I have a Windows 2008 R2 server on an isolated, (no internet connectivity), network. The server is providing DHCP and DNS.
The server was delivered to me configured with the domain name set to "testareaisolan". No dot anything as part of the domain name.
It is the only server on this isolated network. There is no Active Directory.
Short name resolution does not work, though "long" name resolution does. In other words, if I ping "t94ups.testareaisolan" I get a response. If I ping just "t94ups" I eventually get "unknown host".
From what I have read, it could be due to the "illegal" domain name.
How do I go about changing the domain name to "testareaisolan.something"? And if I do so, is it likely to fix the short name resolution problem?