Currently, I have a xserve with private IP 10.0.0.1. My xserve is behind a firewall, I perform a 1 to 1 NAT from private IP 10.0.0.1 to wan IP 200.200.201.3. I wanted to ask how should I configure the DNS of the xserve as it is hosting my primary DNS. Should I configure the DNS to point the records to internal IP address or external IP address. Or I need to have both?