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    Command:

    cleanup

    
    
    

    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:
    
           ?      Insert missing message headers: (Resent-) From:,  To:,  Message-
                  Id:, and Date:.
    
           ?      Transform   envelope   and  header  addresses  to  the  standard
                  user@fully-qualified-domain form that is expected by other Post-
                  fix  programs.  This task is delegated to the trivial-rewrite(8)
                  daemon.
    
           ?      Eliminate duplicate envelope recipient addresses.
    
           The following address transformations are optional:
    
           ?      Optionally, rewrite all envelope and header addresses  according
                  to the mappings specified in the canonical(5) lookup tables.
    
           ?      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.
    
           ?      Optionally,  expand envelope recipients according to information
                  found in the virtual(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 3463 (Enhanced Status Codes)
           RFC 3464 (Delivery status notifications)
    
    
    

    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 relationships.
           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) man-
                  ual 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  mes-
                  sage   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  con-
                  tent.
    
           message_strip_characters (empty)
                  The set of characters that Postfix will remove from message con-
                  sions  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) applica-
                  tions.
    
           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) applica-
                  tion, and for negotiating 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
    
           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 encod-
                  ing 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  Con-
                  tent-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.
    
    
           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   $masquer-
                  ade_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 map-
                  ping.
    
           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 dupli-
                  cate filter for aliases(5) or virtual(5) alias expansion, or for
                  showq(8) queue displays.
                  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  con-
                  figuration 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  log-
                  ging 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 incoming connection before terminating voluntarily.
    
           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, "post-
                  fix/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
    
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