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NetBSD 6.1.5 - man page for cleanup (netbsd section 8)

CLEANUP(8)									       CLEANUP(8)

NAME
       cleanup - canonicalize and enqueue Postfix message

SYNOPSIS
       cleanup [generic Postfix daemon options]

DESCRIPTION
       The cleanup(8) daemon processes inbound mail, inserts it into the incoming mail queue, and
       informs the queue manager of its arrival.

       The cleanup(8) daemon always performs the following transformations:

       o      Insert missing message headers: (Resent-) From:, To:, Message-Id:, and Date:.

       o      Transform envelope and header addresses to the standard user@fully-qualified-domain
	      form  that  is  expected	by other Postfix programs.  This task is delegated to the
	      trivial-rewrite(8) daemon.

       o      Eliminate duplicate envelope recipient addresses.

       The following address transformations are optional:

       o      Optionally, rewrite all envelope and header addresses  according	to  the  mappings
	      specified in the canonical(5) lookup tables.

       o      Optionally, masquerade envelope sender addresses and message header addresses (i.e.
	      strip host or domain information below all domains listed in the masquerade_domains
	      parameter,  except  for  user  names listed in masquerade_exceptions).  By default,
	      address masquerading does not affect envelope recipients.

       o      Optionally, expand envelope recipients according to information found in	the  vir-
	      tual(5) lookup tables.

       The cleanup(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 cleanup(8)
       daemon to bounce the message back to the sender in case of trouble.

STANDARDS
       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)

DIAGNOSTICS
       Problems and transactions are logged to syslogd(8).

BUGS
       Table-driven rewriting rules make it hard to express if then else and other logical  rela-
       tionships.

CONFIGURATION PARAMETERS
       Changes	to  main.cf  are  picked up automatically, as cleanup(8) processes run for only a
       limited amount of time. Use the command "postfix reload" to speed up a change.

       The text below provides only a parameter summary. See postconf(5) for more details includ-
       ing examples.

COMPATIBILITY CONTROLS
       undisclosed_recipients_header (To: undisclosed-recipients:;)
	      Message  header  that the Postfix cleanup(8) server inserts when a message contains
	      no To: or Cc: message header.

       Available in Postfix version 2.1 only:

       enable_errors_to (no)
	      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).

       Available in Postfix version 2.6 and later:

       always_add_missing_headers (no)
	      Always add (Resent-) From:, To:, Date: or Message-ID: headers when not present.

BUILT-IN CONTENT FILTERING CONTROLS
       Postfix built-in content filtering is meant to stop a flood of worms or viruses. It is not
       a general content filter.

       body_checks (empty)
	      Optional lookup tables for content inspection as specified  in  the  body_checks(5)
	      manual page.

       header_checks (empty)
	      Optional	lookup tables for content inspection of primary non-MIME message headers,
	      as specified in the header_checks(5) manual page.

       Available in Postfix version 2.0 and later:

       body_checks_size_limit (51200)
	      How much text in a message body segment (or attachment, if you prefer to	use  that
	      term) is subjected to body_checks inspection.

       mime_header_checks ($header_checks)
	      Optional	lookup	tables for content inspection of MIME related message headers, as
	      described in the header_checks(5) manual page.

       nested_header_checks ($header_checks)
	      Optional lookup tables for  content  inspection  of  non-MIME  message  headers  in
	      attached messages, as described in the header_checks(5) manual page.

       Available in Postfix version 2.3 and later:

       message_reject_characters (empty)
	      The set of characters that Postfix will reject in message content.

       message_strip_characters (empty)
	      The set of characters that Postfix will remove from message content.

BEFORE QUEUE MILTER CONTROLS
       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 docu-
       ment.

       non_smtpd_milters (empty)
	      A list of Milter (mail filter) applications for new mail that does not  arrive  via
	      the Postfix smtpd(8) server.

       milter_protocol (6)
	      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.

       milter_default_action (tempfail)
	      The default action when a Milter (mail filter) application is unavailable  or  mis-
	      configured.

       milter_macro_daemon_name ($myhostname)
	      The {daemon_name} macro value for Milter (mail filter) applications.

       milter_macro_v ($mail_name $mail_version)
	      The {v} macro value for Milter (mail filter) applications.

       milter_connect_timeout (30s)
	      The  time limit for connecting to a Milter (mail filter) application, and for nego-
	      tiating protocol options.

       milter_command_timeout (30s)
	      The time limit for sending an SMTP command to a Milter (mail  filter)  application,
	      and for receiving the response.

