. Files: global/mail_queue.h, *qmgr/qmgr.h, *qmgr/qmgr_active.c,
+	*qmgr/qmgr_message.c, postsuper/Makefile.in, postsuper/postsuper.c.
+
+20200125
+
+	[initially released as part of postfix-20200125-nonprod]
+	Added support for "postsuper -f" to expire and optionally
+	release a message. Restructured the postsuper command so
+	that it will execute actions in the order of the -[defhr]
+	flags, instead of using an invisible fixed internal order.
+	The -e and -f options are idempotent (just like -h and -H).
+	Adjusted the summary at the end to make this more clear.
+	File: postsuper/postsuper.c.
+
+20200126
+
+	[initially released as part of postfix-20200126-nonprod]
+	Updated the mailq/postqueue commands to make forced message
+	expiration status available. In ASCII ouput this is indicated
+	with "#" appended to the queue file name, and in JSON output
+	this is indicated with the boolean "force_expired" attribute.
+	Files: showq/showq.c, postqueue/showq_compat.c,
+	postqueue/showq_json.c.
+
+	[initially released as part of postfix-20200126-nonprod]
+	Cleanup: minor tweaks to comments and code.
+
+	Safety: give maildrop queue files more time (week instead
+	of day) to reach completion, in case a message is submitted
+	by a really long-running program. File: postsuper/postsuper.c.
+
+	Cleanup: postsuper manpage indentation, word abbreviation.
+	Files: mantools/postlink, postsuper/postsuper.c.
+
+20200202
+
+	Cleanup: nags about strcpy()/sprintf() from naive checkers.
+	Files: global/mail_conf_int.c, global/mail_conf_long.c,
+	global/mail_conf_nint.c, global/mail_conf_time.c,
+	global/maillog_client.c, util/mymalloc.c.
+
+	Documentation: rephrased the postconf(5) manual page entry
+	for milter_default_action. File: proto/postconf.proto.
+
+	Bugfix (introduced: Postfix 2.5): Milter SMTP connect event
+	macros were evaluated before the Postfix-to-Milter connection
+	had been negotiated. Problem reported by David Bürgin.
+	Files: milter/milter.h, milter/milter.c, milter/milter8.c
+
+20200308
+
+	Cleanup: spellchecks, attributions. Files: HISTORY,
+	auxiliary/name-addr-test/gethostbyaddr.c,
+	auxiliary/name-addr-test/getnameinfo.c, proto/postconf.proto,
+	global/haproxy_srvr.c, global/mail_version.h, global/map_search.c,
+	global/map_search.h, postsuper/postsuper.c, smtp/smtp.c,
+	smtp/smtp_misc.c, smtpd/smtpd.c, smtpd/smtpd_check.c,
+	smtpd/smtpd_expand.h, tls/tls_client.c, tls/tls_server.c,
+	tlsproxy/tlsproxy.c, trivial-rewrite/trivial-rewrite.h,
+	util/byte_mask.c, util/vstream_tweak.c.
+
+	Cleanup: bitrot in tests. File: cleanup/cleanup_milter.c.
+
+	Cleanup: harmless memory leak in postconf. File:
+	postconf/postconf_master.c.
+
+	Bugfix (introduced: Postfix 2.3): panic with Postfix
+	multi-Milter configuration during MAIL FROM. Milter client
+	state was not properly reset after one of the Milters failed.
+	Reported by WeiYu Wu.
+
+20200312
+
+	Usability: the Postfix SMTP server now logs a warning when
+	a configuration requests access control by client certificate,
+	but "smtpd_tls_ask_ccert = no". Files: proto/postconf.proto,
+	smtpd/smtpd_check.c.
+
+20200316
+
+	Removed the issuer_cn and subject_cn matches from
+	check_ccert_access. Files: smtpd/smtpd_check.c,
+	proto/postconf.proto.
+
+20200416
+
+	Workaround for broken builds after an incompatible change
+	in GCC 10. Files: makedefs, Makefile.in.
+
+	Workaround for broken DANE support after an incompatible
+	change in GLIBC 2.31. This avoids the need for new options
+	in /etc/resolv.conf. Files: dns/dns.h, dns/dns_lookup.c.
+
+20200419
+
+	Bugfix: segfault in the tlsproxy client role when the server
+	role was disabled. This typically happens on systems that
+	do not receive mail, after configuring connection reuse for
+	outbound TLS. Found during program maintenance. File:
+	tlsproxy/tlsproxy.c.
