hi I found many lines as follow in my log file: client 119.96.104.134#53410 (whoami.akamai.net): query (cache) 'whoami.akamai.net/A/IN' denied I searched about "whoami.akamai.net" and found it is a dns tool. can any body explain about it and if it is a useful tool, why my server denied it? what should I do? Many thanks.