Provided by: opensmtpd_6.8.0p2-4build2_amd64 bug


     smtpctl, mailq — control the Simple Mail Transfer Protocol daemon


     smtpctl command [argument ...]


     The smtpctl program controls smtpd(8).  Commands may be abbreviated to the minimum
     unambiguous prefix; for example, sh ro for show routes.

     The mailq command is provided for compatibility with other MTAs and is simply a shortcut for
     show queue.

     The following commands are available:

     discover envelope-id | message-id
             Schedule a single envelope, or all envelopes with the same message ID that were
             manually moved to the queue.

     encrypt [string]
             Encrypt the password string to a representation suitable for user credentials and
             print it to the standard output.  If string is not provided, cleartext passwords are
             read from standard input.

             It is advised to avoid providing the password as a parameter as it will be visible
             from top(1) and ps(1) output.

     log brief
             Disable verbose debug logging.

     log verbose
             Enable verbose debug logging.

             Display updates of some smtpd(8) internal counters in one second intervals.  Each
             line reports the increment of all counters since the last update, except for some
             counters which are always absolute values.  The first line reports the current value
             of each counter.  The fields are:

                Current number of active SMTP clients (absolute value).
                New SMTP clients.
                Disconnected clients.
                Current number of envelopes in the queue (absolute value).
                Newly enqueued envelopes.
                Dequeued envelopes.
                Successful deliveries.
                Temporary failures.
                Permanent failures.
                Message loops.
                Expired envelopes.
                Envelopes removed by the administrator.
                Generated bounces.

     pause envelope envelope-id | message-id | all
             Temporarily suspend scheduling for the envelope with the given ID, envelopes with
             the given message ID, or all envelopes.

     pause mda
             Temporarily stop deliveries to local users.

     pause mta
             Temporarily stop relaying and deliveries to remote users.

     pause smtp
             Temporarily stop accepting incoming sessions.

     profile subsystem
             Enables real-time profiling of subsystem.  Supported subsystems are:

                queue, to profile cost of queue IO
                imsg, to profile cost of event handlers

     remove envelope-id | message-id | all
             Remove a single envelope, envelopes with the given message ID, or all envelopes.

     resume envelope envelope-id | message-id | all
             Resume scheduling for the envelope with the given ID, envelopes with the given
             message ID, or all envelopes.

     resume mda
             Resume deliveries to local users.

     resume mta
             Resume relaying and deliveries to remote users.

     resume route route-id
             Resume routing on disabled route route-id.

     resume smtp
             Resume accepting incoming sessions.

     schedule envelope-id | message-id | all
             Mark as ready for immediate delivery a single envelope, envelopes with the given
             message ID, or all envelopes.

     show envelope envelope-id
             Display envelope content for the given ID.

     show hosts
             Display the list of known remote MX hosts.  For each of them, it shows the IP
             address, the canonical hostname, a reference count, the number of active connections
             to this host, and the elapsed time since the last connection.

     show hoststats
             Display status of last delivery for domains that have been active in the last 4
             hours.  It consists of the following fields, separated by a "|":

                UNIX timestamp of last delivery.
                Status of last delivery.

     show message envelope-id
             Display message content for the given ID.

     show queue
             Display information concerning envelopes that are currently in the queue.  Each line
             of output describes a single envelope.  It consists of the following fields,
             separated by a "|":

                Envelope ID.
                Address family of the client which enqueued the mail.
                Type of delivery: one of "mta", "mda" or "bounce".
                Various flags on the envelope.
                Sender address (return path).
                The original recipient address.
                The destination address.
                Time of creation.
                Time of expiration.
                Time of last delivery or relaying attempt.
                Number of delivery or relaying attempts.
                Current runstate: either "pending" or "inflight" if smtpd(8) is running, or
                 "offline" otherwise.
                Delay in seconds before the next attempt if pending, or time elapsed if
                 currently running.  This field is blank if smtpd(8) is not running.
                Error string for the last failed delivery or relay attempt.

     show relays
             Display the list of currently active relays and associated connectors.  For each
             relay, it shows a number of counters and information on its internal state on a
             single line.  Then comes the list of connectors (source addresses to connect from
             for this relay).

     show routes
             Display status of routes currently known by smtpd(8).  Each line consists of a route
             number, a source address, a destination address, a set of flags, the number of
             connections on this route, the current penalty level which determines the amount of
             time the route is disabled if an error occurs, and the delay before it gets
             reactivated.  The following flags are defined:

             D   The route is currently disabled.
             N   The route is new.  No SMTP session has been established yet.
             Q   The route has a timeout registered to lower its penalty level and possibly
                 reactivate or discard it.

     show stats
             Displays runtime statistics concerning smtpd(8).

     show status
             Shows if MTA, MDA and SMTP systems are currently running or paused.

     spf walk
             Recursively look up SPF records for the domains read from stdin.  For example:

                   $ smtpctl spf walk < domains.txt

             SPF records may contain macros which cannot be included in a static list and must be
             resolved dynamically at connection time.  spf walk cannot provide full results in
             these cases.

     trace subsystem
             Enables real-time tracing of subsystem.  Supported subsystems are:

                smtp (incoming sessions)
                mta (outgoing sessions)
                expand (aliases/virtual/forward expansion)
                lookup (user/credentials lookups)
                rules (matched by incoming sessions)

     unprofile subsystem
             Disables real-time profiling of subsystem.

     untrace subsystem
             Disables real-time tracing of subsystem.

     update table name
             Updates the contents of table name, for tables using the “file” backend.

     When smtpd receives a message, it generates a message-id for the message, and one
     envelope-id per recipient.  The message-id is a 32-bit random identifier that is guaranteed
     to be unique on the host system.  The envelope-id is a 64-bit unique identifier that encodes
     the message-id in the 32 upper bits and a random envelope identifier in the 32 lower bits.

     A command which specifies a message-id applies to all recipients of a message; a command
     which specifies an envelope-id applies to a specific recipient of a message.


     /var/run/smtpd.sock     UNIX-domain socket used for communication with smtpd(8).




     The smtpctl program first appeared in OpenBSD 4.6.