+
+20200420
+
+	Noise suppression: shut up a compiler that special-cases
+	string literals. Viktor Dukhovni. File milter/milter.c.
+
+20200422
+
+	Security: disable DANE support on Alpine Linux because
+	libc-musl provides no indication whether DNS responses are
+	authentic. This broke DANE support without a clear explanation.
+	File: makedefs.
+
+20200505
+
+	Noise suppression: shut up a compiler that special-cases
+	string literals. Viktor Dukhovni. File smtpd/smtpd_check.c.
+
+20200509
+
+	Bugfix (introduced: Postfix 3.5): maillog_file_rotate_suffix
+	default value used the minute instead of the month. Reported
+	by Larry Stone. Files: conf/postfix-tls-script,
+	proto/MAILLOG_README.html, proto/postconf.proto.
+	global/mail_params.h, postfix/postfix.c.
+
+20200510
+
+	Bitrot: avoid U_FILE_ACCESS_ERROR after chroot(), by
+	initializing the ICU library before making the chroot()
+	call. Files: util/midna_domain.[hc], global/mail_params.c.
+
+20200511
+
+	Noise suppression: avoid "SSL_Shutdown:shutdown while in
+	init" warnings. File: tls/tls_session.c.
+
+20200515
+
+	Bugfix (introduced: Postfix 2.2): a TLS error for a PostgreSQL
+	client caused a false 'lost connection' error for an SMTP
+	over TLS session in the same Postfix process. Reported by
+	Alexander Vasarab, diagnosed by Viktor Dukhovni. File:
+	tls/tls_bio_ops.c.
+
+	Bugfix (introduced: Postfix 2.8): a TLS error for one TLS
+	session may cause a false 'lost connection' error for a
+	concurrent TLS session in the same tlsproxy process. File:
+	tlsproxy/tlsproxy.c.
+
+20200530
+
+	Bugfix (introduced: Postfix 3.1): "postfix tls deploy-server-cert"
+	did not handle a missing optional argument. File:
+	conf/postfix-tls-script.
+
+20200610
+
+	Bugfix (introduced: Postfix 3.4): in the Postfix SMTP server,
+	the SNI callback reported an error when it was called a
+	second time. This happened after the server-side TLS engine
+	sent a TLSv1.3 HelloRetryRequest (HRR) to a remote SMTP
+	client. Reported by Ján Máté, fixed by Viktor Dukhovni.
+	File: tls/tls_misc.c.
+
+20200617
+
+	Bugfix (introduced: Postfix 3.4): the connection_reuse
+	attribute in smtp_tls_policy_maps resulted in an "invalid
+	attribute name" error. Fix by Thorsten Habich. File:
+	smtp/smtp_tls_policy.c.
+
+20200619
+
+	Bugfix (introduced: Postfix 3.4): SMTP over TLS connection
+	reuse was broken for configurations that use explicit trust
+	anchors. Reported by Thorsten Habich. Cause: the tlsproxy
+	client was sending a zero certificate length. File:
+	tls/tls_proxy_client_print.c.
+
+20200620
+
+	Bugfix (introduced: Postfix 3.4): SMTP over TLS connection
+	reuse was broken for configurations that use explicit trust
+	anchors. Reported by Thorsten Habich. Fixed by calling DANE
+	initialization unconditionally (WTF). File: tlsproxy/tlsproxy.c.
+
+20200626
+
+	Bugfix (introduced: Postfix 2.11): The Postfix smtp(8)
+	client did not send the right SNI name when the TLSA base
+	domain was a secure CNAME expansion of the MX hostname (or
+	non-MX nexthop domain). Domains with CNAME expanded MX hosts
+	are not conformant with RFC5321, and so are rare. Even more
+	rare are MX hosts with TLSA records for their CNAME expansion.
+	For this to matter, the remote SMTP server would also have
+	to select its certificate based on the SNI name in such a
+	way that the original MX host would yield a different
+	certificate. Among the ~2 million hosts in the DANE survey,
+	none meet the conditions for returning a different certificate
+	for the expanded CNAME. Therefore, sending the correct SNI
+	name should not break existing mail flows. Fixed by Viktor
+	Dukhovni. File: src/tls/tls_client.c.
+
+20200710
+
+	Bugfix (introduced: Postfix 3.0): minor memory leaks in the
+	Postfix TLS library, found during tests. File: tls/tls_misc.c.
+
+20200712
+
+	Bugfix (introduced: Postfix 3.0): 4kbyte per session memory
+	leak in the Postfix TLS library, found during tests. File:
+	tls/tls_misc.c.
