Domain level? Exchange Level?

On October 25, 2005, in SBS Installation, by

From a question from the mailbag today [of which I answered one from an Exchange viewpoint] the question was “What’s SBS’s domain level?”

A default SBS will have a Domain functional level of “Windows 2000 Native” and a Forest functional level of Windows 2000

Windows 2000 DOMAIN of mixed mode will support Win NT 4/Win2k and Windows 2003.  Windows 2000 native will support 2000 and 2003.  A Windows 2003 “interim“ will support NT and 2003 domain controllers, and of course, last but not least Windows 2003 functional level will support Windows 2003 only.

Now for SBS you can only raise it to Windows 2003.  You can swing up from a NT domain controller using a variety of methods, but honestly I think I’d want anything NT based to be just a member server and not part of my domain controller structure.  You are introducing all the lack of security on those NT platforms in my opinion.

A default install will have an Exchange of Mixed mode.  Now I’ve raised it to Native Exchange since I have no need to connect to an Exchange 5.5 box.


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