Can't access IMAP outside of local network

Hi all,
Let me start by saying I'm a novice, so I apologize in advance if this message is missing any important details.
I am running OSX Server 10.4, which I use as my mail server. From within my local network (192.168.0.X) all of my mail services work as expected: POP, SMTP, IMAP, SquirrelMail etc.
However, if I try to access my mail from an external network, I can't connect with IMAP. But the weird thing is that everything else still works: POP, SMTP, SquirrelMail etc, so I'm just wondering if there is some particular setting somewhere that stops IMAP from accepting outside connections?
If you need more info about my config, please just ask.
Thanks,
Bruce

Hi
Sounds like you haven't opened up the relevant port on your firewall? If you gave us your domain name we could test it for you. For a list of appropriate ports look here:
http://support.apple.com/kb/ts1629
Tony

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