+
+20200724
+
+	Workaround for distros that override Postfix protocol
+	settings in a system-wide OpenSSL configuration file, causing
+	interoperability problems after an OS update. File:
+	tls/tls_client.c, tls/tls_server.c.
+
+20200726
+
+	Bugfix (introduced: Postfix 3.5.5): part of a memory leak
+	fix was backported to the wrong place. File: tls/tls_misc.c.
+
+	The Postfix 3.5.5 workaround did not explicitly override
+	the system-wide OpenSSL configuration of allowed TLS protocol
+	versions, for sessions where the remote SMTP client sends
+	SNI. It's better to be safe than sorry. File: tls/tls_server.c.
+
+20200821
+
+	Bugfix (introduced: Postfix 3.4, already fixed in Postfix
+	3.6): tlsproxy(8) was using the wrong DANE macro for
+	connections with DANE trust anchors or with non-DANE trust
+	anchors (WTF: Thorsten Habich found this bug in the use
+	case that has nothing to do with DANE). This resulted in a
+	global certificate verify function pointer race, between
+	TLS handshakes that use TLS trust achors and handshakes
+	that use PKI. No memory was corrupted in the course of all
+	this.  Viktor Dukhovni. File: tlsproxy/tlsproxy.c.
+
+	Cleanup: the posttls-finger '-X' option reported a false
+	conflict with '-r'. File: posttls-finger/posttls-finger.c.
+
+20200830
+
+	Bugfix (introduced: Postfix 2.0): smtp_sasl_mechanism_filter
+	ignored table lookup errors, treating them as 'not found'.
+	Found during Postfix 3.6 development. File: smtp/smtp_sasl_proto.c.
+
+202000920
+
+	Bugfix (introduced: Postfix 2.3): when deleting a recipient
+	with a milter, delete the recipient from the duplicate
+	filter, so that the recipient can be added back. Backported
+	from Postfix 3.6. Files: global/been_here.[hc],
+	cleanup/cleanup_milter.c.
+
+20200925
+
+	Bugfix (introduced: before Postfix alpha): the code that
+	looks for Delivered-To: headers ignored headers longer than
+	$line_length_limit. Backported from Postfix 3.6. File:
+	global/delivered_hdr.c.
+
+20201011
+
+	Bugfix (introduced: Postfix 2.8): save a copy of the
+	postscreen_dnsbl_reply_map lookup result. This has no effect
+	when the recommended texthash: look table is used, but it
+	may avoid stale data with other lookup tables. File:
+	postscreen/postscreen_dnsbl.c.
+
+20201022
+
+	Bugfix (introduced: Postfix 2.2): after processing an
+	XCCLIENT command, the smtps service was waiting for a TLS
+	handshake. Found by Aki Tuomi. File: smtpd/smtpd.c.
+
+20201025
+
+	Bugfix (introduced: Postfix 2.3): static maps did not free
+	their casefolding buffer. File: util/dict_static.c.
+
+20201104
+
+	Bugfix (introduced: Postfix 3.5): the Postfix SMTP client
+	broke message headers longer than $line_length_limit, causing
+	subsequent header content to become message body content.
+	Reported by Andreas Weigel, fix by Viktor Dukhovni. File:
+	smtp/smtp_proto.c.
+
+20210116
+
+        Feature: when a Postfix program makes a DNS query that
+        requests DNSSEC validation (usually for Postfix DANE support)
+        but the DNS response is not DNSSEC validated, Postfix will
+        send a DNS query configured with the "dnssec_probe" parameter
+        to determine if DNSSEC support is available, and logs a
+        warning if it is not. By default, the probe has type "ns"
+        and domain name ".". The probe is sent once per process
+        lifetime. Files: dns/dns.h, dns/dns_lookup.c, dns/dns_sec.c,
+        test_dns_lookup.c, global/mail_params.[hc], mantools/postlink.
+
+        The makedefs script no longer disables DNSSEC when Postfix
+        is built with libc-musl. Instead Postfix will rely on the
+        new dnssec_probe feature, and will log a warning when Postfix
+        requests DNSSEC validation, but the infrastructure does not
+        validate DNSSEC signatures. File: makedefs.
+
+        The default "smtp_tls_dane_insecure_mx_policy = dane" was
+        causing unnecessary dnssec_probe activity. The default is now
+        "dane" when smtp_tls_security_level is "dane", otherwise it is
+        "may". File: global/mail_params.h.
