DNS over OpenVPN question

[RobertoCantalapiedra]

Hello,
I'm running a pfsense 2.4 server on which I have an OpenVPN server instance through which remote users connects to my network.

I also have DNS resolver with some Host Overrides configured (e.g. pc1.domain.com -->192.168.0.99)

Now... I need remote users to be able to resolve my network hosts but I don't want to increase vpn traffic serving EVERY dns request on the clients if they surf the web while vpn is connected.

I mean, pfsense over the vpn should resolve pc1.network.com but not google.com

Is that possible?
Is that what happens if I check this or do I have to configure something else?

Thank you!