How to Configure Forwarders
Windows Server 2003 can take advantage of DNS forwarders. This feature forwards DNS requests to external servers. If a DNS server cannot find a resource record in its zones, it can send the request to another DNS server for additional attempts at resolution. A common scenario might be to configure forwarders to your ISP's DNS servers.

1. Click Start, point to Administrative Tools, and then click DNS.
2. Right-click ServerName, where ServerName is the name of the server, and then click the Forwarders tab.
3. Click a DNS domain in the DNS domain list. Or, click New, type the name of the DNS domain for which you want to forward queries in the DNS domain box, and then click OK.
4. In the Selected domain's forwarder IP address box, type the IP address of the first DNS server to which you want to forward, and then click Add.
5. Repeat step 4 to add the DNS servers to which you want to forward.
6. Click OK.