+
+20210411
+
+	Missing null pointer checks (introduced: Postfix 3.4) after
+	an internal I/O error during the smtp(8) to tlsproxy(8)
+	handshake. Found by Coverity, reported by Jaroslav Skarvada.
+	Based on fix by Viktor Dukhovni. File: tls/tls_proxy_client_scan.c.
+
+	Null pointer bug (introduced: Postfix 3.0) and memory leak
+	(introduced: Postfix 3.4) after an inline: table syntax
+	error in main.cf or master.cf. Found by Coverity, reported
+	by Jaroslav Skarvada. Based on fix by Viktor Dukhovni. File:
+	util/dict_inline.c.
+
+	Incomplete null pointer check (introduced: Postfix 2.10)
+	after truncated HaProxy version 1 handshake message. Found
+	by Coverity, reported by Jaroslav Skarvada. Fix by Viktor
+	Dukhovni. File: global/haproxy_srvr.c.
+
+	Missing null pointer check (introduced: Postfix alpha) after
+	null argv[0] value. File: global/mail_task.c.
+
+20210601
+
+	Bugfix (introduced: Postfix 2.11): the command "postmap
+	lmdb:/file/name" handled duplicate keys ungracefully,
+	discarding entries stored up to and including the duplicate
+	key, and causing a double free() call with lmdb versions
+	0.9.17 and later. Reported by Adi Prasaja; double free()
+	root cause analysis by Howard Chu. File: util/slmdb.c.
+
+20210609
+
+	Typo (introduced: Postfix 3.4): silent_discard should be
+	silent-discard. File: proto/BDAT_README.html.
+
+20210612
+
+	Support for Postfix 3.6 compatibility_level syntax, to avoid
+	fatal runtime errors when rolling back from Postfix 3.6 to
+	an earlier supported version, or when sharing Postfix 3.6
+	configuration files with an earlier supported Postfix
+	version. File: global/mail_params.c.
+
+20210615
+
+	Bugfix (introduced: Postfix 3.4): the texthash: map
+	implementation did not support "postmap -F" behavior.
+	Reported by Christopher Gurnee, who also found the missing
+	code in the postmap source. File: util/dict_thash.c.
+
+20210623
+
+	Bugfix (introduced: 1999, Postfix 2.11) latent false "Result too
+	large" (ERANGE) errors because an strtol() call had no 'errno
+	= 0' statement before the call. Back-ported from Postfix 3.6.
+	Files: postscreen/postscreen_tests.c, util/mac_expand.c.
+
+20210705
+
+	Bugfix (introduced: Postfix 3.3): "null pointer read" error
+	in the cleanup daemon when "header_from_format = standard"
+	(the default as of Postfix 3.3) and email was submitted
+	with /usr/sbin/sendmail without From: header, and an all-space
+	full name was specified in 1) the password file, 2) with
+	"sendmail -F", or 3) with the NAME environment variable.
+	Found by Renaud Metrich. File: cleanup/cleanup_message.c.
+
+20210708
+
+	Bugfix (introduced: 1999): the Postfix SMTP server was
+	sending all session transcripts to the error_notice_recipient,
+	instead of sending transcripts of bounced mail to the
+	bounce_notice_recipient. File: smtpd/smtpd_chat.c.
+
+20210713
+
+	Bugfix (introduced: Postfix 2.4): false "too many reverse
+	jump" warnings in the showq daemon. The loop detection code
+	was comparing memory addresses instead of queue file names.
+	It now properly compares strings. Reported by Mehmet Avcioglu.
+	File: global/record.c.
+
+20210811
+
+	Bitrot: OpenSSL 3.x requires const. File: tls/tls_misc.c.
+
+20210925
+
+	Bugfix (bug introduced: Postfix 2.10): postconf -x produced
+	incorrect output, because different functions were implicitly
+	sharing a buffer for intermediate results. Reported
+	by raf, root cause analysis by Viktor Dukhovni. File:
+	postconf/postconf_builtin.c.
+
+20211030
+
+	Bugfix (problem introduced: Postfix 2.11): check_ccert_access
+	worked as expected, but produced a spurious warning when
+	Postfix was built without SASL support. Fix by Brad Barden.
+	File: smtpd/smtpd_check.c.
+
+20211105
+
+	Bugfix (introduced: Postfix 2.4): queue file corruption
+	after a Milter (for example, MIMEDefang) made a request to
+	replace the message body with a copy of that message body
+	plus additional text (for example, a SpamAssassin report).