       milter_content_timeout (300s)
	      The  time  limit for sending message content to a Milter (mail filter) application,
	      and for receiving the response.

       milter_connect_macros (see 'postconf -d' output)
	      The macros that are sent to Milter (mail filter) applications after  completion  of
	      an SMTP connection.

       milter_helo_macros (see 'postconf -d' output)
	      The  macros  that are sent to Milter (mail filter) applications after the SMTP HELO
	      or EHLO command.

       milter_mail_macros (see 'postconf -d' output)
	      The macros that are sent to Milter (mail filter) applications after the  SMTP  MAIL
	      FROM command.

       milter_rcpt_macros (see 'postconf -d' output)
	      The  macros  that are sent to Milter (mail filter) applications after the SMTP RCPT
	      TO command.

       milter_data_macros (see 'postconf -d' output)
	      The macros that are sent to version 4 or higher Milter (mail  filter)  applications
	      after the SMTP DATA command.

       milter_unknown_command_macros (see 'postconf -d' output)
	      The  macros  that are sent to version 3 or higher Milter (mail filter) applications
	      after an unknown SMTP command.

       milter_end_of_data_macros (see 'postconf -d' output)
	      The macros that are sent to Milter (mail filter)	applications  after  the  message
	      end-of-data.

       Available in Postfix version 2.5 and later:

       milter_end_of_header_macros (see 'postconf -d' output)
	      The  macros that are sent to Milter (mail filter) applications after the end of the
	      message header.

       Available in Postfix version 2.7 and later:

       milter_header_checks (empty)
	      Optional lookup tables for content inspection of message headers that are  produced
	      by Milter applications.

MIME PROCESSING CONTROLS
       Available in Postfix version 2.0 and later:

       disable_mime_input_processing (no)
	      Turn off MIME processing while receiving mail.

       mime_boundary_length_limit (2048)
	      The maximal length of MIME multipart boundary strings.

       mime_nesting_limit (100)
	      The maximal recursion level that the MIME processor will handle.

       strict_8bitmime (no)
	      Enable both strict_7bit_headers and strict_8bitmime_body.

       strict_7bit_headers (no)
	      Reject mail with 8-bit text in message headers.

       strict_8bitmime_body (no)
	      Reject 8-bit message body text without 8-bit MIME content encoding information.

       strict_mime_encoding_domain (no)
	      Reject  mail  with invalid Content-Transfer-Encoding: information for the message/*
	      or multipart/* MIME content types.

       Available in Postfix version 2.5 and later:

       detect_8bit_encoding_header (yes)
	      Automatically detect 8BITMIME body content by looking at Content-Transfer-Encoding:
	      message headers; historically, this behavior was hard-coded to be "always on".

AUTOMATIC BCC RECIPIENT CONTROLS
       Postfix can automatically add BCC (blind carbon copy) when mail enters the mail system:

       always_bcc (empty)
	      Optional	address  that  receives  a  "blind  carbon  copy" of each message that is
	      received by the Postfix mail system.

       Available in Postfix version 2.1 and later:

       sender_bcc_maps (empty)
	      Optional BCC (blind carbon-copy) address lookup tables, indexed by sender address.

       recipient_bcc_maps (empty)
	      Optional BCC (blind  carbon-copy)  address  lookup  tables,  indexed  by	recipient
	      address.

ADDRESS TRANSFORMATION CONTROLS
       Address	rewriting  is  delegated to the trivial-rewrite(8) daemon.  The cleanup(8) server
       implements table driven address mapping.

       empty_address_recipient (MAILER-DAEMON)
	      The recipient of mail addressed to the null address.

       canonical_maps (empty)
	      Optional address mapping lookup tables for message headers and envelopes.

       recipient_canonical_maps (empty)
	      Optional address mapping lookup tables for envelope and header recipient addresses.

       sender_canonical_maps (empty)
	      Optional address mapping lookup tables for envelope and header sender addresses.

       masquerade_classes (envelope_sender, header_sender, header_recipient)
	      What addresses are subject to address masquerading.

       masquerade_domains (empty)
	      Optional list of domains whose subdomain structure will be stripped  off	in  email
	      addresses.

       masquerade_exceptions (empty)
	      Optional	list  of  user names that are not subjected to address masquerading, even
	      when their address matches $masquerade_domains.

       propagate_unmatched_extensions (canonical, virtual)
	      What address lookup tables copy an address extension from the  lookup  key  to  the
	      lookup result.

       Available before Postfix version 2.0:

       virtual_maps (empty)
	      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.

