POSTQUEUE(1)                                                      POSTQUEUE(1)

       postqueue - Postfix queue control

   To flush the mail queue:

       postqueue [-v] [-c config_dir] -f

       postqueue [-v] [-c config_dir] -i queue_id

       postqueue [-v] [-c config_dir] -s site

   To list the mail queue:

       postqueue [-v] [-c config_dir] -j

       postqueue [-v] [-c config_dir] -p

       The  postqueue(1)  command  implements  the  Postfix user interface for
       queue management.  It  implements  operations  that  are  traditionally
       available  via  the  sendmail(1) command.  See the postsuper(1) command
       for queue operations that require super-user privileges such as  delet-
       ing a message from the queue or changing the status of a message.

       The following options are recognized:

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

       -f     Flush the queue: attempt to deliver all queued mail.

              This option implements the traditional "sendmail -q" command, by
              contacting the Postfix qmgr(8) daemon.

              Warning: flushing undeliverable mail frequently will  result  in
              poor delivery performance of all other mail.

       -i queue_id
              Schedule  immediate delivery of deferred mail with the specified
              queue ID.

              This option implements the traditional sendmail -qI command,  by
              contacting the flush(8) server.

              This feature is available with Postfix version 2.4 and later.

       -j     Produce  a  queue  listing in JSON LINES format, based on output
              from the showq(8) daemon. See "JSON  OBJECT  FORMAT"  below  for

              This feature is available in Postfix 3.1 and later.

       -p     Produce a traditional sendmail-style queue listing.  This option
              implements the traditional  mailq  command,  by  contacting  the
              Postfix showq(8) daemon.

              Each  queue entry shows the queue file ID, message size, arrival
              time, sender, and the recipients that still need  to  be  deliv-
              ered.  If mail could not be delivered upon the last attempt, the
              reason for failure is shown. The queue ID string is followed  by
              an optional status character:

              *      The  message  is in the active queue, i.e. the message is
                     selected for delivery.

              !      The message is in the hold queue, i.e. no further  deliv-
                     ery  attempt  will  be  made  until the mail is taken off

              #      The message is forced to  expire.  See  the  postsuper(1)
                     options -e or -f.

                     This feature is available in Postfix 3.5 and later.

       -s site
              Schedule  immediate  delivery of all mail that is queued for the
              named site. A numerical site must be specified as  a  valid  RFC
              5321  address  literal  enclosed  in  [],  just  like  in  email
              addresses.  The site must be eligible for the "fast flush"  ser-
              vice.   See flush(8) for more information about the "fast flush"

              This option implements the traditional "sendmail  -qRsite"  com-
              mand, by contacting the Postfix flush(8) daemon.

       -v     Enable  verbose  logging  for  debugging  purposes.  Multiple -v
              options make the software increasingly verbose.  As  of  Postfix
              2.3, this option is available for the super-user only.

       Each  JSON  object represents one queue file; it is emitted as a single
       text line followed by a newline character.

       Object members have string values unless indicated otherwise.  Programs
       should ignore object members that are not listed here; the list of mem-
       bers is expected to grow over time.

              The name of the queue where the message was  found.   Note  that
              the  contents  of  the  mail  queue may change while it is being
              listed; some messages may appear more than once, and  some  mes-
              sages may be missed.

              The queue file name. The queue_id may be reused within a Postfix
              instance unless "enable_long_queue_ids = true" and time is mono-
              tonic.   Even  then,  the  queue_id is not expected to be unique
              between different  Postfix  instances.   Management  tools  that
              require  a  unique  name  should  combine  the queue_id with the
              myhostname setting of the Postfix instance.

              The number of seconds since the start of the UNIX epoch.

              The number of bytes in the message header and body. This  number
              does  not  include  message envelope information. It is approxi-
              mately equal to the number of bytes that  would  be  transmitted
              via SMTP including the <CR><LF> line endings.

              The  message is forced to expire (true or false).  See the post-
              super(1) options -e or -f.

              This feature is available in Postfix 3.5 and later.

       sender The envelope sender address.

              An array containing zero or more objects with members:

                     One recipient address.

                     If present, the reason  for  delayed  delivery.   Delayed
                     recipients  may  have no delay reason, for example, while
                     delivery is in progress, or after the system was  stopped
                     before it could record the reason.

       This  program  is designed to run with set-group ID privileges, so that
       it can connect to Postfix daemon processes.

       RFC 7159 (JSON notation)

       Problems are logged to syslogd(8) or postlogd(8), and to  the  standard
       error stream.

              Directory  with the file. In order to avoid exploitation
              of set-group ID privileges, a non-standard directory is  allowed
              only if:

              o      The  name is listed in the standard file with the
                     alternate_config_directories configuration parameter.

              o      The command is invoked by the super-user.

       The following parameters are especially relevant to  this  pro-
       gram.   The  text  below  provides  only a parameter summary. See post-
       conf(5) for more details including examples.

       alternate_config_directories (empty)
              A list of non-default Postfix configuration directories that may
              be  specified with "-c config_directory" on the command line (in
              the case of sendmail(1), with  the  "-C"  option),  or  via  the
              MAIL_CONFIG environment parameter.

       config_directory (see 'postconf -d' output)
              The  default  location of the Postfix and con-
              figuration files.

       command_directory (see 'postconf -d' output)
              The location of all postfix administrative commands.

       fast_flush_domains ($relay_domains)
              Optional list of destinations that are eligible for per-destina-
              tion logfiles with mail that is queued to those destinations.

       import_environment (see 'postconf -d' output)
              The  list  of  environment  variables  that a privileged Postfix
              process will  import  from  a  non-Postfix  parent  process,  or
              name=value environment overrides.

       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)
              A  prefix  that  is  prepended  to  the  process  name in syslog
              records, so that, for example, "smtpd" becomes "prefix/smtpd".

       trigger_timeout (10s)
              The time limit for sending a trigger to a  Postfix  daemon  (for
              example, the pickup(8) or qmgr(8) daemon).

       Available in Postfix version 2.2 and later:

       authorized_flush_users (static:anyone)
              List of users who are authorized to flush the queue.

       authorized_mailq_users (static:anyone)
              List of users who are authorized to view the queue.

       /var/spool/postfix, mail queue

       qmgr(8), queue manager
       showq(8), list mail queue
       flush(8), fast flush service
       sendmail(1), Sendmail-compatible user interface
       postsuper(1), privileged queue operations
       postlogd(8), Postfix logging
       syslogd(8), system logging

       ETRN_README, Postfix ETRN howto

       The Secure Mailer license must be distributed with this software.

       The postqueue command was introduced with Postfix version 1.1.

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

       Wietse Venema
       Google, Inc.
       111 8th Avenue
       New York, NY 10011, USA