Adding upstream version 3.4.23.upstream/3.4.23upstream

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

1 files changed, 482 insertions, 0 deletions

diff --git a/man/man8/cleanup.8 b/man/man8/cleanup.8
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+.TH CLEANUP 8 
+.ad
+.fi
+.SH NAME
+cleanup
+\-
+canonicalize and enqueue Postfix message
+.SH "SYNOPSIS"
+.na
+.nf
+\fBcleanup\fR [generic Postfix daemon options]
+.SH DESCRIPTION
+.ad
+.fi
+The \fBcleanup\fR(8) daemon processes inbound mail, inserts it
+into the \fBincoming\fR mail queue, and informs the queue
+manager of its arrival.
+
+The \fBcleanup\fR(8) daemon always performs the following transformations:
+.IP \(bu
+Insert missing message headers: (\fBResent\-\fR) \fBFrom:\fR,
+\fBTo:\fR, \fBMessage\-Id:\fR, and \fBDate:\fR.
+.IP \(bu
+Transform envelope and header addresses to the standard
+\fIuser@fully\-qualified\-domain\fR form that is expected by other
+Postfix programs.
+This task is delegated to the \fBtrivial\-rewrite\fR(8) daemon.
+.IP \(bu
+Eliminate duplicate envelope recipient addresses.
+.IP \(bu
+Remove message headers: \fBBcc\fR, \fBContent\-Length\fR,
+\fBResent\-Bcc\fR, \fBReturn\-Path\fR.
+.PP
+The following address transformations are optional:
+.IP \(bu
+Optionally, rewrite all envelope and header addresses according
+to the mappings specified in the \fBcanonical\fR(5) lookup tables.
+.IP \(bu
+Optionally, masquerade envelope sender addresses and message
+header addresses (i.e. strip host or domain information below
+all domains listed in the \fBmasquerade_domains\fR parameter,
+except for user names listed in \fBmasquerade_exceptions\fR).
+By default, address masquerading does not affect envelope recipients.
+.IP \(bu
+Optionally, expand envelope recipients according to information
+found in the \fBvirtual\fR(5) lookup tables.
+.PP
+The \fBcleanup\fR(8) daemon performs sanity checks on the content of
+each message. When it finds a problem, by default it returns a
+diagnostic status to the client, and leaves it up to the client
+to deal with the problem. Alternatively, the client can request
+the \fBcleanup\fR(8) daemon to bounce the message back to the sender
+in case of trouble.
+.SH "STANDARDS"
+.na
+.nf
+RFC 822 (ARPA Internet Text Messages)
+RFC 2045 (MIME: Format of Internet Message Bodies)
+RFC 2046 (MIME: Media Types)
+RFC 2822 (Internet Message Format)
+RFC 3463 (Enhanced Status Codes)
+RFC 3464 (Delivery status notifications)
+RFC 5322 (Internet Message Format)
+.SH DIAGNOSTICS
+.ad
+.fi
+Problems and transactions are logged to \fBsyslogd\fR(8)
+or \fBpostlogd\fR(8).
+.SH BUGS
+.ad
+.fi
+Table\-driven rewriting rules make it hard to express \fBif then
+else\fR and other logical relationships.
+.SH "CONFIGURATION PARAMETERS"
+.na
+.nf
+.ad
+.fi
+Changes to \fBmain.cf\fR are picked up automatically, as
+\fBcleanup\fR(8)
+processes run for only a limited amount of time. Use the command
+"\fBpostfix reload\fR" to speed up a change.
+
+The text below provides only a parameter summary. See
+\fBpostconf\fR(5) for more details including examples.
+.SH "COMPATIBILITY CONTROLS"
+.na
+.nf
+.ad
+.fi
+.IP "\fBundisclosed_recipients_header (see 'postconf -d' output)\fR"
+Message header that the Postfix \fBcleanup\fR(8) server inserts when a
+message contains no To: or Cc: message header.
+.PP
+Available in Postfix version 2.1 only:
+.IP "\fBenable_errors_to (no)\fR"
+Report mail delivery errors to the address specified with the
+non\-standard Errors\-To: message header, instead of the envelope
+sender address (this feature is removed with Postfix version 2.2, is
+turned off by default with Postfix version 2.1, and is always turned on
+with older Postfix versions).
