I have single forest AD domain with multiple AD sites.
I'm about to decommission the old Windows Server 2003 Domain Controller and with AD integrated DNS in each of the AD Sites.
What manual steps should I do to make sure that the DNS and AD replication can still be working without any issue?
Regarding the Global Catalog that is used by the Exchange Server 2010 SP3 in Data Center AD site, do I need to do anything to prevent email submission issue ?
Thanks in advance.