+
+	The most likely impacts were a) the queue manager reporting
+	a fatal error resulting in email delivery delays, or b) the
+	queue manager reporting the corruption and moving the message
+	to the corrupt queue for damaged messages.
+
+	However, a determined adversary could craft an email message
+	that would trigger the bug, and insert a content filter
+	destination or a redirect email address into its queue file.
+	Postfix would then deliver the message headers there, in
+	most cases without delivering the message body. With enough
+	experimentation, an attacker could make Postfix deliver
+	both the message headers and body.
+
+	The details of a successful attack depend on the Milter
+	implementation, and on the Postfix and Milter configuration
+	details; these can be determined remotely through
+	experimentation.  Failed experiments may be detected when
+	the queue manager terminates with a fatal error, or when
+	the queue manager moves damaged files to the "corrupt" queue
+	as evidence.
+
+	Technical details: when Postfix executes a "replace body"
+	Milter request it will reuse queue file storage that was
+	used by the existing email message body. If the new body
+	is larger, Postfix will append body content to the end of
+	the queue file. The corruption happened when a Milter (for
+	example, MIMEDefang) made a request to replace the body of
+	a message with a new body that contained a copy of the
+	original body plus some new text, and the original body
+	contained a line longer than $line_length_limit bytes (for
+	example, an image encoded in base64 without hard or soft
+	line breaks). In queue files, Postfix stores a long text
+	line as multiple records with up to $line_length_limit bytes
+	each. Unfortunately, Postfix's "replace body" support did
+	not account for the additional queue file space needed to
+	store the second etc.  record headers. And thus, the last
+	record(s) of a long text line could overwrite one or more
+	queue file records immediately after the space that was
+	previously occupied by the original message body.
+
+	Problem report by Benoît Panizzon.
+
+20211115
+
+	Bugfix (introduced: 20210708): duplicate bounce_notice_recipient
+	entries in postconf output. The fix to send SMTP session
+	transcripts to bounce_notice_recipient was incomplete.
+	Reported by Vincent Lefevre. File: smtpd/smtpd.c.
+
+20211216
+
+	Bugfix (introduced: Postfix 3.0): the proxymap daemon did
+	not automatically authorize proxied maps inside pipemap
+	(example: pipemap:{proxy:maptype:mapname, ...}) or inside
+	unionmap. Problem reported by Mirko Vogt. Files:
+	proxymap/proxymap.c.
+
+20211220
+
+	Bugfix (introduced: Postfix 2.5): off-by-one error while
+	writing a string terminator. This code had passed all memory
+	corruption tests, presumably because it wrote over an
+	alignment padding byte, or over an adjacent character byte
+	that was never read. Reported by Robert Siemer. Files:
+	*qmgr/qmgr_feedback.c.
+
+20211223
+
+	Cleanup: added missing _maps parameter names to the
+	proxy_read_maps default value, based on output from the
+	mantools/missing-proxy-read-maps script.  File:
+	global/mail_params.h.
+
+20220120
+
+	Bitrot: Glibc 2.34 implements closefrom(). File:
+	util/sys_defs.h.
+
+20220202
+
+	Bitrot: Berkeley DB 18 is like Berkeley DB 6. Yasuhiro
+	Kimura. File: util/dict_db.c.
+
+20220322
+
+	Cleanup: added missing _checks, _reply_footer, _reply_filter,
+	_command_filter, and _delivery_status_filter parameter names
+	to the proxy_read_maps default value. Files: global/mail_params.h,
+	mantools/missing-proxy-read-maps.
+
+20220404
+
+	Bugfix: in an internal client module, "host or service not
+	found" was a fatal error, causing the milter_default_action
+	setting to be ignored. It is now a non-fatal error. The
+	same client is used by many Postfix clients (smtpd_proxy,
+	dovecot auth, tcp_table, memcache, socketmap, and so on).
+	Problem reported by Christian Degenkolb. File: util/inet_connect.c.
+
+20220415
+
+	Cleanup (problem introduced: Postfix 3.0): with dynamic map
+	loading enabled, an attempt to create a map with "postmap
+	regexp:path" would result in a bogus error message "Is the
+	postfix-regexp package installed?" instead of "unsupported
+	map type for this operation". This happened with all built-in
+	map types (static, cidr, etc.) that have no 'bulk create'
+	support. Problem reported by Greg Klanderman. File:
+	global/dynamicmaps.c.