+.PP
+Available in Postfix version 2.6 and later:
+.IP "\fBalways_add_missing_headers (no)\fR"
+Always add (Resent\-) From:, To:, Date: or Message\-ID: headers
+when not present.
+.PP
+Available in Postfix version 2.9 and later:
+.IP "\fBenable_long_queue_ids (no)\fR"
+Enable long, non\-repeating, queue IDs (queue file names).
+.PP
+Available in Postfix version 3.0 and later:
+.IP "\fBmessage_drop_headers (bcc, content\-length, resent\-bcc, return\-path)\fR"
+Names of message headers that the \fBcleanup\fR(8) daemon will remove
+after applying \fBheader_checks\fR(5) and before invoking Milter applications.
+.SH "BUILT-IN CONTENT FILTERING CONTROLS"
+.na
+.nf
+.ad
+.fi
+Postfix built\-in content filtering is meant to stop a flood of
+worms or viruses. It is not a general content filter.
+.IP "\fBbody_checks (empty)\fR"
+Optional lookup tables for content inspection as specified in
+the \fBbody_checks\fR(5) manual page.
+.IP "\fBheader_checks (empty)\fR"
+Optional lookup tables for content inspection of primary non\-MIME
+message headers, as specified in the \fBheader_checks\fR(5) manual page.
+.PP
+Available in Postfix version 2.0 and later:
+.IP "\fBbody_checks_size_limit (51200)\fR"
+How much text in a message body segment (or attachment, if you
+prefer to use that term) is subjected to body_checks inspection.
+.IP "\fBmime_header_checks ($header_checks)\fR"
+Optional lookup tables for content inspection of MIME related
+message headers, as described in the \fBheader_checks\fR(5) manual page.
+.IP "\fBnested_header_checks ($header_checks)\fR"
+Optional lookup tables for content inspection of non\-MIME message
+headers in attached messages, as described in the \fBheader_checks\fR(5)
+manual page.
+.PP
+Available in Postfix version 2.3 and later:
+.IP "\fBmessage_reject_characters (empty)\fR"
+The set of characters that Postfix will reject in message
+content.
+.IP "\fBmessage_strip_characters (empty)\fR"
+The set of characters that Postfix will remove from message
+content.
+.SH "BEFORE QUEUE MILTER CONTROLS"
+.na
+.nf
+.ad
+.fi
+As of version 2.3, Postfix supports the Sendmail version 8
+Milter (mail filter) protocol. When mail is not received via
+the smtpd(8) server, the cleanup(8) server will simulate
+SMTP events to the extent that this is possible. For details
+see the MILTER_README document.
+.IP "\fBnon_smtpd_milters (empty)\fR"
+A list of Milter (mail filter) applications for new mail that
+does not arrive via the Postfix \fBsmtpd\fR(8) server.
+.IP "\fBmilter_protocol (6)\fR"
+The mail filter protocol version and optional protocol extensions
+for communication with a Milter application; prior to Postfix 2.6
+the default protocol is 2.
+.IP "\fBmilter_default_action (tempfail)\fR"
+The default action when a Milter (mail filter) application is
+unavailable or mis\-configured.
+.IP "\fBmilter_macro_daemon_name ($myhostname)\fR"
+The {daemon_name} macro value for Milter (mail filter) applications.
+.IP "\fBmilter_macro_v ($mail_name $mail_version)\fR"
+The {v} macro value for Milter (mail filter) applications.
+.IP "\fBmilter_connect_timeout (30s)\fR"
+The time limit for connecting to a Milter (mail filter)
+application, and for negotiating protocol options.
+.IP "\fBmilter_command_timeout (30s)\fR"
+The time limit for sending an SMTP command to a Milter (mail
+filter) application, and for receiving the response.
+.IP "\fBmilter_content_timeout (300s)\fR"
+The time limit for sending message content to a Milter (mail
+filter) application, and for receiving the response.
+.IP "\fBmilter_connect_macros (see 'postconf -d' output)\fR"
+The macros that are sent to Milter (mail filter) applications
+after completion of an SMTP connection.
+.IP "\fBmilter_helo_macros (see 'postconf -d' output)\fR"
+The macros that are sent to Milter (mail filter) applications
+after the SMTP HELO or EHLO command.
+.IP "\fBmilter_mail_macros (see 'postconf -d' output)\fR"
+The macros that are sent to Milter (mail filter) applications
+after the SMTP MAIL FROM command.
