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== Using mailx to send outgoing email directly to a smarthost ==

Sometimes you don't have an email system on your RT-server. In this case you can use mailx as a sendmail drop-in to directly connect to a remote mailserver (smarthost) instead of to a local installation.

First obtain mailx (previously called nail) from

http://heirloom.sourceforge.net/mailx.html

Use something like the following to compile and install:

make PREFIX=/opt/mailx SYSCONFDIR=/opt/mailx/etc MANDIR=/opt/mailx/man UCBINSTALL=/usr/bin/install
make install PREFIX=/opt/mailx SYSCONFDIR=/opt/mailx/etc MANDIR=/opt/mailx/man UCBINSTALL=/usr/bin/install

Lay down a wrapper script, for instance in /opt/mailx/bin/mailx-wrapper

<nowiki>#!/bin/bash
# do not query a resource file
export MAILRC=/dev/null
# send email directly to a remote smtp smarthost
export smtp=smtp-smarthost.example.com
# make mailx accept 8-bit content - in this case for German umlauts etc.
export LC_CTYPE=de_DE.iso88591
# send the email (since this is the first real command executed in the script, it will receive the email content from STDIN)
/opt/mailx/bin/mailx -n -t
# log a line to syslog for debugging purposes
/usr/bin/logger -t RTmailer -p syslog.info -- CALL /opt/mailx/bin/mailx -n -t "$@" RETURNED $?
</nowiki>

Set the following options in [[RT Config|RT_Config]].pm

Set($MailCommand , 'sendmailpipe');
Set($SendmailArguments , "");
Set($SendmailPath , "/opt/mailx/bin/mailx_wrapper");

Make sure your smarthost accepts email from the reply- and comment-addresses defined for each queue.

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