how to allow Outlook through iptables

Hello,,

I have my system installed with firwall and squid. I could not get the mails to my outlook mail box

I have two lan cards in my linux box
1 — eth1 is connected to the outside wrold with static ip
2.— eth0 is connected to the internal lan.

I am using Linux 5 Enterprise version with its inbuilt squid and firewalls

Can any one help me to solve the problem

Thank you

Sreemon
(sreemon@gmail.com)