+.IP "\fBmilter_rcpt_macros (see 'postconf -d' output)\fR"
+The macros that are sent to Milter (mail filter) applications
+after the SMTP RCPT TO command.
+.IP "\fBmilter_data_macros (see 'postconf -d' output)\fR"
+The macros that are sent to version 4 or higher Milter (mail
+filter) applications after the SMTP DATA command.
+.IP "\fBmilter_unknown_command_macros (see 'postconf -d' output)\fR"
+The macros that are sent to version 3 or higher Milter (mail
+filter) applications after an unknown SMTP command.
+.IP "\fBmilter_end_of_data_macros (see 'postconf -d' output)\fR"
+The macros that are sent to Milter (mail filter) applications
+after the message end\-of\-data.
+.PP
+Available in Postfix version 2.5 and later:
+.IP "\fBmilter_end_of_header_macros (see 'postconf -d' output)\fR"
+The macros that are sent to Milter (mail filter) applications
+after the end of the message header.
+.PP
+Available in Postfix version 2.7 and later:
+.IP "\fBmilter_header_checks (empty)\fR"
+Optional lookup tables for content inspection of message headers
+that are produced by Milter applications.
+.PP
+Available in Postfix version 3.1 and later:
+.IP "\fBmilter_macro_defaults (empty)\fR"
+Optional list of \fIname=value\fR pairs that specify default
+values for arbitrary macros that Postfix may send to Milter
+applications.
+.SH "MIME PROCESSING CONTROLS"
+.na
+.nf
+.ad
+.fi
+Available in Postfix version 2.0 and later:
+.IP "\fBdisable_mime_input_processing (no)\fR"
+Turn off MIME processing while receiving mail.
+.IP "\fBmime_boundary_length_limit (2048)\fR"
+The maximal length of MIME multipart boundary strings.
+.IP "\fBmime_nesting_limit (100)\fR"
+The maximal recursion level that the MIME processor will handle.
+.IP "\fBstrict_8bitmime (no)\fR"
+Enable both strict_7bit_headers and strict_8bitmime_body.
+.IP "\fBstrict_7bit_headers (no)\fR"
+Reject mail with 8\-bit text in message headers.
+.IP "\fBstrict_8bitmime_body (no)\fR"
+Reject 8\-bit message body text without 8\-bit MIME content encoding
+information.
+.IP "\fBstrict_mime_encoding_domain (no)\fR"
+Reject mail with invalid Content\-Transfer\-Encoding: information
+for the message/* or multipart/* MIME content types.
+.PP
+Available in Postfix version 2.5 and later:
+.IP "\fBdetect_8bit_encoding_header (yes)\fR"
+Automatically detect 8BITMIME body content by looking at
+Content\-Transfer\-Encoding: message headers; historically, this
+behavior was hard\-coded to be "always on".
+.SH "AUTOMATIC BCC RECIPIENT CONTROLS"
+.na
+.nf
+.ad
+.fi
+Postfix can automatically add BCC (blind carbon copy)
+when mail enters the mail system:
+.IP "\fBalways_bcc (empty)\fR"
+Optional address that receives a "blind carbon copy" of each message
+that is received by the Postfix mail system.
+.PP
+Available in Postfix version 2.1 and later:
+.IP "\fBsender_bcc_maps (empty)\fR"
+Optional BCC (blind carbon\-copy) address lookup tables, indexed
+by sender address.
+.IP "\fBrecipient_bcc_maps (empty)\fR"
+Optional BCC (blind carbon\-copy) address lookup tables, indexed by
+recipient address.
+.SH "ADDRESS TRANSFORMATION CONTROLS"
+.na
+.nf
+.ad
+.fi
+Address rewriting is delegated to the \fBtrivial\-rewrite\fR(8) daemon.
+The \fBcleanup\fR(8) server implements table driven address mapping.
+.IP "\fBempty_address_recipient (MAILER\-DAEMON)\fR"
+The recipient of mail addressed to the null address.
+.IP "\fBcanonical_maps (empty)\fR"
+Optional address mapping lookup tables for message headers and
+envelopes.
+.IP "\fBrecipient_canonical_maps (empty)\fR"
+Optional address mapping lookup tables for envelope and header
+recipient addresses.
+.IP "\fBsender_canonical_maps (empty)\fR"
+Optional address mapping lookup tables for envelope and header
+sender addresses.
