Installation guide

156 Chapter 16. Mail Transport Agent (MTA) Configuration
If you selected Postfix, you must make sure the sendmail service is stopped and the postfix
service is started:
/sbin/service sendmail stop
/sbin/service postfix start
If you selected Sendmail, you must make sure the postfix service is stopped and the send-
mail service is started:
/sbin/service postfix stop
/sbin/service sendmail start
Tip
For more information about email protocols and MTAs, refer to the Official Red Hat Linux Reference
Guide.