I am facing an issue I don't quite know how to solve it.
So I have two internal dns servers, let's say dns1 and dns2. They serve a zone let's say z1.mydomain.com - and internally everything is working out fine.
Also, mydomain.com has a public DNS server that answers for the mydomain.com zone, and all I did was to add z1.mydomain.com to this zone to resolve from the outside.
My problem is when I try to ping z1.mydomain.com from the inside, I can't resolve host. I'm sure I'm missing something, but can someone please give me a help?