+.IP "\fBmasquerade_classes (envelope_sender, header_sender, header_recipient)\fR"
+What addresses are subject to address masquerading.
+.IP "\fBmasquerade_domains (empty)\fR"
+Optional list of domains whose subdomain structure will be stripped
+off in email addresses.
+.IP "\fBmasquerade_exceptions (empty)\fR"
+Optional list of user names that are not subjected to address
+masquerading, even when their addresses match $masquerade_domains.
+.IP "\fBpropagate_unmatched_extensions (canonical, virtual)\fR"
+What address lookup tables copy an address extension from the lookup
+key to the lookup result.
+.PP
+Available before Postfix version 2.0:
+.IP "\fBvirtual_maps (empty)\fR"
+Optional lookup tables with a) names of domains for which all
+addresses are aliased to addresses in other local or remote domains,
+and b) addresses that are aliased to addresses in other local or
+remote domains.
+.PP
+Available in Postfix version 2.0 and later:
+.IP "\fBvirtual_alias_maps ($virtual_maps)\fR"
+Optional lookup tables that alias specific mail addresses or domains
+to other local or remote address.
+.PP
+Available in Postfix version 2.2 and later:
+.IP "\fBcanonical_classes (envelope_sender, envelope_recipient, header_sender, header_recipient)\fR"
+What addresses are subject to canonical_maps address mapping.
+.IP "\fBrecipient_canonical_classes (envelope_recipient, header_recipient)\fR"
+What addresses are subject to recipient_canonical_maps address
+mapping.
+.IP "\fBsender_canonical_classes (envelope_sender, header_sender)\fR"
+What addresses are subject to sender_canonical_maps address
+mapping.
+.IP "\fBremote_header_rewrite_domain (empty)\fR"
+Don't rewrite message headers from remote clients at all when
+this parameter is empty; otherwise, rewrite message headers and
+append the specified domain name to incomplete addresses.
+.SH "RESOURCE AND RATE CONTROLS"
+.na
+.nf
+.ad
+.fi
+.IP "\fBduplicate_filter_limit (1000)\fR"
+The maximal number of addresses remembered by the address
+duplicate filter for \fBaliases\fR(5) or \fBvirtual\fR(5) alias expansion, or
+for \fBshowq\fR(8) queue displays.
+.IP "\fBheader_size_limit (102400)\fR"
+The maximal amount of memory in bytes for storing a message header.
+.IP "\fBhopcount_limit (50)\fR"
+The maximal number of Received:  message headers that is allowed
+in the primary message headers.
+.IP "\fBin_flow_delay (1s)\fR"
+Time to pause before accepting a new message, when the message
+arrival rate exceeds the message delivery rate.
+.IP "\fBmessage_size_limit (10240000)\fR"
+The maximal size in bytes of a message, including envelope information.
+.PP
+Available in Postfix version 2.0 and later:
+.IP "\fBheader_address_token_limit (10240)\fR"
+The maximal number of address tokens are allowed in an address
+message header.
+.IP "\fBmime_boundary_length_limit (2048)\fR"
+The maximal length of MIME multipart boundary strings.
+.IP "\fBmime_nesting_limit (100)\fR"
+The maximal recursion level that the MIME processor will handle.
+.IP "\fBqueue_file_attribute_count_limit (100)\fR"
+The maximal number of (name=value) attributes that may be stored
+in a Postfix queue file.
+.PP
+Available in Postfix version 2.1 and later:
+.IP "\fBvirtual_alias_expansion_limit (1000)\fR"
+The maximal number of addresses that virtual alias expansion produces
+from each original recipient.
+.IP "\fBvirtual_alias_recursion_limit (1000)\fR"
+The maximal nesting depth of virtual alias expansion.
+.PP
+Available in Postfix version 3.0 and later:
+.IP "\fBvirtual_alias_address_length_limit (1000)\fR"
+The maximal length of an email address after virtual alias expansion.
+.SH "SMTPUTF8 CONTROLS"
+.na
+.nf
+.ad
+.fi
+Preliminary SMTPUTF8 support is introduced with Postfix 3.0.
+.IP "\fBsmtputf8_enable (yes)\fR"
+Enable preliminary SMTPUTF8 support for the protocols described
+in RFC 6531..6533.