+
+20220417
+
+	Cleanup (problem introduced: Postfix 2.7): milter_header_checks
+	maps are now opened before the cleanup server enters the
+	chroot jail. Problem reported by Jesper Dybdal. Files:
+	cleanup/cleanup.h, cleanup/cleanup_init.c,
+	cleanup/cleanup_milter.c, cleanup/cleanup_state.c.
+
+20220719
+
+	Cleanup: Postfix 3.5.0 introduced debug logging noise in
+	map_search_create(). Files: global/map_search.c.
+
+20220724
+
+	Workaround: in a TLS server disable Postfix's 1-element
+	internal session cache, to work around an OpenSSL 3.0
+	regression that broke TLS handshakes. It is rarely useful.
+	Report by Spil Oss, fix by Viktor Dukhovni. File:
+	tls/tls_server.c.
+
+20220905
+
+	Cleanup: Postfix 3.3.0 introduced an uninitialized
+	verify_append() request status in case of a null original
+	recipient address.  File: global/verify.c.
+
+20220906
+
+	Cleanup: Postfix 3.5.16 introduced a missing msg_panic()
+	argument (in code that never executes). File:
+	cleanup/cleanup_milter.c.
+
+20221128
+
+	Bugfix (introduced: Postfix 2.2): the smtpd_proxy_client
+	code mis-parsed the last XFORWARD attribute name in the
+	SMTP server's EHLO response. The result was that the
+	smtpd_proxy_client code failed to forward the IDENT attribute.
+	Fix by Andreas Weigel. File: smtpd/smtpd_proxy.c.
+
+20221201
+
+	Portability: LINUX6 support. Files: makedefs, util/sys_defs.h.
+
+20221207
+
+	Workaround: OpenSSL 3.x EVP_get_digestbyname() can return
+	lazily bound handles that may fail to work when one attempts
+	to use them, because no provider search happens until one
+	constructs an actual operation context. In sufficiently
+	hostile configurations, Postfix could mistakenly believe
+	that an algorithm is available, when in fact it is not. A
+	similar workaround may be needed for EVP_get_cipherbyname().
+	Fix by Viktor Dukhovni. Files: tls/tls.h, tls/tls_dane.c,
+	tls/tls_fprint.c, tls/tls_misc.c.
+
+	Bugfix (introduced: Postfix 2.11): the checkok() macro in
+	tls/tls_fprint.c evaluated its argument unconditionally;
+	it should evaluate the argument only if there was no prior
+	error. Found during code review. File: tls/tls_fprint.c.
+
+20221215
+
+	Foolproofing: postscreen segfault with postscreen_dnsbl_threshold
+	< 1. It should reject such input with a fatal error instead.
+	Discovered by Benny Pedersen. File: postscreen/postscreen.c.
+
+20230103
+
+	Bugfix (introduced: Postfix 2.7): the verify daemon logged
+	a garbled cache name when terminating a cache scan in
+	progress. Reported by Phil Biggs, fix by Viktor Dukhovni.
+	File: util/dict_cache.c.
+
+	Bitrot: fixes for linker warnings from newer Darwin (MacOS)
+	versions. Viktor Dukhovni. File: makedefs.
+
+20230115
+
+	Workaround: STRREF() macro to shut up compiler warnings for
+	legitimate string comparison expressions. Back-ported from
+	Postfix 3.6 and later. Files: util/stringops.h, flush/flush.c.
+
+	Workaround for a breaking change in OpenSSL 3: always turn
+	on SSL_OP_IGNORE_UNEXPECTED_EOF, to avoid warning messages
+	and missed opportunities for TLS session reuse. This is
+	safe because the SMTP protocol implements application-level
+	framing, and is therefore not affected by TLS truncation
+	attacks. Fix by Viktor Dukhovni. Files: tls/tls.h, tls_client.c,
+	tls/tls_server.c.
+
+20230125
+
+	Portability: the EVP_get_digestbyname change broke OpenSSL
+	1.0.2 support. File: tls/tls.h.
+
+20230127
+
+	Bugfix (introduced: Postfix 3.4): the posttls-finger command
+	failed to detect that a connection was resumed in the case
+	that a server did not return a certificate. Viktor Dukhovni.
+	File: posttls-finger/posttls-finger.c.
+
+	Workaround: OpenSSL 3.x EVP_get_cipherbyname() can return
+	lazily-bound handles. Postfix now checks that the expected
+	functionality will be available instead of failing later.
+	Fix by Viktor Dukhovni. File: tls/tls_server.c.
