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.  The output
13       is meant to be formatted by the postqueue(1) command,  as  it  emulates
14       the Sendmail `mailq' command.
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16       The  showq(8)  daemon  can also be run in stand-alone mode by the supe‐
17       ruser. This mode of operation is used to emulate  the  `mailq'  command
18       while the Postfix mail system is down.
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SECURITY

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

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

30       Problems and transactions are logged to syslogd(8) or postlogd(8).
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CONFIGURATION PARAMETERS

33       Changes to main.cf are picked up automatically  as  showq(8)  processes
34       run for only a limited amount of time. Use the command "postfix reload"
35       to speed up a change.
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37       The text below provides only a parameter summary. See  postconf(5)  for
38       more details including examples.
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40       config_directory (see 'postconf -d' output)
41              The  default  location of the Postfix main.cf and master.cf con‐
42              figuration files.
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44       daemon_timeout (18000s)
45              How much time a Postfix daemon process  may  take  to  handle  a
46              request before it is terminated by a built-in watchdog timer.
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48       duplicate_filter_limit (1000)
49              The maximal number of addresses remembered by the address dupli‐
50              cate filter for aliases(5) or virtual(5) alias expansion, or for
51              showq(8) queue displays.
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53       empty_address_recipient (MAILER-DAEMON)
54              The recipient of mail addressed to the null address.
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56       ipc_timeout (3600s)
57              The  time  limit  for  sending  or receiving information over an
58              internal communication channel.
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60       max_idle (100s)
61              The maximum amount of time that an idle Postfix  daemon  process
62              waits for an incoming connection before terminating voluntarily.
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64       max_use (100)
65              The maximal number of incoming connections that a Postfix daemon
66              process will service before terminating voluntarily.
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68       process_id (read-only)
69              The process ID of a Postfix command or daemon process.
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71       process_name (read-only)
72              The process name of a Postfix command or daemon process.
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74       queue_directory (see 'postconf -d' output)
75              The location of the Postfix top-level queue directory.
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77       syslog_facility (mail)
78              The syslog facility of Postfix logging.
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80       syslog_name (see 'postconf -d' output)
81              A prefix that  is  prepended  to  the  process  name  in  syslog
82              records, so that, for example, "smtpd" becomes "prefix/smtpd".
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84       Available in Postfix version 2.9 and later:
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86       enable_long_queue_ids (no)
87              Enable long, non-repeating, queue IDs (queue file names).
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89       Available in Postfix 3.3 and later:
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91       service_name (read-only)
92              The master.cf service name of a Postfix daemon process.
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FILES

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

98       pickup(8), local mail pickup service
99       cleanup(8), canonicalize and enqueue mail
100       qmgr(8), queue manager
101       postconf(5), configuration parameters
102       master(8), process manager
103       postlogd(8), Postfix logging
104       syslogd(8), system logging
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LICENSE

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

110       Wietse Venema
111       IBM T.J. Watson Research
112       P.O. Box 704
113       Yorktown Heights, NY 10598, USA
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115       Wietse Venema
116       Google, Inc.
117       111 8th Avenue
118       New York, NY 10011, USA
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