Postfix manual - postsuper(1)

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 operations 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 [email protected]: mailq | tail +2 | awk 'BEGIN { RS = "" } # $7=sender, $8=recipient1, $9=recipient2 { if ($8 == "[email protected]" && $9 == "") print $1 } ' | tr -d '*!' | postsuper -d - Specify -d ALL to remove all messages; for example, specify -d ALL deferred to delete 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 mes- sage 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 message 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 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 maxi- mal_queue_lifetime or bounce_queue_lifetime set- ting. It becomes subject to expiration after it is released from "hold". -H queue_id Release mail that was put "on hold". Move one mes- sage 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: use "postsuper -r" to release mail that was kept on hold for a significant fraction of $maxi- mal_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. -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 mes- sages, specify multiple -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 daemon to a new file whose name is guaranteed to match the new queue file inode number. The new queue file is sub- jected again to mail address rewriting and substi- tution. This is useful when rewriting rules or vir- tual mappings 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. -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 sub- directories that are no longer needed. File position rearrangements are necessary after a change in the hash_queue_names and/or hash_queue_depth configuration parameters. -v Enable verbose logging for debugging purposes. Mul- tiple -v options make the software 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 num- ber 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 exam- ples. 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 direc- tories 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 direc- tory. syslog_facility (mail) The syslog facility of Postfix logging. syslog_name (postfix) 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)