Hi, please how i should configure my DNS server to fix this errors? Code: http://www.intodns.com/hostman.cz
First ask your registrar to create glue records for ns1.hostman.cz and ns2.hostman.cz (see http://en.wikipedia.org/wiki/Domain_Name_System#Circular_dependencies_and_glue_records ). To switch off recursion, you can add allow-recursion { none; }; to the options section of your named.conf. Also, you should run your nameservers on different subnets.