       Available in Postfix version 2.0 and later:

       virtual_alias_maps ($virtual_maps)
	      Optional lookup tables that alias specific mail addresses or domains to other local
	      or remote address.

       Available in Postfix version 2.2 and later:

       canonical_classes (envelope_sender, envelope_recipient, header_sender, header_recipient)
	      What addresses are subject to canonical_maps address mapping.

       recipient_canonical_classes (envelope_recipient, header_recipient)
	      What addresses are subject to recipient_canonical_maps address mapping.

       sender_canonical_classes (envelope_sender, header_sender)
	      What addresses are subject to sender_canonical_maps address mapping.

       remote_header_rewrite_domain (empty)
	      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.

RESOURCE AND RATE CONTROLS
       duplicate_filter_limit (1000)
	      The maximal number of addresses remembered by  the  address  duplicate  filter  for
	      aliases(5) or virtual(5) alias expansion, or for showq(8) queue displays.

       header_size_limit (102400)
	      The maximal amount of memory in bytes for storing a message header.

       hopcount_limit (50)
	      The  maximal  number  of	Received:  message headers that is allowed in the primary
	      message headers.

       in_flow_delay (1s)
	      Time to pause before accepting a new message, when the message arrival rate exceeds
	      the message delivery rate.

       message_size_limit (10240000)
	      The maximal size in bytes of a message, including envelope information.

       Available in Postfix version 2.0 and later:

       header_address_token_limit (10240)
	      The maximal number of address tokens are allowed in an address message header.

       mime_boundary_length_limit (2048)
	      The maximal length of MIME multipart boundary strings.

       mime_nesting_limit (100)
	      The maximal recursion level that the MIME processor will handle.

       queue_file_attribute_count_limit (100)
	      The maximal number of (name=value) attributes that may be stored in a Postfix queue
	      file.

       Available in Postfix version 2.1 and later:

       virtual_alias_expansion_limit (1000)
	      The maximal number of addresses that virtual alias  expansion  produces  from  each
	      original recipient.

       virtual_alias_recursion_limit (1000)
	      The maximal nesting depth of virtual alias expansion.

MISCELLANEOUS CONTROLS
       config_directory (see 'postconf -d' output)
	      The default location of the Postfix main.cf and master.cf configuration files.

       daemon_timeout (18000s)
	      How  much  time  a Postfix daemon process may take to handle a request before it is
	      terminated by a built-in watchdog timer.

       delay_logging_resolution_limit (2)
	      The maximal number of digits after the decimal point when logging sub-second  delay
	      values.

       delay_warning_time (0h)
	      The  time after which the sender receives the message headers of mail that is still
	      queued.

       ipc_timeout (3600s)
	      The time limit for sending or receiving information over an internal  communication
	      channel.

       max_idle (100s)
	      The  maximum amount of time that an idle Postfix daemon process waits for an incom-
	      ing connection before terminating voluntarily.

       max_use (100)
	      The maximal number of incoming connections that a Postfix daemon process will  ser-
	      vice before terminating voluntarily.

       myhostname (see 'postconf -d' output)
	      The internet hostname of this mail system.

       myorigin ($myhostname)
	      The  domain  name  that  locally-posted mail appears to come from, and that locally
	      posted mail is delivered to.

       process_id (read-only)
	      The process ID of a Postfix command or daemon process.

       process_name (read-only)
	      The process name of a Postfix command or daemon process.

       queue_directory (see 'postconf -d' output)
	      The location of the Postfix top-level queue directory.

       soft_bounce (no)
	      Safety net to keep mail queued that would otherwise be returned to the sender.

       syslog_facility (mail)
	      The syslog facility of Postfix logging.

       syslog_name (see 'postconf -d' output)
	      The mail system name that is prepended to the process name in  syslog  records,  so
	      that "smtpd" becomes, for example, "postfix/smtpd".

       Available in Postfix version 2.1 and later:

       enable_original_recipient (yes)
	      Enable support for the X-Original-To message header.

FILES
       /etc/postfix/canonical*, canonical mapping table
       /etc/postfix/virtual*, virtual mapping table

SEE ALSO
       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
       syslogd(8), system logging

README FILES
       Use "postconf readme_directory" or "postconf html_directory" to locate this information.
       ADDRESS_REWRITING_README Postfix address manipulation
       CONTENT_INSPECTION_README content inspection

LICENSE
       The Secure Mailer license must be distributed with this software.

AUTHOR(S)
       Wietse Venema
       IBM T.J. Watson Research
       P.O. Box 704
       Yorktown Heights, NY 10598, USA

										       CLEANUP(8)


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