Can I create an Active Directory domain with external DNS name?
I'm creating a new domain for a department in the district who has a separate setup than the rest of our district, and I've always used .local domains in the past. However, for this setup I'm thinking of using the actual domain name, <department.district.province.country>. Now, if I use that domain name when I configure this new server running Windows Server 2012 Standard when I'm adding the Active Directory role, can anyone see any downsides? This server also hosts the website for this department via IIS [previously 6 on 2003, now will be 8 on 2012], which is accessed at <department.district.province.country>, the same domain. As I said, in the past, I've used .local on their last network [XP/Server 2003, which I'm currently switching them from and then updating their laptops to Windows 7 and connecting to the new domain once I've configured it].
Does anyone see a problem with using the same domain name as the internal Active Directory Domain? I'd usually think not, but I seem to remember in University at one point our instructor saying "if you make the domain name the same as your external domain name you may have some issues". Any advice would be great! I plan to install the Active Directory roll today. Thanks in advance!