Question : The impact of replacing the domain controller on the exchange server

I have Exchange servers 2007 distributed in several offices, the network is a single domain (windows server 2003) and there is a domain controller in each office, one of the domain controllers need to be replaced because of hardware issues.
I want to know what is the impact of replacing the domain controller on the exchange server, and what actions need to be done on the exchange server.

Answer : The impact of replacing the domain controller on the exchange server

Rant32 has it nailed, however the recommendation is to have one GC in each site where there is an Exchange Server. Also, if your forest consists of a single domain, you should make every DC also a GC. I multi-domain forests placing GC's is a bit more involved.

Mass2612, if you blank the "Modify Configuration Domain Controller" setting, Exchange will select it's most appropriate DC. Only populate this setting if you're experiencing problems with the default, which is blank.