Adding upstream version 3.4.23.upstream/3.4.23upstream

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

1 files changed, 280 insertions, 0 deletions

diff --git a/RELEASE_NOTES-2.11 b/RELEASE_NOTES-2.11
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+The stable Postfix release is called postfix-2.11.x where 2=major
+release number, 11=minor release number, x=patchlevel.  The stable
+release never changes except for patches that address bugs or
+emergencies. Patches change the patchlevel and the release date.
+
+New features are developed in snapshot releases. These are called
+postfix-2.12-yyyymmdd where yyyymmdd is the release date (yyyy=year,
+mm=month, dd=day).  Patches are never issued for snapshot releases;
+instead, a new snapshot is released.
+
+The mail_release_date configuration parameter (format: yyyymmdd)
+specifies the release date of a stable release or snapshot release.
+
+If you upgrade from Postfix 2.9 or earlier, read RELEASE_NOTES-2.10
+before proceeding.
+
+Major changes - tls
+-------------------
+
+[Documentation 20131218] The new FORWARD_SECRECY_README document
+conveniently presents all information about Postfix "perfect" forward
+secrecy support in one place: what forward secrecy is, how to tweak
+settings, and what you can expect to see when Postfix uses ciphers
+with forward secrecy.
+
+[Feature 20130602] Support for PKI-less TLS server certificate
+verification, where the CA public key or the server certificate is
+identified via DNSSEC lookup.
+
+This feature introduces new TLS security levels called "dane" and
+"dane-only" (DNS-based Authentication of Named Entities) that use
+DNSSEC to look up CA or server certificate information.  The details
+of DANE core protocols are still evolving, as are the details of
+how DANE should be used in the context of SMTP. Postfix implements
+what appears to be a "rational" subset of the DANE profiles that
+is suitable for SMTP.
+
+The problem with conventional PKI is that there are literally
+hundreds of organizations world-wide that can provide a certificate
+in anyone's name. There have been widely-published incidents in
+recent history where a certificate authority gave out an inappropriate
+certificate (e.g., a certificate in the name of Microsoft to someone
+who did not represent Microsoft), where a CA was compromised (e.g.,
+DigiNotar, Comodo), or where a CA made operational mistakes (e.g.,
+TURKTRUST).  Another concern is that a legitimate CA might be coerced
+to provide a certificate that allows its government to play
+man-in-the-middle on TLS traffic and observe the plaintext.
+
+Major changes - LMDB database support
+-------------------------------------
+
+LMDB is a memory-mapped database that was originally developed as
+part of OpenLDAP. The Postfix LMDB driver was originally contributed
+by Howard Chu, LMDB's creator.
+
+LMDB can be used for all Postfix lookup tables and caches.  It is
+the first persistent Postfix database that can be shared among
+multiple writers such as postscreen daemons (Postfix already supported
+shared non-persistent memcached caches).  See lmdb_table(5) and
+LMDB_README for further information, including how to access Postfix
+LMDB databases with non-Postfix programs.
+
+Postfix currently requires LMDB version 0.9.11 or later. The minimum
+version may change over time in the light of deployment experience.
+
+Major changes - postscreen whitelisting
+---------------------------------------
+
+[Feature 20130512] Allow a remote SMTP client to skip postscreen(8)
+tests based on its postscreen_dnsbl_sites score.
+
+Specify a negative "postscreen_dnsbl_whitelist_threshold" value to
+enable this feature.  When a client passes the threshold value
+without having failed other tests, all pending or disabled tests
+are flagged as completed.
+
+This feature can mitigate the email delays due to "after 220 greeting"
+protocol tests, which otherwise require that a client reconnects
+before it can deliver mail. Some providers such as Google don't
+retry from the same IP address. This can result in large email
+delivery delays.
+
+Major changes - recipient_delimiter
+-----------------------------------
+
+[Feature 20130405] 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.
+
+For example, specify "recipient_delimiter = +-" to support both the
+Postfix-style "+" and the qmail-style "-" extension delimiter.  
+
+As before, this implementation recognizes one delimiter character
+per email address, and one address extension per email address.
+
+Major changes - smtpd access control
+------------------------------------
+
+[Feature 20131031] The check_sasl_access feature can be used to
+block hijacked logins. Like other check_mumble_access features it
+queries a lookup table (in this case with the SASL login name), and
+it supports the same actions as any Postfix access(5) table.
+
+[Feature 20130924] The reject_known_sender_login_mismatch feature
+applies reject_sender_login_mismatch only to MAIL FROM addresses
+that are known in $smtpd_sender_login_maps.
+
+Major changes - MacOS X
+-----------------------
+
+[Feature 20130325] Full support for kqueue() event handling which
+scales better with large numbers of file handles, plus a workaround
+for timeout handling on file handles (such as /dev/urandom) that
+still do not correctly support poll().
+
+Major changes - master
+----------------------
+
+[Incompat 20131217] The master_service_disable parameter value
