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RedHat 9 (Linux i386) - man page for cleanup (redhat section 8)

CLEANUP(8)			     System Manager's Manual			       CLEANUP(8)

NAME
       cleanup - canonicalize and enqueue Postfix message

SYNOPSIS
       cleanup [generic Postfix daemon options]

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

       The cleanup daemon always performs the following transformations:

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

       o      Extract envelope recipient addresses from (Resent-) To:, Cc: and Bcc: message head-
	      ers when no recipients are specified in the message envelope.

       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 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  daemon
       to bounce the message back to the sender in case of trouble.

STANDARDS
       RFC 822 (ARPA Internet Text Messages)

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
       The following main.cf parameters are especially relevant to this program. See the  Postfix
       main.cf	file  for  syntax  details and for default values. Use the postfix reload command
       after a configuration change.

Content filtering
       body_checks
	      Lookup tables with content filters for message body lines.  These filters see phys-
	      ical lines one at a time, in chunks of at most line_length_limit bytes.

       header_checks
	      Lookup  tables  with  content  filters for message header lines.	These filters see
	      logical headers one at a time, including headers that span multiple lines.

Miscellaneous
       always_bcc
	      Address to send a copy of each message that enters the system.

       hopcount_limit
	      Limit the number of Received: message headers.

       undisclosed_recipients_header
	      The header line that is inserted when no recipients were specified in  (Resent-)To:
	      or (Resent-)Cc: message headers.

Address transformations
       empty_address_recipient
	      The  destination	for  undeliverable mail from <>. This substitution is done before
	      all other address rewriting.

       canonical_maps
	      Address mapping lookup table for sender and recipient addresses  in  envelopes  and
	      headers.

       recipient_canonical_maps
	      Address mapping lookup table for envelope and header recipient addresses.

       sender_canonical_maps
	      Address mapping lookup table for envelope and header sender addresses.

       masquerade_classes
	      List  of	address classes subject to masquerading: zero or more of envelope_sender,
	      envelope_recipient, header_sender, header_recipient.

       masquerade_domains
	      List of domains that hide their subdomain structure.

       masquerade_exceptions
	      List of user names that are not subject to address masquerading.

       virtual_maps
	      Address mapping lookup table for envelope recipient addresses.

Resource controls
       duplicate_filter_limit
	      Limit the number of envelope recipients that are remembered.

       header_size_limit
	      Limit the amount of memory in bytes used to process a message header.

       in_flow_delay
	      Amount of time to pause before accepting a message, when the message  arrival  rate
	      exceeds the message delivery rate.

       extract_recipient_limit
	      Limit the amount of recipients extracted from message headers.

SEE ALSO
       canonical(5) canonical address lookup table format
       qmgr(8) queue manager daemon
       syslogd(8) system logging
       trivial-rewrite(8) address rewriting
       virtual(5) virtual address lookup table format

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

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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