*** Improved by Wrobinson on 03/16/2008 ***
The answer to the question below does not appear to address the question being asked. There is no additional license required for Exchange ActiveSync (different from the ActiveSync desktop client mentioned below), so long as you already have Exchange CALs.
*** End Update ***
From what I have read no it does not. You don’t have to buy licenses for ActiveSync for exchange. You only need exchange email account licenses for each email account you have on your Exchange server.
From what Microsoft states for ActiveSync:
“You may install and use one copy of the software on each computer on your premises that you use to exchange data and software with portable devices powered by a Microsoft operating system.”
So you can install it on any computer that you use to sync the devices with. Version 4.5 shows it is compatible with the following OS’s:
“This software product is designed for use with computers operating on any one of the following Microsoft operating systems: Windows 2000 Service Pack 4; Windows Server 2003 Service Pack 1; Windows Server 2003 Service Pack 1 for Itanium-based Systems; Windows Server 2003, Standard x64 Edition; Windows XP Home Edition; Windows XP Professional Edition; Windows XP Media Center Edition; Windows XP Professional x64 Edition; Windows XP Service Pack 1; Windows XP Service Pack 2; Windows XP Tablet PC Edition.”
The license agreement is shown here.
Only Windows mobile can Sync with Exchange (not Symbian to Exchange via POP or IMAP). There are 2 licenses, one is your Windows mobile that bundle with your mobile. Another one is Exchange CAL.