Local domain DNS resolution not working using OpenVPN on a pfSense box

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http://serverfault.com – I am currently trying to setup an OpenVPN server with the intention of linking several servers together in order to run the backup jobs over the VPN. For this example, this is what I have: A pfSense server running OpenVPN (pfsense.vpn) Two clients: client1.vpn and client2.vpn OpenVPN / pfSense configured with the following settings: TUN mode Tunnel network: Local network: DNS forwarder enabled Inter-client communication enabled DNS-rebind check disabled OpenVPN pushes the default domain 'vpn' to clients OpenVPN pushes the default DNS server to clients (HowTos)