How to create an A record within a domain so as not to violate the integrity of all zones?

Question

Domain Name System

Hello everyone, I have the following situation. There is an example.com domain with a fairly large number of records (the whole thing, of course, looks at the Internet). There is also an entry that refers to the ex1.example.com subdomain I need and it resolves to the external ip address of my network. From inside the network, I need that, upon request to ex1.example.com, users get to the ip address inside the network with the hosted service.

Answer 1

Use the Pinpoint DNS principle,
Create a DNS Zone on your DC - ex1.example.com - create an empty A record with your server's private address.
PS
Don't listen to the fact that it allegedly appeared in 2012r2 -) It's not a server feature - it's just DNS work (Split-DNS thing is too harsh - you get tired of synchronizing lists - PinpointDNS is a special case of SplitDNS - it's much more convenient to use it in corporate systems)

Answer 2

This is called split-dns. As far as I know, before win 2012 r2 inclusive, Windows did not know how. Perhaps in 2016 something came up with this.
Solutions: either put Bind or distribute dns servers that respond to external requests and that respond to internal ones.