Exchange Server Port #.

I setup a new firewall and exchange server email can go out, but they can't receive. I think I'm missing a port number..what am I missing i have:

443
80
21
3389
8080
1723
jmahlmannAsked:
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Dav GrayIT ManagerCommented:
SMTP Port 25 is not in your list.
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jmahlmannAuthor Commented:
Just added 25. Still same issue?
0
jmahlmannAuthor Commented:
solved my own problem! I set the port on the server to be trusted rather then open to external.
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jmahlmannAuthor Commented:
I figured it out before anyone answered it.
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