+.IP "\fBsmtputf8_autodetect_classes (sendmail, verify)\fR"
+Detect that a message requires SMTPUTF8 support for the specified
+mail origin classes.
+.PP
+Available in Postfix version 3.2 and later:
+.IP "\fBenable_idna2003_compatibility (no)\fR"
+Enable 'transitional' compatibility between IDNA2003 and IDNA2008,
+when converting UTF\-8 domain names to/from the ASCII form that is
+used for DNS lookups.
+.SH "MISCELLANEOUS CONTROLS"
+.na
+.nf
+.ad
+.fi
+.IP "\fBconfig_directory (see 'postconf -d' output)\fR"
+The default location of the Postfix main.cf and master.cf
+configuration files.
+.IP "\fBdaemon_timeout (18000s)\fR"
+How much time a Postfix daemon process may take to handle a
+request before it is terminated by a built\-in watchdog timer.
+.IP "\fBdelay_logging_resolution_limit (2)\fR"
+The maximal number of digits after the decimal point when logging
+sub\-second delay values.
+.IP "\fBdelay_warning_time (0h)\fR"
+The time after which the sender receives a copy of the message
+headers of mail that is still queued.
+.IP "\fBipc_timeout (3600s)\fR"
+The time limit for sending or receiving information over an internal
+communication channel.
+.IP "\fBmax_idle (100s)\fR"
+The maximum amount of time that an idle Postfix daemon process waits
+for an incoming connection before terminating voluntarily.
+.IP "\fBmax_use (100)\fR"
+The maximal number of incoming connections that a Postfix daemon
+process will service before terminating voluntarily.
+.IP "\fBmyhostname (see 'postconf -d' output)\fR"
+The internet hostname of this mail system.
+.IP "\fBmyorigin ($myhostname)\fR"
+The domain name that locally\-posted mail appears to come
+from, and that locally posted mail is delivered to.
+.IP "\fBprocess_id (read\-only)\fR"
+The process ID of a Postfix command or daemon process.
+.IP "\fBprocess_name (read\-only)\fR"
+The process name of a Postfix command or daemon process.
+.IP "\fBqueue_directory (see 'postconf -d' output)\fR"
+The location of the Postfix top\-level queue directory.
+.IP "\fBsoft_bounce (no)\fR"
+Safety net to keep mail queued that would otherwise be returned to
+the sender.
+.IP "\fBsyslog_facility (mail)\fR"
+The syslog facility of Postfix logging.
+.IP "\fBsyslog_name (see 'postconf -d' output)\fR"
+A prefix that is prepended to the process name in syslog
+records, so that, for example, "smtpd" becomes "prefix/smtpd".
+.PP
+Available in Postfix version 2.1 and later:
+.IP "\fBenable_original_recipient (yes)\fR"
+Enable support for the original recipient address after an
+address is rewritten to a different address (for example with
+aliasing or with canonical mapping).
+.PP
+Available in Postfix 3.3 and later:
+.IP "\fBservice_name (read\-only)\fR"
+The master.cf service name of a Postfix daemon process.
+.SH "FILES"
+.na
+.nf
+/etc/postfix/canonical*, canonical mapping table
+/etc/postfix/virtual*, virtual mapping table
+.SH "SEE ALSO"
+.na
+.nf
+trivial\-rewrite(8), address rewriting
+qmgr(8), queue manager
+header_checks(5), message header content inspection
+body_checks(5), body parts content inspection
+canonical(5), canonical address lookup table format
+virtual(5), virtual alias lookup table format
+postconf(5), configuration parameters
+master(5), generic daemon options
+master(8), process manager
+postlogd(8), Postfix logging
+syslogd(8), system logging
+.SH "README FILES"
+.na
+.nf
+.ad
+.fi
+Use "\fBpostconf readme_directory\fR" or
+"\fBpostconf html_directory\fR" to locate this information.
+.na
+.nf
+ADDRESS_REWRITING_README Postfix address manipulation
+CONTENT_INSPECTION_README content inspection
+.SH "LICENSE"
+.na
+.nf
+.ad
+.fi
+The Secure Mailer license must be distributed with this software.
+.SH "AUTHOR(S)"
+.na
+.nf
+Wietse Venema
+IBM T.J. Watson Research
+P.O. Box 704
+Yorktown Heights, NY 10598, USA
+
+Wietse Venema
+Google, Inc.
+111 8th Avenue
+New York, NY 10011, USA