[CentOS] Not receiving mail

Sun Oct 17 22:39:08 UTC 2010
Dotan Cohen <dotancohen at gmail.com>

I have installed Postfix, Dovecot, and Squirrelmail on a CentOS 5.5
machine. In Squirrelmail a user can send mail, but he is not receiving
replies. There is nothing relevant in the maillog other than the
user's (successful) login attempts. I am at  loss, I have been
following tutorials such as the Perfect Server [1] series and other
Google results, but I cannot get this thing to receive mail. What
should I be checking?


[1] http://www.howtoforge.com/perfect-server-centos-5.5-x86_64-ispconfig-2

Dotan Cohen