I ahve a problem with the mail server. Until I update the entire system was working normally. I forgot to exclude postfix from centos update so this is where my problems starts. I removed postfix and install it from CentOS Plus repository (with mysql support). postconf -n Here is the master.cf Also in the maillog I have: /etc/init.d/amavisd restart but in the error log I still get connection refused. Can someone please provide some help here ?