The configuration files for Postfix were installed in /etc/postfix. The /etc/postfix directory should now contain a very basic set of configuration files. Here's what it looks like immediately after install:
[root@ntbox postfix]# ls install.cf main.cf master.cf postfix-script |
The primary configuration file for Postfix (the working equivalent to /etc/sendmail.cf) is main.cf. The install.cf file contains the initial settings for Postfix which were set up during the RPM installation. The file master.cf is Postfix' master process configuration file. Each line in the master file describes how a mailer component program should be run. The postfix-script is a wrapper used by Postfix to execute Postfix commands safely for the Linux environment.
The file you will need to configure is /etc/postfix/main.cf. A thorough discussion of what should be in this file is included in the Red Hat Postfix HOWTO.