OpenVPN Rock On, No DNS

I am able to connect over VPN to the Open VPN server on the Rockstor server. Everything works. Pinging inside the network and outside the network works. What doesn’t work is DNS. Therefore I can’t access any hostnames either in the network or outside. Does anyone know how I would be able to fix this?

Much thanks!

How does your dns-setup look? I have bind and had to add the vpn-network to the allowed list. Something like