Well my new firewall hasn't come in so I'm still stuck with this Cisco Pix 506E firewall.
I am having POP3 problems and the support staff is telling me it's my firewall.
I'm hosting POP3, if I TURN OFF SMTP Authentication on my mail server, my clients can Send/Recieve email no problem.
If I TURN ON SMTP Authentiation on my mail server, my clients can recieve mail but CAN NOT send mail.
YES, the email clients are configured with user/pass for server SMTP Authentication. I've tested myself.
Support staff says it's something to do with my firewall because I gave them access to the mail server and a test account.
So what do I need to open up besides 110?