Setting up a secondary DNS Server
From SuperbHosting Support Wiki
If you have a Parallels Plesk server running as a primary DNS server, you can follow the instructions below to set up a secondary (slave) DNS server.
At first you should allow zone transfer for the secondary DNS server. To allow it, secondary DNS server's IP should be listed in NS records for zones or it should be added to Access Control List (ACL). To manage the common ACL containing all hosts to which DNS zone transfers for all zones are allowed, switch to the Transfer Restrictions tab on the DNS management page. Then create all needed zones on the secondary DNS server with slave type, for example:
zone "example.com" { type slave; file "example.com.zone"; masters { 192.168.0.1; }; };
That is all. Now slave DNS server will get zones information from Parallels Plesk (master DNS server).
