Understanding AD Functionality Modes and Their Relationship to Exchange Groups

Exchange Server 2003 and Active Directory functionality was designed to break through the constraints that limited Exchange 5.5 implementations. In order to accomplish this, however, levels of compatibility with downlevel NT domains and Exchange 5.5 organizations was required. These requirements stipulated the creation of several functional modes for AD and Exchange that limit the application of new functionality. Several of the limitations of the AD functional modes in particular impact Exchange Server 2003 itself, specifically Active Directory group functionality. Consequently, a firm grasp of these concepts is warranted.

Understanding Windows Group Types

Groups ...

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