There is a message in my webmaster tool. "Google couldn't access your site because of a DNS error". There are 3 things Server Connectivity Ok Robots.txt fetch Ok DNS Shows any instances when Googlebot couldn’t communicate with the DNS server. I am seeing this issue on 5 different websites. All of these sites are hosted on the same server. I have confirmed it with my hosting company and there is nothing wrong with their DNS. Is there something wrong with google or what? I tried to fetch as google and it works fine. Please tell me what should I do to get it fixed? What impact will it have on my sites or? Any solution for this?
Why don't you post your problem in Google Product Support forum. Its best that you contact the source for this before the problem grow big.
Check your htacess file and run WooRank or similar online testing tool to perhaps show you what is the problem. It seems that is related to your site or with a particular module/plugin. Check also your error log provided by the hosting company (find it with FTP software).
DNS error in Google webmaster tool, first check this error try to talk with this company from where you are taking services.
Yeah, I agree with you. I have used Googe Webmaster Tool for several years and have not noticed such issue. But, the Google support probably knows something about it.