Exchange 2003, Router set for UDP or TCP?

Hi all,
Simple question, setting up exchange 2003 on a new router.

Which port do I open up on the router, and do I select TCP or UDP?

I have a hunch its port 25.

Thanks
LVL 3
JasonWinnAsked:
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scampgbCommented:
Hi JasonWinn,
You're right with your hunch :-)

SMTP uses TCP port 25

Does that help?
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JasonWinnAuthor Commented:
Thank you very much scampgb :)
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scampgbCommented:
Glad I could help.  Good luck with it! :-)
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flyguybobCommented:
Don't forget 80 and 443, if it is a Front-End box.
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