Re: [IMail Forum] imail behind cisco router with firewall

[James Colunio]

Michael,     I'm assuming that your "firewalled" 2620 acts like most firewalls and have rules or access lists (like the PIX).  I don't know about that particular setup, but I can tell you from a PIX point of view.... Your inside users are probably Nat'ed and you are allowing these addresses to access the mail server..... right?? Is the mail server on the inside or outside? If it is outside the switch, then you have to have the access-list applied to an interface somehow......  At least that's the way a PIX works. You just have to think (1) where are the machines that are trying to send to the mail server and (2) where is the mail server.... now how do you apply the port access to the correct IPs to make that work.... I hope I didn't get too complicated for your question. Please let me know if there is anything else I can help you with... thanks.                  Jim   ----- Original Message ----- From: michael To: [EMAIL PROTECTED] Sent: Monday, January 05, 2004 3:53 PM Subject: [IMail Forum] imail behind cisco router with firewall We are running Imail 8.05 behind a cisco 2620 with firewall.  I opened ports 25 and 110.   No users using outlook or outlook express could send e-mail to any outside e-mail address.  Error was 550-  Unable to relay.   It worked ok from web messaging.  There was no problem after removing the firewall, so this is a Cisco configuration issue.   My question is what ports need to be open on the cisco for this to work correctly.     Help   Thanks