nullmailer-send(8)nullmailer-send(8)NAMEnullmailer-send - Send queued messages
SYNOPSISnullmailer-sendDESCRIPTION
This program is responsible for coordinating the transmission of mes‐
sages that have been queued by nullmailer-queue. It uses a variety of
protocol modules to deliver the messages from the queue to remote
"smart" servers.
When the program starts, the queue is scanned to build a list of mes‐
sages to send. The queue is rescanned when either the trigger is
pulled, or after pausetime seconds have elapsed after the last failed
delivery. When there are no messages in the queue, nullmailer does no
rescanning until the trigger is pulled. Pulling the trigger consists
of opening up the trigger named pipe and writing a single byte to it,
which causes this program to be awakened (if it's not already process‐
ing the queue). This procedure is done by nullmailer-queue to ensure
that messages are delivered immediately. You can start delivery by
hand from the command line like this:
echo 1 > trigger
Delivery of messages consists of reading the list of remote servers and
then trying to deliver the messages to these servers as follows. For
each remote in the list, the named protocol handler is executed once
for each message remaining in the queue. If the protocol handler suc‐
ceeds, the message is removed from the queue and processing continues
with the next message. If it fails, the remote is skipped and process‐
ing of the remaing messages continues with the next remote. When all
the remotes have been tried, nullmailer-send sleeps for a number of
seconds specified by pausetime before retrying sending the contents of
the queue.
CONTROL FILES
All the control files are reread each time the queue is run.
helohost
Sets the environment variable $HELOHOST which is used by the
SMTP protocol module to set the parameter given to the HELO com‐
mand. Defaults to the value of the me configuration file.
maxpause
The maximum number of seconds to pause between successive queue
runs (defaults to 86400).
pausetime
The minimum number of seconds to pause between successive queue
runs when there are messages in the queue (defaults to 60).
Each time this timeout is reached, the timeout is doubled to a
maximum of maxpause. After new messages are injected, the time‐
out is reset. If this is set to 0, nullmailer-send will exit
immediately after going through the queue once (one-shot mode).
remotes
This file contains a list of remote servers to which to send
each message. Each line of this file contains a remote host
name or address followed by an optional protocol string, sepa‐
rated by white space. The protocol name defaults to smtp, and
may be followed by command-line arguments for that module. For
example, to connect to port 2525 on your SMTP smart host, which
also requires SMTP authentication, use:
smarthost.dom smtp --port=2525 --user=user --pass=pass
If your smarthost requires LOGIN authentication instead of the
default PLAIN method, use:
smarthost.dom smtp --port=2525 --auth-login --user=user --pass=pass
Blank lines and lines starting with a pound are ignored. When
called with the --help option, each protocol module will list
its available command-line arguments:
/usr/local/libexec/nullmailer/smtp --help
sendtimeout
The number of seconds to wait for a remote module listed above
to complete sending a message before killing it and trying again
(defaults to 3600). If this is set to 0, nullmailer-send will
wait forever for messages to complete sending.
FILES
/var/nullmailer/queue
The message queue.
/var/nullmailer/trigger
A trigger file to cause immediate delivery.
/usr/local/etc/nullmailer
The configuration directory.
/usr/local/libexec/nullmailer
The protocol program directory.
SEE ALSOnullmailer-queue(8), nullmailer-inject(1), mailq(1),
/usr/local/libexec/nullmailer/smtp --help, /usr/local/libexec/null‐
mailer/qmqp --help
nullmailer-send(8)
