1 Default MTA

The default MTA in RHEL is Sendmail, however both Postfix and Exim are supported in the Mail Transport Agent Switcher

2 Installing Exim

Exim can be installed from RPM, or by using the Up2date facility.

up2date exim* <enter>

3 Setting Exim as the default MTA

NOTE: You will need to login as root to perform the following tasks.

To make Exim the default MTA select the following:

- Administration > Preferences > More Preferences > Mail Transport Agent Switcher.

- Choose Exim > Click OK

To make the Exim Monitor program launch at startup select the following:

- Administration > Preferences > More Preferences > Sessions > Startup Programs

Click Add > Type eximon > Click OK > Click Close

Location of Exim Binaries

/usr/sbin & /usr/bin

Name of Config File

exim.conf

Usual Location of Config Directory

/etc/exim

Usual Permissions required on Exim Binaries

owner:root, group:root, permissions:755

Usual Permissions required on Config Files

owner:exim, group:exim, permissions:644

Usual Spool Directory

/var/spool/exim

Usual Queue Directory

/var/spool/exim/input

Usual Logfile Directory

/var/log/exim

4 Starting and stopping Exim

Starting Exim

service exim start <enter>

Stopping Exim

service exim stop <enter>

Restarting Exim

service exim restart <enter>

Default queue settings

/etc/sysconfig/exim or

/etc/sysconfig/sendmail