1SHOWQ(8)                    System Manager's Manual                   SHOWQ(8)
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NAME

6       showq - list the Postfix mail queue
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SYNOPSIS

9       showq [generic Postfix daemon options]
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DESCRIPTION

12       The  showq(8)  daemon reports the Postfix mail queue status.  It is the
13       program that emulates the sendmail `mailq' command.
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15       The showq(8) daemon can also be run in stand-alone mode  by  the  supe‐
16       ruser.  This  mode  of operation is used to emulate the `mailq' command
17       while the Postfix mail system is down.
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SECURITY

20       The showq(8) daemon can run in a chroot jail at  fixed  low  privilege,
21       and  takes  no input from the client. Its service port is accessible to
22       local untrusted users, so the service can be susceptible to  denial  of
23       service attacks.
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STANDARDS

26       None. The showq(8) daemon does not interact with the outside world.
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DIAGNOSTICS

29       Problems and transactions are logged to syslogd(8).
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CONFIGURATION PARAMETERS

32       Changes  to  main.cf  are picked up automatically as showq(8) processes
33       run for only a limited amount of time. Use the command "postfix reload"
34       to speed up a change.
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36       The  text  below provides only a parameter summary. See postconf(5) for
37       more details including examples.
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39       config_directory (see 'postconf -d' output)
40              The default location of the Postfix main.cf and  master.cf  con‐
41              figuration files.
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43       daemon_timeout (18000s)
44              How  much  time  a  Postfix  daemon process may take to handle a
45              request before it is terminated by a built-in watchdog timer.
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47       duplicate_filter_limit (1000)
48              The maximal number of addresses remembered by the address dupli‐
49              cate filter for aliases(5) or virtual(5) alias expansion, or for
50              showq(8) queue displays.
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52       empty_address_recipient (MAILER-DAEMON)
53              The recipient of mail addressed to the null address.
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55       ipc_timeout (3600s)
56              The time limit for sending  or  receiving  information  over  an
57              internal communication channel.
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59       max_idle (100s)
60              The  maximum  amount of time that an idle Postfix daemon process
61              waits for an incoming connection before terminating voluntarily.
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63       max_use (100)
64              The maximal number of incoming connections that a Postfix daemon
65              process will service before terminating voluntarily.
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67       process_id (read-only)
68              The process ID of a Postfix command or daemon process.
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70       process_name (read-only)
71              The process name of a Postfix command or daemon process.
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73       queue_directory (see 'postconf -d' output)
74              The location of the Postfix top-level queue directory.
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76       syslog_facility (mail)
77              The syslog facility of Postfix logging.
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79       syslog_name (see 'postconf -d' output)
80              The  mail  system  name that is prepended to the process name in
81              syslog records, so that "smtpd"  becomes,  for  example,  "post‐
82              fix/smtpd".
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FILES

85       /var/spool/postfix, queue directories
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SEE ALSO

88       pickup(8), local mail pickup service
89       cleanup(8), canonicalize and enqueue mail
90       qmgr(8), queue manager
91       postconf(5), configuration parameters
92       master(8), process manager
93       syslogd(8), system logging
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LICENSE

96       The Secure Mailer license must be distributed with this software.
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AUTHOR(S)

99       Wietse Venema
100       IBM T.J. Watson Research
101       P.O. Box 704
102       Yorktown Heights, NY 10598, USA
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