.\" $OpenBSD: smtpctl.8,v 1.63 2018/05/14 15:23:05 gilles Exp $ .\" .\" Copyright (c) 2006 Pierre-Yves Ritschard .\" Copyright (c) 2012 Gilles Chehade .\" .\" Permission to use, copy, modify, and distribute this software for any .\" purpose with or without fee is hereby granted, provided that the above .\" copyright notice and this permission notice appear in all copies. .\" .\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES .\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF .\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR .\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES .\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. .\" .Dd $Mdocdate: May 14 2018 $ .Dt SMTPCTL 8 .Os .Sh NAME .Nm smtpctl , .Nm mailq .Nd control the Simple Mail Transfer Protocol daemon .Sh SYNOPSIS .Nm .Ar command .Op Ar argument ... .Nm mailq .Sh DESCRIPTION The .Nm program controls .Xr smtpd 8 . Commands may be abbreviated to the minimum unambiguous prefix; for example, .Cm sh ro for .Cm show routes . .Pp The .Nm mailq command is provided for compatibility with other MTAs and is simply a shortcut for .Cm show queue . .Pp The following commands are available: .Bl -tag -width Ds .It Cm discover Ar envelope-id | message-id Schedule a single envelope, or all envelopes with the same message ID that were manually moved to the queue. .It Cm encrypt Op Ar string Encrypt the password .Ar string to a representation suitable for user credentials and print it to the standard output. If .Ar string is not provided, cleartext passwords are read from standard input. .Pp It is advised to avoid providing the password as a parameter as it will be visible from .Xr top 1 and .Xr ps 1 output. .It Cm log brief Disable verbose debug logging. .It Cm log verbose Enable verbose debug logging. .It Cm monitor Display updates of some .Xr 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: .Pp .Bl -bullet -compact .It Current number of active SMTP clients (absolute value). .It New SMTP clients. .It Disconnected clients. .It Current number of envelopes in the queue (absolute value). .It Newly enqueued envelopes. .It Dequeued envelopes. .It Successful deliveries. .It Temporary failures. .It Permanent failures. .It Message loops. .It Expired envelopes. .It Envelopes removed by the administrator. .It Generated bounces. .El .It Cm pause envelope Ar envelope-id | message-id | Cm all Temporarily suspend scheduling for the envelope with the given ID, envelopes with the given message ID, or all envelopes. .It Cm pause mda Temporarily stop deliveries to local users. .It Cm pause mta Temporarily stop relaying and deliveries to remote users. .It Cm pause smtp Temporarily stop accepting incoming sessions. .It Cm profile Ar subsystem Enables real-time profiling of .Ar subsystem . Supported subsystems are: .Pp .Bl -bullet -compact .It queue, to profile cost of queue IO .It imsg, to profile cost of event handlers .El .It Cm remove Ar envelope-id | message-id | Cm all Remove a single envelope, envelopes with the given message ID, or all envelopes. .It Cm resume envelope Ar envelope-id | message-id | Cm all Resume scheduling for the envelope with the given ID, envelopes with the given message ID, or all envelopes. .It Cm resume mda Resume deliveries to local users. .It Cm resume mta Resume relaying and deliveries to remote users. .It Cm resume route Ar route-id Resume routing on disabled route .Ar route-id . .It Cm resume smtp Resume accepting incoming sessions. .It Cm schedule Ar envelope-id | message-id | Cm all Mark as ready for immediate delivery a single envelope, envelopes with the given message ID, or all envelopes. .It Cm show envelope Ar envelope-id Display envelope content for the given ID. .It Cm 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. .It Cm 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 "|": .Pp .Bl -bullet -compact .It Domain. .It .Ux timestamp of last delivery. .It Status of last delivery. .El .It Cm show message Ar envelope-id Display message content for the given ID. .It Cm 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 "|": .Pp .Bl -bullet -compact .It Envelope ID. .It Address family of the client which enqueued the mail. .It Type of delivery: one of "mta", "mda" or "bounce". .It Various flags on the envelope. .It Sender address (return path). .It The original recipient address. .It The destination address. .It Time of creation. .It Time of expiration. .It Time of last delivery or relaying attempt. .It Number of delivery or relaying attempts. .It Current runstate: either "pending" or "inflight" if .Xr smtpd 8 is running, or "offline" otherwise. .It Delay in seconds before the next attempt if pending, or time ellapsed if currently running. This field is blank if .Xr smtpd 8 is not running. .It Error string for the last failed delivery or relay attempt. .El .It Cm 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). .It Cm show routes Display status of routes currently known by .Xr 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: .Pp .Bl -tag -width xx -compact .It D The route is currently disabled. .It N The route is new. No SMTP session has been established yet. .It Q The route has a timeout registered to lower its penalty level and possibly reactivate or discard it. .El .It Cm show stats Displays runtime statistics concerning .Xr smtpd 8 . .It Cm show status Shows if MTA, MDA and SMTP systems are currently running or paused. .It Cm spf walk Recursively look up SPF records for the domains read from stdin. For example: .Bd -literal -offset indent # smtpctl spf walk < domains.txt .Ed .It Cm trace Ar subsystem Enables real-time tracing of .Ar subsystem . Supported subsystems are: .Pp .Bl -bullet -compact .It imsg .It io .It smtp (incoming sessions) .It filters .It mta (outgoing sessions) .It bounce .It scheduler .It expand (aliases/virtual/forward expansion) .It lookup (user/credentials lookups) .It stat .It rules (matched by incoming sessions) .It mproc .It all .El .It Cm unprofile Ar subsystem Disables real-time profiling of .Ar subsystem . .It Cm untrace Ar subsystem Disables real-time tracing of .Ar subsystem . .It Cm update table Ar name Updates the contents of table .Ar name , for tables using the .Dq file backend. .El .Pp When .Nm smtpd receives a message, it generates a .Ar message-id for the message, and one .Ar envelope-id per recipient. The .Ar message-id is a 32-bit random identifier that is guaranteed to be unique on the host system. The .Ar envelope-id is a 64-bit unique identifier that encodes the .Ar message-id in the 32 upper bits and a random envelope identifier in the 32 lower bits. .Pp A command which specifies a .Ar message-id applies to all recipients of a message; a command which specifies an .Ar envelope-id applies to a specific recipient of a message. .Sh FILES .Bl -tag -width "/var/run/smtpd.sockXXX" -compact .It Pa /var/run/smtpd.sock .Ux Ns -domain socket used for communication with .Xr smtpd 8 . .El .Sh SEE ALSO .Xr smtpd 8 .Sh HISTORY The .Nm program first appeared in .Ox 4.6 .