We have a customer running Unity 4.2 in two separate servers one for VM (all in one box) and another for UM with typical setup mail server off the box.
Now they want to upgrade Exchange to 2007 and put both VM and UM users on same box with mixed licensing. I know we have to upgrade Unity to 5.x to support Ex2k7 but what should we do to add those VM only users on the same box?
1. Does Unity support mixed VM/UM licensing with Exchg 2007?
2. Do we need a Exchange 2003 mail store just for VM only users?
3. Can we use the same exchange 2007 server withe separate OU for VM users.
4.If we have to add a separate exchange 2003 server for VM users, can this be installed on the Unity server itself or do we need a separate exchg2003 mail store server?
Thanks you so much for your help.