⟩ How does an Exchange 5.5 site compare to an Exchange 2003 Routing Group or Administrative Group?
In a mixed mode Exchange environment the Exchange 2003 Administrative Group and Routing Group correspond to the Exchange 5.5 site. In a native Exchange 2000 environment, the Administrative Group is a group of Exchange objects sharing a common set of permissions and routing groups define how those servers communicate with one another. A single Administrative Group can contain several Routing Groups. Example: Your North American Exchange servers might be grouped in a single Administrative Group, but subdivided into several Routing Groups to optimize interserver communication. An Administrative Group contains zero or more Routing Groups.
