As a small part of a major project, we need to move from Exchange 5.5 to Exchange 2003. We also run Unity 4.0(5) on a seperate server, but it has Exchange 5.5 admin tools.
In our case, we will be changing the Exchange server (partner) AND the version of Exchange (5.5 to 2003) on it at the same time.
I'm a bit confused when I read through the documentation on changing the partner Exchange server. It says if you are changing both at the same time, to please refer to 'Upgrading Exchange on the Cisco Unity System' - In here, I cannot find a reference as to which procedure(s) to follow for our scenario.
Any help is greatly appreciated!