currently we have one Domain Controller that have 15 users and cup off services(hMailServer, IIS, DNS, Active Directory). Now the owners of the firm created two new firms which computers and networks are my responsibility. Now i wonder how exactly to join users in existing domain.
Did you think that is a good idea to just include all computers and user from all firms under one domain or there is another solution ? Did some of you run into this kind of situation and what did you do ?
Brent, Dan thank for info guys. For now i will follow Brent advice until we get the new server witch we will virtualize and the old server will be our second DC on different location. Heck we even might think some Pay-as-you-go VPS solution for DC redundancy.