In message <20121130125333.gc9...@fantomas.sk>, Matus UHLAR - fantomas writes: > On 29.11.12 18:34, Jose Manuel Delgado G. wrote: > >about the other question, as to reduce the response time of my server when > >the domain does not exist? > > it is not the "domain does not exist" problem. This is the "the only > nameserver for a domain times out" problem, which can be only avoided either > by fixing the server or making it answer. Since there is just no workaround, > the only thing bind can do is to query (and timeout). > > >> > # dig @8.8.8.8 videolinedvd.com > > >2012/11/29 Chuck Swiger <cswi...@mac.com> > >> You've got two nameservers for the domain per WHOIS as: > >> > >> Domain servers in listed order: > >> NS1.VIDEOLINEDVD.COM > >> NS2.VIDEOLINEDVD.COM > >> > >> ...but they don't have A records setup. Your nameservers must have A > >> records: > > actually, they have glue A record in .com zone: > > ;; AUTHORITY SECTION: > videolinedvd.com. 172800 IN NS ns1.videolinedvd.com. > videolinedvd.com. 172800 IN NS ns2.videolinedvd.com. > > ;; ADDITIONAL SECTION: > ns1.videolinedvd.com. 172800 IN A 72.167.164.36 > ns2.videolinedvd.com. 172800 IN A 72.167.164.36
But when the recursive nameserver asks for the AAAA records for these two nameservers it gets told that the name is not valid and as the zone is more authorative than the parent the glue records get wiped out. The recursive server then has no address records for the nameservers and cached records that say that there are no records at those names. Further lookups fail for that zone. The zone is improperly delegated. Mark -- Mark Andrews, ISC 1 Seymour St., Dundas Valley, NSW 2117, Australia PHONE: +61 2 9871 4742 INTERNET: ma...@isc.org _______________________________________________ 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
