On one of my servers I keep getting a message saying: "Virtualmin's configuration has not been checked since it was last updated. Click the button below to verify it now." When I click the button I get the following message: "The status of your system is being checked to ensure that all enabled features are available, that the mail server is properly configured, and that quotas are active .. Virtualmin is configured to setup DNS zones, but this system is not setup to use itself as a DNS server. Either add 127.0.0.1 to the list of DNS servers, or turn off the BIND feature on the module config page. It appears that DHCP is being used to dynamically configure your network interfaces, which can cause the DNS servers to be set based on settings provided by the DHCP server. Using a static IP address is strongly recommended with Virtualmin."
I have tried adding 127.0.0.1 to the list of DNS servers, but each time I do it it appears to be set, after I apply and go back and check, it has disappeared and I still get the error message.