I have a customer that has a Win 2K domain with Exchange 5.5. The Unity is version 3.0.2 and has Win 2K and Exchange 5.5. The customer is going to upgrade their Exchange to Exchange 2K. Are my only options to keep Unity unified be to uninstall and re-install everything or can I just upgrade the Unity server to exchange 2K as well? I am not sure if the second option is supported. Thanks in advance.