Named.conf

Zone files

This is a simple zone file which corresponds to the masterdomain.net entry outlined in the sample named.conf above. In our example configuration, this file is /etc/namedb/zones/masterdomain.net.

$ORIGIN net.
$TTL 5m

masterdomain    IN     SOA    www.masterdomain.net. hostmaster.www.masterdomain.net. (
                                  1               ; serial
                                  4h              ; refresh
                                  15m             ; retry
                                  8h              ; expire
                                  4m)             ; negative caching TTL
                IN      NS      ns1.masterdomain.net.
                IN      NS      ns2.masterdomain.net.
                MX      10      mail.masterdomain.net.
                IN      A       68.96.111.12

$ORIGIN masterdomain.net.
www             IN      CNAME   masterdomain.net.
ns1             IN      A       68.96.111.10
ns2             IN      A       68.96.111.11

This is a very simple (but serviceable) zone file, with one webserver that responds to either masterdomain.net or www.masterdomain.net, and two individual nameservers. (These nameservers will also have A records configured in the root servers, since masterdomain.net is a second level domain. For more complex examples, see also DNS record types and BIND (dynamic DNS).