Exchange 2007 is licensed in per Server and CAL mode
You need a Server license for each running instance of Exchange on the server and CAL for every User and Device accessing the services of the Exchange Server
Did you know – Office Outlook is NOT provided as part of the Exchange CAL offering, this is a change from Exchange 2003, it is available stand-alone or as part of Office Pro Plus/Enterprise
Did you know – Office Outlook WEB ACCESS is provided as part of Exchange Standard CAL
Exchange Client Access Licenses <CAL> are offered in 2 flavours
Exchange Standard CAL and Exchange Enterprise CAL, Standard CAL will give you basic functionality, as below, Enterprise CAL fits on top of Standard CAL to give Enterprise functionality, both CALs are required to provide Enterprise functionality
Exchange Transition and Migration Plans next time…………..