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POSTSUPER(1)									     POSTSUPER(1)

NAME
       postsuper - Postfix superintendent

SYNOPSIS
       postsuper [-psv] [-c config_dir] [-d queue_id]
	       [-h queue_id] [-H queue_id]
	       [-r queue_id] [directory ...]

DESCRIPTION
       The postsuper(1) command does maintenance jobs on the Postfix queue. Use of the command is
       restricted to the superuser.  See the postqueue(1) command for unprivileged  queue  opera-
       tions such as listing or flushing the mail queue.

       By default, postsuper(1) performs the operations requested with the -s and -p command-line
       options on all Postfix queue directories - this includes the incoming, active and deferred
       directories  with  mail	files and the bounce, defer, trace and flush directories with log
       files.

       Options:

       -c config_dir
	      The main.cf configuration file is in the named directory	instead  of  the  default
	      configuration directory. See also the MAIL_CONFIG environment setting below.

       -d queue_id
	      Delete  one  message with the named queue ID from the named mail queue(s) (default:
	      hold, incoming, active and deferred).

	      If a queue_id of - is specified, the program reads queue IDs from  standard  input.
	      For example, to delete all mail with exactly one recipient user@example.com:

	      mailq | tail +2 | grep -v '^ *(' | awk  'BEGIN { RS = "" }
		  # $7=sender, $8=recipient1, $9=recipient2
		  { if ($8 == "user@example.com" && $9 == "")
			print $1 }
	      ' | tr -d '*!' | postsuper -d -

	      Specify  "-d ALL" to remove all messages; for example, specify "-d ALL deferred" to
	      delete all mail in the deferred queue.  As a safety measure, the word ALL  must  be
	      specified in upper case.

	      Warning:	Postfix  queue	IDs  are  reused.  There is a very small possibility that
	      postsuper deletes the wrong message file when it is executed while the Postfix mail
	      system is delivering mail.

	      The scenario is as follows:

	      1)     The  Postfix queue manager deletes the message that postsuper(1) is asked to
		     delete, because Postfix is finished with the message (it is delivered, or it
		     is returned to the sender).

	      2)     New mail arrives, and the new message is given the same queue ID as the mes-
		     sage that postsuper(1) is supposed to delete.  The probability for reusing a
		     deleted  queue  ID  is about 1 in 2**15 (the number of different microsecond
		     values that the system clock can distinguish within a second).

	      3)     postsuper(1) deletes the new message, instead of the  old	message  that  it
		     should have deleted.

       -h queue_id
	      Put mail "on hold" so that no attempt is made to deliver it.  Move one message with
	      the named queue ID from the named mail  queue(s)	(default:  incoming,  active  and
	      deferred) to the hold queue.

	      If a queue_id of - is specified, the program reads queue IDs from standard input.

	      Specify  "-h  ALL"  to hold all messages; for example, specify "-h ALL deferred" to
	      hold all mail in the deferred queue.  As a safety measure, the  word  ALL  must  be
	      specified in upper case.

	      Note: while mail is "on hold" it will not expire when its time in the queue exceeds
	      the maximal_queue_lifetime or bounce_queue_lifetime setting. It becomes subject  to
	      expiration after it is released from "hold".

	      This feature is available in Postfix 2.0 and later.

       -H queue_id
	      Release mail that was put "on hold".  Move one message with the named queue ID from
	      the named mail queue(s) (default: hold) to the deferred queue.

	      If a queue_id of - is specified, the program reads queue IDs from standard input.

	      Note: specify "postsuper -r" to release mail that was kept on hold for  a  signifi-
	      cant fraction of $maximal_queue_lifetime or $bounce_queue_lifetime, or longer.

	      Specify  "-H  ALL" to release all mail that is "on hold".  As a safety measure, the
	      word ALL must be specified in upper case.

	      This feature is available in Postfix 2.0 and later.

       -p     Purge old temporary files that are left over after system or software crashes.

       -r queue_id
	      Requeue the message with the named queue ID from the named mail queue(s)	(default:
	      hold, incoming, active and deferred).  To requeue multiple messages, specify multi-
	      ple -r command-line options.

	      Alternatively, if a queue_id of - is specified, the program reads  queue	IDs  from
	      standard input.

	      Specify "-r ALL" to requeue all messages. As a safety measure, the word ALL must be
	      specified in upper case.

	      A requeued message is moved to the maildrop queue, from where it is copied  by  the
	      pickup(8) and cleanup(8) daemons to a new queue file. In many respects its handling
	      differs from that of a new local submission.

	      o      The message is not subjected to the smtpd_milters or non_smtpd_milters  set-
		     tings.   When mail has passed through an external content filter, this would
		     produce incorrect results with Milter applications that depend  on  original
		     SMTP connection state information.

	      o      The  message  is subjected again to mail address rewriting and substitution.
		     This is useful when rewriting rules or virtual mappings have changed.

		     The address rewriting context (local or remote) is the same as when the mes-
		     sage was received.

	      o      The  message  is  subjected  to the same content_filter settings (if any) as
		     used for new local mail submissions.  This  is  useful  when  content_filter
		     settings have changed.

	      Warning:	Postfix  queue	IDs  are  reused.  There is a very small possibility that
	      postsuper(1) requeues the wrong message file when it is executed while the  Postfix
	      mail system is running, but no harm should be done.

	      This feature is available in Postfix 1.1 and later.

       -s     Structure  check	and  structure	repair.   This should be done once before Postfix
	      startup.

	      o      Rename files whose name does not match the message file inode  number.  This
		     operation	is  necessary  after  restoring  a  mail  queue  from a different
		     machine, or from backup media.

	      o      Move queue files that are in the wrong place in the  file	system	hierarchy
		     and  remove  subdirectories  that	are  no longer needed.	File position re-
		     arrangements are necessary after a change	in  the  hash_queue_names  and/or
		     hash_queue_depth configuration parameters.

       -v     Enable  verbose  logging for debugging purposes. Multiple -v options make the soft-
	      ware increasingly verbose.

DIAGNOSTICS
       Problems are reported to the standard error stream and to syslogd(8).

       postsuper(1) reports the number of messages  deleted  with  -d,	the  number  of  messages
       requeued  with -r, and the number of messages whose queue file name was fixed with -s. The
       report is written to the standard error stream and to syslogd(8).

ENVIRONMENT
       MAIL_CONFIG
	      Directory with the main.cf file.

BUGS
       Mail that is not sanitized by Postfix (i.e. mail in the maildrop queue) cannot  be  placed
       "on hold".

CONFIGURATION PARAMETERS
       The  following main.cf parameters are especially relevant to this program.  The text below
       provides only a parameter summary. See postconf(5) for more details including examples.

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

       hash_queue_depth (1)
	      The  number  of  subdirectory  levels  for  queue  directories  listed   with   the
	      hash_queue_names parameter.

       hash_queue_names (deferred, defer)
	      The names of queue directories that are split across multiple subdirectory levels.

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

       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".

SEE ALSO
       sendmail(1), Sendmail-compatible user interface
       postqueue(1), unprivileged queue operations

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

										     POSTSUPER(1)
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