11.7 Configuring Postfix
The main configuration settings for Postfix are
located in
the /etc/postfix/main.cf. This file contains many configuration options
many of
which are beyond the scope of the introductory book. There are many
resources
on the internet that provide detailed information on Postfix so this
section will
focus on the basic options required to get email up and running.
The key options in the main.cf file are:
myhostname = mta1.domain.com
mydomain = domain.com
myorigin = $myhostname
inet_interfaces = $myhostname
Other settings will have either been
set up for you by the
installation process or are not needed unless you are feeling
adventurous and
want to configure a more sophisticated email system.
The format of myhostname is host.domain.extension.
For
example if your Linux system is called MyLinuxHost and you internet
domain is
MyDomain.com you would set the myhostname option as:
myhostname = mylinuxhost.mydomain.com
The mydomain setting is just the domain part of
the above
setting. For example:
mydomain = mydomain.com
The myorigin and inet_interfaces options use the
settings we
have just created so do not need to be changed (although the
inet_interfaces
may be commented out by default so you should remove the “#” at the
beginning
of this particular line in the main.cf file).