+syntax has changed: use "service/type" instead of "service.type".
+The new form is consistent with postconf(1) namespaces for master.cf.
+The old form is still supported to avoid breaking existing
+configurations.
+
+Major changes - milter
+----------------------
+
+[Feature 20131126] Support for ESMTP parameters "NOTIFY" and "ORCPT"
+in the SMFIR_ADDRCPT_PAR (add recipient with parameters) request.
+Credits: Andrew Ayer.
+
+Major changes - mysql
+---------------------
+
+[Feature 20131117] MySQL client support for option_file, option_group,
+tls_cert_file, tls_key_file, tls_CAfile, tls_CApath, tls_verify_cert.
+Credits: Gareth Palmer.
+
+Major changes - postconf
+------------------------
+
+[Feature 20131217] Support for advanced master.cf query and update
+operations.  This was implemented primarily to support automated
+system management tools.
+
+The goal is to make all Postfix master.cf details accessible as
+lists of "name=value" pairs, where the names are organized into
+structured name spaces.  This allows other programs to query
+information or request updates, without having to worry about the
+exact layout of master.cf files.
+
+Managing master.cf service attributes
+-------------------------------------
+
+First, an example that shows the smtp/inet service in the traditional
+form:
+
+    $ postconf -M smtp/inet
+    smtp       inet  n       -       n       -       -       smtpd
+
+Different variants of this command show different amounts of output.
+For example, "postconf -M smtp" enumerates all services that have
+a name "smtp" and any service type ("inet", "unix", etc.), and
+"postconf -M" enumerates all master.cf services.  
+
+General rule: each name component that is not present becomes a "*"
+wildcard.
+
+Coming back to the above example, the postconf -F option can now
+enumerate the smtp/inet service fields as follows:
+
+    $ postconf -F smtp/inet
+    smtp/inet/service = smtp
+    smtp/inet/type = inet
+    smtp/inet/private = n
+    smtp/inet/unprivileged = -
+    smtp/inet/chroot = n
+    smtp/inet/wakeup = -
+    smtp/inet/process_limit = -
+    smtp/inet/command = smtpd
+
+This form makes it very easy to change one field in master.cf.
+For example to turn on chroot on the smtp/inet service you use:
+
+    $ postconf -F smtp/inet/chroot=y
+    $ postfix reload
+
+Moreover, with "-F" you can specify "*" for service name or service
+type to get a wild-card match.  For example, to turn off chroot on
+all Postfix daemons, use this:
+
+    $ postconf -F '*/*/chroot=n'
+    $ postfix reload
+
+Managing master.cf service "-o parameter=value" settings
+--------------------------------------------------------
+
+For a second example, let's look at the submission service.  This
+service typically has multiple "-o parameter=value" overrides. First
+the traditional view:
+
+    $ postconf -Mf submission
+    submission inet  n       -       n       -       -       smtpd
+        -o smtpd_tls_security_level=encrypt
+        -o smtpd_sasl_auth_enable=yes
+        ...
+
+The postconf -P option can now enumerate these parameters as follows:
+
+    $ postconf -P submission
+    submission/inet/smtpd_sasl_auth_enable = yes
+    submission/inet/smtpd_tls_security_level = encrypt
+    ...
+
+Again, this form makes it very easy to modify one parameter
+setting. For example, to change the smtpd_tls_security_level setting
+for the submission/inet service:
+
+    $ postconf -P 'submission/inet/smtpd_tls_security_level=may'
+
+You can create or remove a parametername=parametervalue setting:
+
+Create:
+    $ postconf -P 'submission/inet/parametername=parametervalue'
+
+Remove:
+    $ postconf -PX submission/inet/parametername
+
+Finally, always execute "postfix reload" after updating master.cf.
+
+Managing master.cf service entries
+----------------------------------
+
+Finally, adding master.cf entries is possible, but currently this
+does not yet have "advanced" support. It can only be done at the
+level of the traditional master.cf file format.
+
+Suppose that you need to configure a Postfix SMTP client that will
+handle slow email deliveries.  To implement this you need to clone
+the smtp/unix service settings and create a new delay/unix service.
+
+First, you would enumerate the smtp/unix service like this:
+
+    $ postconf -M smtp/unix
+    smtp      unix  -       -       n       -       -       smtp
+
+Then you would copy those fields (except the first field) by hand
+to create the delay/unix service:
+
+    $ postconf -M delay/unix="delay   unix   -   -   n   -   -   smtp"
+
+To combine the above steps in one command:
+
+    $ postconf -M delay/unix="`postconf -M smtp/unix|awk '{$1 = "delay"}'`"
+
+This is perhaps not super-convenient for manual cloning, but it
+should be sufficient for programmatic configuration management.
+
+Again, always execute "postfix reload" after updating master.cf.
+
+Deleting or commenting out master.cf entries
+--------------------------------------------
+
+The -X (delete entry) and -# (comment out entry) options already
+exist for main.cf, and they now also work work for entire master.cf
+entries:
+
+Remove main.cf or master.cf entry:
+    $ postconf -X parametername
+    $ postconf -MX delay/unix
+
+Comment out main.cf or master.cf entry:
+    $ postconf -# parametername
+    $ postconf -M# delay/unix
+
+As with main.cf, there is no support to "undo" master.cf changes
+that are made with -X or -#.
+
+Again, always execute "postfix reload" after updating master.cf.