I have an AD Integrated DNS Server + Domain Controller running on Windows 2003. Client PCs are authenticated via this AD root Domain, DNS server.
Scenario : Client PCs are authenticated to my AD Integrated DNS Server + Domain Controller. However, there is a new requirement whereby these PCs need to communicate with an External DNS server as well. Ex, when they need to access webmail.XXX.com from their PCs, this should route to an External DNS server as long as it realises that there is no such entry in my AD integrated DNS Server + Domain Controller. We cannot add a forwarder primarily as its a root "." server. We might not be able to delete the root and restart the DNS service due to any possible production issues etc.
If I create a Standalone DNS server with perhaps a forwarder request to an external DNS Server and if i want my Client PCs to be able to send a request when required (Ex. when they need to access webmail.xxx.com) What should I do ?
- Does my external DNS server need to be in the Domain as well ?
- Do i need to add an additional entry in my AD Integrated DNS Server + Domain Controller with an entry of my Standalone DNS Server (Hostname + IP) ?
What other alternatives are there pls ?