Problem to resolv local DNS

Hello everyone,

I’m having the following issue with Univention.
I already have a DNS server on my network that handles the domain teste.com.br.
When I installed Univention, I set the domain to teste.com.br, the hostname to dc01, and configured the DNS forwarder to point to my internal DNS servers.

However, websites that are registered on my internal DNS are not being resolved when clients are pointed to the Univention server.

I believe the issue is that Univention considers itself the authoritative DNS for the teste.com.br domain, and since its zone doesn’t contain entries for the domain’s websites, it returns a “not found” error.
What should I do to resolve this issue?