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REMINDER: Additional Windows Live Messenger PIC/Federation IP Address

This is the four week reminder that the scheduled additional IP Address is on track for implementation on Friday, March 26, 2010.  For organizations restricting this traffic to specific IP addresses the updated list in the KB below must be in place by March 26, 2010 or PIC connectivity to MSN will fail.

897567    Known issues that occur with public instant messaging and Communications Server
https://support.microsoft.com/default.aspx?scid=kb;EN-US;897567

I will provide an additional reminder one week prior to this work going into production.

Reference:

https://blogs.technet.com/tlyons/archive/2010/02/11/postponed-additional-windows-live-messenger-pic-federation-ip-address.aspx