[cisco-voip] Adding 2nd Exchange Server - Problem with Unity

[Jeff Brittain]

We've had our existing environment working with a single Exchange 2000 Server since our initial implementation about 2.5 years ago.  We have a new project that is moving us to a new Exchange system with 2 servers running in a Microsoft cluster (still Win2K, Exch2K), with the Information Store being maintained on a HP MSA500 storage system.  To make our transition as simple as possible, we added the new cluster to our current Exchange domain.  We moved our I.T. folks to the new server and mail works fine (after a couple routing tweaks).  When we left a test message for me, the MWI never lit and the message never showed up in my mailbox.  I could call into Unity, but got a message saying the Exchange server was unavailable.  The messages were there and I could still listen to them, but I could not do anything with them (I guess due to the Exchange connection issue).  We are running Unified Messaging, Unity 3.1 and CallManager 3.2.

Is there something in Unity that needs to be modified to tell it my mailbox is now on a different server?  I'm sure there are large installations that require multiple Exchange servers, so I feel confident that Cisco has done this before.  For us, this is only temporary and when everyone is moved and feels good about the change, we'll remove the old Exchange box and run solely off the new cluster.

Any advice you could give us would be greatly appreciated.

Thanks.

Jeff Brittain
City of Hickory, NC