IN THIS CHAPTER
Two new roles within the Microsoft Exchange Server 2007 family are the Client Access server (CAS) and the Hub Transport server. In reality, these two roles are really specializations and evolutions of the original Exchange front-end and bridgehead server concepts, along with the Edge Transport server.
To see the place that the CAS and the Hub Transport server role hold in the constellation of Exchange 2007 roles, refer to Figure 17.1.
Figure 17.1. ...