CAS server or Client access server was introduced in Exchange 2007. With Exchange 2010, users/outlook/MAPI clients connect to the RPC Client Access service on the Client Access Server to access mailbox information from a mailbox server. If you ask me, which is the most important role in exchange 2010 I would say “CAS” “CAS” and … Continue reading Setting up static ports for Exchange 2010 CAS Server and Mailbox Server