Originally Posted by falko
Do you also use MyDNS on the slave? Is the slave an ISPConfig mirror, or is there no ISPConfig on that system?
The 2nd. DNS system is powerdns
, and this is not a mirror. Just only a simple CentOS system in the world. It's already configured to accept any communcation over TCP and UDP port 53 from my ISPconfig system (MyDNS).