+
+	Portability: MacOS support for the postfix-env.sh test
+	script.
+
+20230314
+
+	Bugfix (introduced: Postfix 3.5): check_ccert_access did
+	not parse inline map specifications. Report and fix by Sean
+	Gallagher. File: global/map_search.c.
+
+20230330
+
+	Safety: the long form "{ name = value }" in import_environment
+	or export_environment is not documented, but accepted, and
+	it was stored in the process environment as the invalid
+	form "name = value", thus not setting or overriding an entry
+	for "name". This form is now stored as the expected
+	"name=value". Found during code maintenance. Also refined
+	the "missing attribute name" detection. Files: clean_env.c,
+	split_nameval.c.
+
+20230418
+
+	Bugfix (introduced: Postfix 3.2): the MySQL client could
+	return "not found" instead of "error" during the time that
+	all MySQL server connections were turned down after error.
+	Found during code maintenance. File: global/dict_mysql.c.
+
+20230428
+
+	Bugfix (defect introduced: Postfix 1.0): the command "postconf
+	.. name=v1 .. name=v2 .." (multiple instances of the same
+	parameter name) created multiple name=value entries with
+	the same parameter name. It now logs a warning and skips
+	the earlier update. Found during code maintenance. File:
+	postconf/postconf_edit.c
+
+	Bugfix (defect introduced: Postfix 3.3): the command "postconf
+	-M name1/type1='name2 type2 ...'" died with a segmentation
+	violation when the request matched multiple master.cf
+	entries. The master.cf file was not damaged. Problem reported
+	by SATOH Fumiyasu. File: postconf/postconf_master.c.
+
+20230502
+
+	Bugfix (defect introduced: Postfix 2.11): the command
+	"postconf -M name1/type1='name2 type2 ...'" could add a
+	service definition to master.cf that conflicted with an
+	already existing service definition. It now replaces all
+	existing service definitions that match the service pattern
+	'name1/type1' or the service name and type in 'name2 type2
+	...' with a single service definition 'name2 type2 ...'.
+	Problem reported by SATOH Fumiyasu. File: postconf/postconf_edit.c.
+
+20230519
+
+	Bitrot: preliminary support for OpenSSL configuration files,
+	primarily OpenSSL 1.1.1b and later. This introduces new
+	parameters "tls_config_file" and "tls_config_name", which
+	can be used to limit collateral damage from OS distributions
+	that crank up security to 11, increasing the number of
+	plaintext email deliveries. Details are in the postconf(5)
+	manpage under "tls_config_file" and "tls_config_name".
+	Viktor Dukhovni. Files: mantools/postlink, proto/postconf.proto,
+	global/mail_params.h, posttls-finger/posttls-finger.c,
+	smtp/smtp.c, smtp/smtp_proto.c, tls/tls_client.c, tls/tls.h,
+	tls/tls_misc.c, tls/tls_proxy_client_print.c,
+	tls/tls_proxy_client_scan.c, tls/tls_proxy.h, tls/tls_server.c,
+	tlsproxy/tlsproxy.c.
+
+20230523
+
+	Cleanup: use TLS_CLIENT_PARAMS to pass the OpensSSL 'init'
+	configurations. This information is independent from the
+	client or server TLS context, and therefore does not belong
+	in tls_*_init() or tls_*_start() calls. The tlsproxy(8)
+	server uses TLS_CLIENT_PARAMS to report differences between
+	its own global TLS settings, and those from its clients.
+	Files: posttls-finger/posttls-finger.c, smtp/smtp.c,
+	smtp/smtp_proto.c, tls/tls.h, tls/tls_proxy_client_misc.c,
+	tls/tls_proxy_client_print.c, tls/tls_proxy_client_scan.c,
+	tls/tls_proxy.h, tlsproxy/tlsproxy.c.
+
+20230524
+
+	Cleanup: reverted cosmetic-only changes to minimize the
+	patch footprint for OpenSSL INI file support; updated daemon
+	manpages with the new tls_config_file and tls_config_name
+	configuration parameters. Files: smtp/smtp.c, smtpd/smtpd.c,
+	tls/tls_client.c, tls/tls.h, tls/tls_server.c, tlsproxy/tlsproxy.c,
+
+20230529
+
+	Cleanup: made OpenSSL 'default' INI file support error
+	handling consistent with OpenSSL default behavior. Viktor
+	Dukhovni. Files: proto/postconf.proto, tls/tls_misc.c.
