Provided by: postfix_3.3.0-1ubuntu2_amd64 bug

NAME

       postqueue - Postfix queue control

SYNOPSIS

   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

DESCRIPTION

       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
       deleting a message from the queue or changing the status of a message.

       The following options are recognized:

       -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.

       -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 format, based on output from the  showq(8)  daemon.
              The  result  is  a  stream  of zero or more JSON objects, one per queue file.  Each
              object is followed by a newline character to support simple streaming parsers.  See
              "JSON OBJECT FORMAT" below for details.

              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 delivered.  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 delivery attempt  will  be
                     made until the mail is taken off hold.

       -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"
              service.  See flush(8) for more information about the "fast flush" service.

              This option implements the traditional "sendmail -qRsite"  command,  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.

JSON OBJECT FORMAT

       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 members is expected to grow over
       time.

       queue_name
              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 messages may be missed.

       queue_id
              The queue file name. The queue_id may be reused within a  Postfix  instance  unless
              "enable_long_queue_ids  =  true" and time is monotonic.  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.

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

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

       sender The envelope sender address.

       recipients
              An array containing zero or more objects with members:

              address
                     One recipient address.

              delay_reason
                     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.

SECURITY

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

STANDARDS

       RFC 7159 (JSON notation)

DIAGNOSTICS

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

ENVIRONMENT

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

              ·      The   name   is   listed   in   the   standard   main.cf   file   with   the
                     alternate_config_directories configuration parameter.

              ·      The command is invoked by the super-user.

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.

       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 main.cf and master.cf configuration 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-destination  logfiles  with
              mail that is queued to those destinations.

       import_environment (see 'postconf -d' output)
              The  list  of  environment parameters 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.

FILES

       /var/spool/postfix, mail queue

SEE ALSO

       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

README FILES

       Use "postconf readme_directory" or "postconf html_directory" to locate this information.
       ETRN_README, Postfix ETRN howto

LICENSE

       The Secure Mailer license must be distributed with this software.

HISTORY

       The postqueue command was introduced with Postfix version 1.1.

AUTHOR(S)

       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

                                                                                     POSTQUEUE(1)