[CentOS] lame server errors on my DNS server

Dear Sir,

i m not a professional in DNS but have setup my DNS server with centos 5 runnign for almost a year ( before the same server had centos 4) and was workin fine

But jus i receive a mail from ripe stating that my there r lame server errors on my DNS server

i have bind ver 9.3 running

the errors were

Our checks revealed the following error(s) :

Zone: xx.xx.xx.in-addr.arpa Nameserver: ns1.kmun.gov.kw (IP address unknown) Error: Unable to resolve nameserver Nameserver: ns2.kmun.gov.kw (IP address unknown) Error: Unable to resolve nameserver

apprecite if someone could help me as to which file could have misconfiguration errors .

no file has been modifies for long time

regards

fabian