Home › Forums › Microsoft Networking and Management Services › DNS › Request sent from DNS server to another DNS server not listed as forwarder › Re: Request sent from DNS server to another DNS server not listed as forwarder
I run a standard 3-legged server network (internal, dmz, external), and our DNS sits in the Internal segment. When the dmz servers need DNS resolution, the firewall between the segments allows the traffic on the specified ports. Anything our DNS isn’t authoritative for gets recursively looked up by the forwarders configured. As with any DNS config, if the forwarders don’t answer in time, the root hints listing is queried. I’ve never heard of the kind of behavior the OP describes.