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Exchange 2003 and Global Catalogs

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3 replies

by ncallahan

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I am trying to decommission and old Windows 2003 box that is a DC and a GC. I know how to do this. I have already reassigned roles and I know the steps to disable the GC function and enable it on its replacement. However, when I disable the GC function on this old box, Exchange will not startup properly. It seems that Exchange 2003 has a bond with this DC/GC. I hope someone can tell me what I am missing. I did not find anything on Technet that was useful to me.

3 replies

by gupnit

Hi,

No No No....do you have another DC in place before you shut this down. If yes great, but make sure that the other DC is configured to be a Global Catalog Server via AD Sites and Services (5 minute wait time before reboot) http://support.microsoft.com/kb/313994

Exchange is tighly integrated with AD and would not work at all without AD. And well GC is referenced by Exchange for almost everything from mail transfer/authentication etc etc. DSAccess uses DNS to locate domain controllers and Global Catalog servers i
Looks for SRV records located in the _msdcs.dc.gc._tcp folder and change it to second DC

A good link that will explain things to you ::: http://searchexchange.techtarget.com/originalContent/0,289142,sid43_gci1119795,00.html

Hope this helps

Thanks
Nitin Gupta (gupnit)
http://www.nitingupta.in

by ncallahan

Ah, I guess I didn't mention that. Yes, I did have a DC configured as a GC before I demoted my old DC. But Exchange didn't automatically recognize it as a GC. I even tried manually inserting the name of the new DC (under the Server - Directory Access tab in Exchnage System Manager). But the Exchange Server would just not start.

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