I recently installed Windows Server 2008 R2 server. I installed Exchange 2010 on it and everything is working fine so far. I was just fine tuning some things and realized that active directory is installed. I can see all users and computers on the domain. The problem is I did not set this up as a domain controller (or even a secondary dc). At least not on purpose. Is this something different in R2 or did I make a mistake somewhere? Is there any problem with this?