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Ports for Exchange 5.5

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by hawksberry

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What ports need to be on a firewall to connect to microsoft exchange?

2 replies

by mike mullins

From a client you have the following depending upon what info you're retrieving:

Client/Server Comm TCP 135
Exchange Administrator TCP 135
IMAP TCP 143
IMAP (SSL) TCP 993
LDAP TCP 389
LDAP (SSL) TCP 636
MTA ? X.400 over TCP/IP TCP 102
POP3 TCP 110
POP3 (SSL) TCP 995
RPC TCP 135
SMTP TCP 25
NNTP TCP 119
NNTP (SSL) TCP 563

You might want to see the MS article on setting client exchange and outlook client through a firewall
http://support.microsoft.com/default.aspx?scid=kb;EN-US;155831
or
TCP ports and MS exchange
http://support.microsoft.com/default.aspx?scid=kb;EN-US;176466
Good Luck,
Mike

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