Local Zones

Create a file called /var/named/named.local on both the main DNS server (1.2.3.2) and the secondary server (1.2.3.3) and put this data in it:

$TTL	86400
@       IN      SOA     localhost. root.localhost.  (
                                      1997022700 ; Serial
                                      28800      ; Refresh
                                      14400      ; Retry
                                      3600000    ; Expire
                                      86400 )    ; Minimum
              IN      NS      localhost.

1       IN      PTR     localhost.

Now all you have to do is create the forward zone and the reverse zones.