On Mon, Mar 09, 2015 at 10:07:55AM +0300, Mohammed Ejaz wrote: > This lately we have been receiving complain from our customer that > they are unable to open the websites when they use our DNS server > (ns1.cyberia.net.sa) , one of the Eg. Is www.twitter.com, it works > only If I removed my internal cache it works for some time. And > after some time it won't. > > Our DNS sometimes resolves the domain and sometimes are not
This is not enough information to be able to diagnose the problem. Other posters have already guessed that you might not have had recursion enabled for your clients, but that's not consistent with the SERVFAIL result you showed below. > Default Server: ns1.cyberia.net.sa > Address: 212.119.64.2 > > > www.twitter.com > Server: ns1.cyberia.net.sa > Address: 212.119.64.2 > > *** ns1.cyberia.net.sa can't find www.twitter.com: Server failed Two suggestions: first, get rid of nslookup. Use dig and share the dig query and result with the list. Second, check your logs for the exact time of these SERVFAIL responses you're seeing. Sometimes these will be logged. -- http://rob0.nodns4.us/ Offlist GMX mail is seen only if "/dev/rob0" is in the Subject: _______________________________________________ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
