Transitioning an Exchange 2007 SP3, in Windows 2003 SP2 (Native mode) Domain to Exchange 2010 SP1 . I am trying to verify that the new RBAC functionality works in a Windows 2003 (Native mode Domain ) or if it requires Windows 2008 Domain? All documentation I can find just states that Exchange 2010 requires Windows 2003 SP2 running in Native mode. Any confirmation either way is appreciated. John

There are no special requirements for RBAC model. you need to ensure that you meet the pre-requisites for installing Exchagne server 2010 and you are good with it. Dhruv