I have the following questions about setting an active directory, that already has users and a domain, (i.e. internaldomain.edu) and real domain (i.e mydomain.edu.), and I have seeing many examples of the integration of AD with linux and usually they have a domain like intranet.mydomain.edu. Should I change "internaldomain.edu" to intranet.mydomain.edu or to mydomain.edu, or I can leave that internaldomain.edu like it is and create another domain. I am a littlebit confused with these, I know one is the windows domain but I dont know if that affects my email users.