You need to create glue records for ns1.badbison.co.uk and ns2.zoneedit.com.badbison.co.uk. These links should give you the idea: http://en.wikipedia.org/wiki/Domain_Name_System#Circular_dependencies_and_glue_records http://www.howtoforge.com/ispconfig_dns_providerdomain_schlund
i thought id followed that guide to the t, adapting it for ispconfig3. Im not sure where it has got ns2.zoneedit.com.badbison.co.uk. from. it should only have ns1.badbison.co.uk and ns2.zoneedit.com how has it made this other address?