+
+20230602
+
+	Backwards compatibility for stable releases that originally
+	had no OpenSSL INI support. Skip the new OpenSSL INI support
+	code, unless the Postfix configuration actually specifies
+	non-default tls_config_xxx settings. File: tls/tls_misc.c.
+
+	Cleanup: added a multiple initialization guard in the
+	tls_library_init() function, and made an initialization
+	error sticky. File: tls/tls_misc.c.
+
+20230605
+
+	Security: new parameter smtpd_forbid_unauth_pipelining
+	(default: no) to disconnect remote SMTP clients that violate
+	RFC 2920 (or 5321) command pipelining constraints. Files:
+	global/mail_params.h, smtpd/smtpd.c, proto/postconf.proto.
+
+20230815
+
+	Bugfix (bug introduced: 20140218): when opportunistic TLS fails
+	during or after the handshake, don't require that a probe
+	message spent a minimum time-in-queue before falling back to
+	plaintext. Problem reported by Serg. File: smtp/smtp.h.
+
+20230819
+
+	Bugfix (defect introduced: 19980207): the valid_hostname()
+	check in the Postfix DNS client library was blocking unusual
+	but legitimate wildcard names (*.name) in some DNS lookup
+	results and lookup requests. Examples:
+
+            name          class/type value
+            *.one.example   IN CNAME *.other.example
+            *.other.example IN A     10.0.0.1
+            *.other.example IN TLSA  ..certificate info...
+
+	Such syntax is blesed in RFC 1034 section 4.3.3.
+
+	This problem was reported first in the context of TLSA
+	record lookups. Files: util/valid_hostname.[hc],
+	dns/dns_lookup.c.
+
+20230929
+
+	Bugfix (defect introduced Postfix 2.5, 20080104): the Postfix
+	SMTP server was waiting for a client command instead of
+	replying immediately, after a client certificate verification
+	error in TLS wrappermode. Reported by Andreas Kinzler. File:
+	smtpd/smtpd.c.
+
+20231006
+
+	Usability: the Postfix SMTP server now attempts to log the
+	SASL username after authentication failure. In Postfix
+	logging, this appends ", sasl_username=xxx" after the reason
+	for SASL authentication failure. The logging replaces an
+	unavailable reason with "(reason unavailable)", and replaces
+	an unavailable sasl_username with "(unavailable)". Based
+	on code by Jozsef Kadlecsik. Files: xsasl/xsasl_server.c,
+	xsasl/xsasl_cyrus_server.c, smtpd/smtpd_sasl_glue.c.
+
+20231026
+
+	Bugfix (defect introduced: Postfix 2.11): in forward_path,
+	the expression ${recipient_delimiter} would expand to an
+	empty string when a recipient address had no recipient
+	delimiter. Fixed by restoring Postfix 2.10 behavior to use
+	a configured recipient delimiter value. Reported by Tod
+	A. Sandman. Files: proto/postconf.proto, local/local_expand.c.
+
+20240109
+
+	Security (outbound SMTP smuggling): with the default setting
+	"cleanup_replace_stray_cr_lf = yes" Postfix will replace
+	stray <CR> or <LF> characters in message content with a
+	space character. This prevents Postfix from enabling
+	outbound (remote) SMTP smuggling, and it also makes evaluation
+	of Postfix-added DKIM etc. signatures independent from how
+	a remote mail server handles stray <CR> or <LF> characters.
+	Files: global/mail_params.h, cleanup/cleanup.c,
+	cleanup/cleanup_message.c, mantools/postlink, proto/postconf.proto.
+
+20240112
+
+	Security (inbound SMTP smuggling): with "smtpd_forbid_bare_newline
+	= normalize" (default "no" for Postfix < 3.9), the Postfix
+	SMTP server requires the standard End-of-DATA sequence
+	<CR><LF>.<CR><LF>, and otherwise allows command or message
+	content lines ending in the non-standard <LF>, processing
+	them as if the client sent the standard <CR><LF>.
+
+	The alternative setting, "smtpd_forbid_bare_newline = reject"
+	will reject any command or message that contains a bare
+	<LF>, and is more likely to cause problems with legitimate
+	clients.
+
+	For backwards compatibility, local clients are excluded by
+	default with "smtpd_forbid_bare_newline_exclusions =
+	$mynetworks".
+
+	Files: mantools/postlink, proto/postconf.proto,
+	global/mail_params.h, global/smtp_stream.c, global/smtp_stream.h,
+	smtpd/smtpd.c, smtpd/smtpd_check.[hc].