Checking zonefiles

To checkzone files one can use 'named-checkzone' command as:

named-checkzone <zone_name> <file_name>

to check description of zone named <zone_name> in file named <file_name>

Checking configuration

To check configuration file such as 'named.conf' use:

named-checkconf [<file_name>]

One of the parameters that can be tested for DNS servers is response time. We can use command:

dig @<nameserver_IP> <test_domain> | grep time

command to see how fast a given nameserver is able to resolve queried domain.