I have a client that recently purchased a new business with a separately established windows domain.
The original company has 4 locations wither a DC at each location. the main DC is running 2003 Server as well as 1 remote site and the other 2 remote sites are newer and have 2008 Server.
The new business has 5 locations. All DC's at all sites are running 2008 RS SP1.
From what I have researched the domain forest function level should be 2003. But will having the new business at domain forest function level 2008 R2 cause an issue?
What I am trying to do is connect the two domains to each other so I can share resources and not have to maintain two separate sets of logins.
Is this possible?