I have a Proxy Server that directs all of my traffic to the internet, it has its DNS set to 4 different numbers, two from my internet provider, and two from Google. Works all the time.
I have three domain servers, none of them are DNS Servers, and all have their DNS supplied by the Proxy Above. They get Internet, and can see workstations on their network.
My workstations have an IP address linking them to one of the Domains, and their gateway points to the Proxy above.
And their DNS is the Proxy above, and then the secondary DNS points to the Server of their Domain.
I am wondering, should I have them get their DNS from the Server of their domain, that in turn directs them to the Proxy for Internet resolution? (making each domain server a DNS server), should I use host files to reduce usage of the DNS for internal connectivity?
So, I guess what I am really asking, What should the preferred DNS server, and the Alternate DNS server be on the following:
Domain Server (with an Internet Proxy Server)
Workstation (With a Domain Server, and an Internet Proxy Server)
And should I have an internal DNS server?