Question : DNS resolution Windows Internal DNS/External DNS

This is the scenario:

1. I have a windows internal DNS (integrated with AD).
2. We have an external DNS running on BIND that resolves DMZ to the external world.
3. OWA is being published to the external world as follows "webmail.domain.com" and has two different IP's associated with the record.

So a nslookup to "webmail.domain.com"  will result for example on 152.34.100.1 and 40.30.01.22  each IP belongs to a different ISP provider.

We would like that the internal resolutio (computers from the inside) will always resolve when connecting to the "webmail.domain.com" to the following IP 40.30.01.22 so will never go to the 152.34.100.1.

Any thoughts? Thank you!

 

 

Answer : DNS resolution Windows Internal DNS/External DNS

The A record for the internal doman.com DNS would look like any other A record, but it will have the external IP.  So you might have an internal IP and an external IP specified like this:

user1   Host(A)     192.168.0.5
www     Host(A)     40.30.1.22