I have two Windows name servers, one that holds primary zones and the other that holds secondary zones. These servers are not part of a domain and host external zones. We allow each sites external firewalls to transfer zones from the primary server.
My question is if I want the firewalls to hold an authoritative copy of the zone do I have to list them in the Name Servers tab? Or can I just let them pull the zone and leave only the two Windows name servers in the name servers tab?