Re: Cannot resolve outbound host on OpenVPN server

I have two servers, both set up (bar names) identically. Both are on VPS, one uses the host dhcp setting for interfaces and dns, the other uses its own dns server and network interface settings. I have duplicated iptables.up.rules on both server so I am reasonably confident that is not the issue. From my client Mac I can connect to both VPN servers. One works perfectly, the other does not as it stops all internet traffic with the occasional message (on whatsmyip for example) cannot resolve host. I think my OpenVPN setup is fine and it is an underlying network issue causing the problem but I am not experienced enough to find or even understand it! So I am posting the problematic details to see if anyone can offer some guidance. TO be clear, I did not generate these iptables. They were generated by firewalld or the server or both will some intervention by me, i.e., masquerading and I am not a firewall expert! I am happy to simplify them if it can be done but the most important item is to understand why it works on one server but not the other.