25: Connection Refused

[ejsolutions]

An update to thread http://forum.centos-webpanel.com/index.php?topic=8489 , seeing as it has been locked. 

My previous quote:

Alternatively, if your installation has the official Configserver Firewall GUI.. 
Go to Firewall Configuration..
SMTP_ALLOWGROUP = mail,exim,postfix,dovecot
(not all will be required)

It is sufficient to just have..

SMTP_ALLOWGROUP = mail,postfix

.. assuming you don't use mailman (you shouldn't!) and you're looking to allow CWP server messages to be sent.