Forum Discussion
How to block Bing Chat public for organization users and allowing Bing Chat Enterprise
But how do you create a primary zone bing.com and a CNAME for www pointing to nochat.bing.com hosted by bing.com DNS servers? Won't the secondary DNS server also be answering for nochat.bing.com? Since the bing.com zone is on it.
Wouldn't you need to create a A record for nochat.bing.com as well? Thereby losing the whole point of using a CNAME?
No, because you only have a conditional forwarder setup for http://www.bing.com which then forwards to the secondary DNS server that holds the CNAME for http://www.bing.com which sends the client to nochat.bing.com which would be queried on the primary DNS server. Since there is no bing.com domain on the primary and no conditional forwarder it will use either root hints or your regular forwarders to lookup nochat.bing.com.
Yes, you are right! I just figured it out as well. It only forwards the http://www.bing.com query to my secondary DNS server. nochat.bing.com it looks up via bing.com DNS servers. Works like a charm.
🙂