We're in the process of purchasing an Exchange 2007 server. I've already purchased the software, and the 400 CAL's for Exchange.
While I was looking at OS software, I decided to go with Windows 2008 SP2, our current environment is 2003 R2.
So my question is, will I need a Windows CAL for all users connecting ti the exchange server either via Webmail or Outlook? Or would my 400 Exchange CALS work?
Thanks for any help you can offer on this