I have a Unity 4.0(4) VM server that has been connected (when it was installed) to an Exchange 2003 server. Everything has been running fine, and we added 2 other Exchange servers (2003 as well) and ran the permissions wizard and it picked them up and users on them as well. But, the first Exchange server is slated to be decommissioned, and I wondered if there was anything that I needed to do in this instance; it appears that everything looks fine from the other Exchange servers, but did not know what kind of impact (if any) this would cause to the Unity server