A lame server, is one that is specifed at the registrar to be
authoritative for a domain, but the server itself is not setup in this
manner. This is not a configuration issue on your end, but simply an
informational message. If you do not want to see these notifications,
you may put the following into your named.conf file at the top and
restart Bind:
logging {
category lame-servers { null; };
};