ZMAILER(1zm) ZMAILER(1zm)
NAME
zmailer - zmailer control script
SYNOPSIS
zmailer [--zconfig /mail/zmailer-x.conf] [[-q] [kill|nuke|stop] [start]
[router] [scheduler] [smtpserver] [newdb] [newaliases] [resub-
mit] [bootclean] [cleanup] [logsync] [freeze] [thaw|unfreeze]]
DESCRIPTION
The zmailer(1zm) is the quick interface to starting and stopping the
local mail daemons, and doing other administrative chores.
There are three daemons, called the router(8zm), the scheduler(8zm),
and the smtpserver(8zm).
The router(8zm)'s home directory is POSTOFFICE/router, which it scans
every 15 idle seconds for newly submitted message files. The
router(8zm) determines what to do with a message. It will typically
send it on to the scheduler(8zm) queue. This is maintained in the
POSTOFFICE/scheduler directory, which is also the working directory of
the scheduler(8zm) and its transport agents. The scheduler(8zm) pro-
cess is what listens to the mailq TCP port for queries from the
mailq(1zm) program used to examine the state of the transport queues.
OPTIONS
Invoking zmailer(1zm) without any argument is equivalent to giving the
three arguments:
router scheduler smtpserver
Invoking zmailer(1zm) with only one argument, "kill", is equivalent to
invoking it with the four arguments:
kill router scheduler smtpserver
The arguments specify actions to take in sequence:
--zconfig /path/to/zconfig
accepted only as the first parameter, and can be used to over-
ride the hardcoded system-wide value of ZCONFIG ZENV variable.
This value will also be propagated to all daemons started by
this script.
-q shuts up this script wrapper from muttering anything.
freeze sets a flag so that latter options/executions of the zmailer
script need at first an unfreeze to allow restart of various
subprograms. The goal is to keep automatically restarting sys-
tems from starting up a mailer when there is a maintance going
on.
unfreeze
clears the flag that freeze did set. Has an alias: thaw.
kill sets a flag so that when the following arguments are executed,
the relevant process will be shut down gracefully, as opposed to
restarted. If kill is the last (or only) argument, it will ter-
minate all three daemons.
nuke is like kill except the processes are shut down with the KILL
signal.
start clears the nuke/kill flag, and all daemons explicitely named
after this (or if this the last in the command line, then all)
will be started.
router will start up (or shut down if after a kill) a new router dae-
mon.
scheduler
will start up (or shut down if after a kill) a new scheduler
daemon.
smtpserver
will start up (or shut down if after a kill) a new SMTP server
daemon.
newdb will run database regeneration per definitions at "MAIL-
SHARE/db/dbases.conf" file. See zdbases.conf(5zm).
newaliases
will run the script to recreate the alias database from the
"MAILSHARE/db/aliases" file. (This is old invokation method,
and is superceded with "newdb")
resubmit
moves messages from the POSTOFFICE/deferred directory to the
POSTOFFICE/router directory. This should be run regularly by
cron.
bootclean
does any necessary boot-time cleanup.
cleanup
gets rid of old files from the POSTOFFICE/postman and POSTOF-
FICE/public directories. This should be run once a day or week
or month.
logsync
A "post-logfile-movement" call hook to do things needed in vari-
ous subsystems to get their logfiles reopened, or some such.
Most subsystems have automated "reopen everything within 30 sec-
onds of previous reopen" logic inside them. Some may have other
requirements.
EXAMPLES
To stop the currently running daemons:
zmailer kill
At boot time, typically the following script fragment will be run to
start up all the daemons:
if [ -f $MAILSHARE/zmailer ]; then
$MAILSHARE/zmailer -q &
(echo -n ' zmailer') >/dev/console
fi
FILES
/opt/mail/zmailer.conf
ZCONFIG file
/var/spool/postoffice
$POSTOFFICE
/opt/mail/bin/router
$MAILBIN/router
/opt/mail/bin/scheduler
$MAILBIN/scheduler
/opt/mail/bin/smtpserver
$MAILBIN/smtpserver
SEE ALSO
router(8zm), scheduler(8zm), smtpserver(8zm), mailq(1zm), newdb(8zm),
zdbases.conf(5zm), zmailer.conf(5zm).
AUTHOR
This program authored and copyright by:
Rayan Zachariassen <no address>
Modifications over the years 1990-2003 by:
Matti Aarnio <mea@nic.funet.fi>
2003-Aug-28 ZMAILER(1zm)