in my main DNS on every single zone zone "black.com" { type master; file "/etc/named/db.black"; allow-transfer { ipofslave; }; }; On My Slave this is on top of conf allow-notify { 192.168.1.59; }; this is on all zones on slave zone "black.com" { type slave; file "/etc/named/db.black"; masters { ipofmaindns; }; };