Small home network. Server is a HP ML150 running ESXi 5.0.
Brought up a 2012 R2 vm box [DC2], turned it into a DC following the technet articles. Then I demoted my 2008 R2 DC vm [DC1]. All physical PCs work fine (log in/out, DHCP, DNS,...) and each can get to my 2012 R2 file/print server [FS2]. (also a vm)
The issue is with my Exchange 2010 on 2008 R2 [MAIL]. (also a vm)
Following the upgraded DC, mail had become inaccessible, login failures.
On the server, services show:
MS Exch. Address Book Starting
MS Exch. EdgeSync Stopping
MS Exch. Information Store Stopping
MS Exch. POP3 Stopping
MS Exch. RPC Client Access Starting
Also, when I try to go into "Network and Sharing Center", it hangs for a LONG time, but does eventually go in.
Verified all the DNS entries on the server are correct. (both point at DC2's IP, only)
IPCONFIG's are attached for the DC2 and MAIL servers.