I'm having a problem with one of my DNS servers running server 2008 R2. I have 5 DNS servers on my network and all of them seem to be running fine except for one, which also happens to be my secondary DNS server for all the hosts on my network. On my LAN, DNS works fine on the server in question, but for all WAN hosts(e.g. websites), it does not. To isolate the server in question i statically assigned the servers IP address to the network adapter on my test machine.
I setup the DNS service on this server no different than on the other 4 servers, so I'm not sure what could be wrong. I checked the event log, which didn't identify any obvious problems. Any help from here would be appreciated. Thanks!