I need to setup a new Windows 2012 R2 server for a client. This server will also serve and a AD DC. I want to set the AD Domain name the same as the public website this company owns _ _ _ _ _ _ _ _funeralservice.com (27 characters including .com). This company does not own another public domain name. I know that the NETBION name allows up to 15 characters, and I would like it to match the domain name. What are my options if any?
So if I name the Domain name the same as the public domain name ( _ _ _ _ _ _ _ _funeralservice.com), then the user login will be _ _ _ _ _ _ _ _funeral\User1. I mean this will all work, but its a bit awkward that they do not match. I was just thinking of going with the .local route, but all the articles I have found suggest not doing so. What would be the best resolution? I do not believe the client is willing to purchase another shorter public domain.
Also, should the domain include a subdomain such as internal. _ _ _ _ _ _ _ _funeralservice.com, or LAN. _ _ _ _ _ _ _ _funeralservice.com? I have heard references there is a need to create a subdomain for the the AD domain name to avoid future conflicts. I am not sure about the need to do all of that though. I do not want to complicate things for a very small office network with one or two servers with less than 10 employees. What's your take on all of this?