Migrating from TMG to UserGate, how to solve DNS problem?

Question

Domain Name System

Good afternoon,
There is AD + DHCP + WPAD on the network as a gateway, Forefront TMG + DNS is installed, we plan to migrate to UserGate, everyone has perfectly raised the server, installed UserGate on it, they also raised a secondary DNS server, UserGate is specified as the gateway in the workplace, DNS is installed as primary AD secondary Usergate, when entering 2ip or other site, it is displayed that Internet access is carried out by logging out through TMG.
If you turn off the external board on the TMG server. then it starts working fine through UserGate.
Is there a problem with DNS forwarding somewhere, I suppose or not?

Answer 1

It's more of a routing issue than a DNS issue.

Answer 2

Maksim , when you disable Automatic connection detection, the problem is solved, perhaps because WPAD is configured on the network? but on the test site a static IP address is set.