Date: 01/19/06 (Computer Geeks)    Keywords: no keywords

I completely messed up DNS on a 2003 server today and have a few questions on how things work. First, under _msdcs.domain.local, which is now gone, there was a alias (CNAME) that was a GUID. How is this GUID determined? I have the choice of demoting the DC then promoting again, which will solve my problem but then I lose my AD (not to mention that I attempted that once on this server before and ended up having to install the OS from scratch). Don’t want to do that. Next I can manually recreate the _msdcs.domain.local subdomain in DNS, I fell I can do this fairly easily with the exception of the CNAME GUID and the domain GUID. Are these necessary for a single server environment? If I recreate the dc, gc, and pdc files will that be sufficient? If not are the GUIDs created somehow for the specific machine or are they just randomly assigned? Are they stored somewhere in AD so that I can recover them, and if I can’t recover them will assigning new random GUIDs cause problems? I’ve been all over the net trying to answer these questions and would really appreciate any input.
Thank You in advance

Source: http://community.livejournal.com/computergeeks/864013.html