Post Migration Blues...
We did a 3.1(5) upgrade to 4.0(3) in a 5.5/2K3 enviroment with 5.5 as the partner server. Unity works alright with the Exch 5.5 subscribers, but when we move people to Exch 2K3 server they loose UM, MWI, and are unable to delete messages. Does anyone reading this post have any ideas on what will resolve these issues? I was thinking of changing the partner server in a maint~window and see if this resolves the issue. I read a few posts that suggested changing the partner server to Exch 2K3, and things would be chipper, but I am wearry of an outage. For now 99.9% of subscribers reside on Exch 5.5 and only a few on Exch 2K3 for testing. Again any advisement would be key.
Thanks,
Aaron