What are the Exchange Server 2007 licensing options?
Customers can purchase the Exchange Enterprise Client Access License (CAL) or the Exchange Standard CAL. The Exchange Enterprise CAL is sold as an add-on to the Exchange Standard CAL. Two server editions will continue to be offered: Exchange Server Enterprise Edition and Exchange Server Standard Edition. You can run either CAL together with either server edition. For more information about Exchange Server 2007 editions and Client Access Licenses, see Exchange Server 2007 Editions and Client Access Licenses.
