Find the file submit.mc file in directory /usr/lib/mail/cf and create a copy of this file.
In the example in this section, a copy called sunone-submit.mc is created.
Change the following line in the file sunone-submit.mc:
where rhino.west.sesta.com is the localhost name.
rhino.west.sesta.com is the localhost name and west.sesta.com is the default email domain as described in 1.3 Creating the Initial Messaging Server Runtime Configuration. In an HA environment, use the logical host name. See Chapter 3, Configuring High Availability for more information about logical hostnames for High Availability.
Compile the sunone-submit.mc file:
The sunone-submit.mc will output sunone-submit.cf.
Make a backup copy of the existing submit.cf file in the /etc/mail directory.