Firewall Configuration for Instant Messaging

  • From: aarone@xxxxxxxxxxxxxxxx
  • To: exchangelist@xxxxxxxxxxxxx
  • Date: Tue, 25 Feb 2003 16:26:29 -0700

We have clients outside our firewall that need to connect to our Exchange
Server for Instant Messaging and as their homed server.  What ports do I
need to open in the firewall for a flawless communication with their
Exchange Instant Messaging clients to the server?  Thank you.

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