I have a win 2008 r2 AD server that acts as the primary DNS for all clients on the network. I'm having some issues with the response times when resolving external domains and would like to add another DNS server to my network. The second DNS server would be running on windows web server edition so cannot support the active directory role. Simply setting the new DNS server as the secondary DNS for clients seems to balls up domain services for them. How is it possible to achieve this?