My company has a Windows Server 2003 SBS server they we would like to add an Exchange server to. My question is about CAL licenses and what actually is considered a connection. If two users are downloading their mail via POP, does that count as two connection and require two licenses? If two users both have a MUA running and connected to the Exchange IMAP server, does this count as a connection? What about other services such as calender synchronization? I am trying to decide how man CALs we will need to purchase that but I can not accurately determine this without knowing what Microsoft considers a connection to the machine. From my research I have only been able to verify that I need a CAL for each concurrent OWA connection. Any insight on this subject is appreciated. Thanks, Jordan

http://www.microsoft.com/WindowsSer... http://www.microsoft.com/windowsser... basically each and every client connection to exchange requires a cal.