Currently in my small business I run a single DHCP server for my 200 clients on a Windows 2000 server (non DC). In an attempt to switch this service to a Server 2003 server (DC) I run into a problem. The service installs fine and once configured will give out addresses all day, but every address received from this server only will not go out past the firewall.
I have checked and rechecked the gateway address, DNS server addresses and even arghhhh. WINS, but everything is fine. If I attempt to switch from dynamic to static using the same information received from the dhcp server, I can gain my external access back again.
The server has a single network card that is configured as an adapter correctly in the dhcp service and will give out addresses fine.
My plan is to eventually reformat the original dhcp server and use it for redundancy, however I must get the new one working first (obviously!) Any help here would be great.