I am in the process of configuring three DCs to serve several load-balanced IIS boxes.
I first started this config two years ago. My config was only partially successful. I'm finally fixing things, but I'm having to clean up my old work, some of which were stopgap measures.
My three DCs are replicating their zones to one another. Looking at the forward lookup zones I notice that there is an instutional machine listed as a nameserver. This is outside of my domain. We probably did this as some stopgap DNS redundancy way back when. Probably doesn't matter one way or another, but I doubt it is even a Windows machine.
I am wondering if it has any business being there or if I should delete this external Nameserver.
WIll it cause harm/misconfiguration? Will it help?
Is there anything "tricky" to know about deleting it, or can I just kill the extra nameserver using the DNS GUI?