In message <20130207184127.ga23...@fantomas.sk>, Matus UHLAR - fantomas writes: > >Jim Pazarena <b...@paz.bz> wrote: > >> > >> while it can resolve "webmail.acrodex.com" ( 139.142.184.10 ) > >> it cannot reverse resolve 139.142.184.10 > > On 07.02.13 17:51, Tony Finch wrote: > >10.184.142.139.in-addr.arpa. CNAME 10.0-25.184.142.139.in-addr.arpa. > > > >0-25.184.142.139.in-addr.arpa. NS pluto.acrodex.com. > >0-25.184.142.139.in-addr.arpa. NS nova.acrodex.com. > >0-25.184.142.139.in-addr.arpa. NS saturn.acrodex.com. > > > >Nova does not exist. > > > >Pluto refuses most questions for 10.0-25.184.142.139.in-addr.arpa except > >if you ask for a PTR, in which case it replies with a bogus question > >section containing 139.0.184.142.in-addr.arpa. > > > >Saturn works OK for most questions, and returns a PTR record if you ask > >for ANY, but if you request a PTR directly it ignores you.
It actually returns a response with a mismatching question section. % dig 10.0-25.184.142.139.in-addr.arpa @saturn.acrodex.com +norec ptr ;; Question section mismatch: got 139.0.184.142.in-addr.arpa/PTR/IN ;; Question section mismatch: got 139.0.184.142.in-addr.arpa/PTR/IN ;; Question section mismatch: got 139.0.184.142.in-addr.arpa/PTR/IN ; <<>> DiG 9.10.0pre-alpha <<>> 10.0-25.184.142.139.in-addr.arpa @saturn.acrodex.com +norec ptr ;; global options: +cmd ;; connection timed out; no servers could be reached % > some kind of lame DNS "load balancers"? Looks like it. Something which intecepts the PTR queries and forwards other queries onto a full blown server. Mark > -- > Matus UHLAR - fantomas, uh...@fantomas.sk ; http://www.fantomas.sk/ > Warning: I wish NOT to receive e-mail advertising to this address. > Varovanie: na tuto adresu chcem NEDOSTAVAT akukolvek reklamnu postu. > Chernobyl was an Windows 95 beta test site. > _______________________________________________ > 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 -- 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
