Create A Forum - Support Forums

Just to amplify, I have added my domain to the system, but when I click 'Update forum URL', I receive an error message which reads "Domain name is not setup correctly! Please make sure that you own the domain name and that you have it pointed correctly!"

Any idea how I'm supposed to set up my domain name properly and point it correctly? There doesn't seem to be any guidelines as to how one should achieve such a thing.