$ORIGIN example.com.
$TTL 60
@ IN SOA ns1.example.com. hostmaster.example.com. (1 43200 900 1814400 7200)
-; these need #2390
-; IN 20 NS ns1
-; NS ns2
- IN 20 NS ns1.example.com.
- NS ns2.example.com.
+ IN 20 NS ns1
+ NS ns2
ns1 IN 30 A 192.168.1.102
-; these need #2390
-; 70 NS ns3
-; IN NS ns4
- 70 NS ns3.example.com.
- IN NS ns4.example.com.
+ 70 NS ns3
+ IN NS ns4
10 IN MX 10 mail.example.com.
ns2 80 A 1.1.1.1
ns3 IN A 2.2.2.2