We have a server that is running 2003 SBS and is Active Directory Controller. When I try to login to the domain, I receive a message that the domain is not available. I have configured my user account and permissions accordingly. This is a problem that has been observed by others at our firm. It takes multiple attempts to finally have the server accept your login. Does anyone have any ideas about how to troubleshoot this? Should I look at the DNS or the AD Settings? Help!
Make sure the only DNS servers your clients have are valid DNS servers for the domain (in this case, they'll probably only have 1 DNS server and it will be the SBS server)
Also, set this group policy to true:
Computer Configuration -> Administrative Templates -> System -> Logon -> Always wait for the network at computer startup and logon