Search Again: Re: PTR Problems From: Men & Mice Support Date: Thursday, February 17, 2000 Time: 9:35:00 pm At 2:04 PM -0500 2/17/2000, Mark S. Edwards wrote: >What kind of IP space do you have? Do you have an entire class C or do you >only have a few address from your ISP (like many DSL users do). If you only >have a few, I'm told that ISP's can't delegate PTR records down to your DNS >for anything less than a full class C. Not entirely true. Read RFC 2317 <http://www.faqs.org/rfcs/rfc2317.html>, which explains how to delegate a "classless subnet", i.e. a subnet smaller than a class C. >In this case, I understand the your ISP has to hold the PTR records for your >domain. > >DNS Expert tries to follow the delegations and expects to hit your name >servers, but never gets there, it would stop at your ISP's DNS. That's true in this case. >Mark > >on 2/17/00 1:47 PM, S.F. Sobczynski at stans@sigma4.com wrote: > >> Hi, >> >> We are a fairly new user of QuickDNS and DNS Expert and have >> configured QuickDNS through the assistant feature and then added some >> additional records. >> >> Our problem is we have had it up for about two weeks now during which >> most of the items seem to have propogated over the net except for the >> Reverse DNS entries. When we use DNS Expert to analyse the site it >> reports that there are no PTR records even though the system seems to >> show everything ok. >> >> Any ideas...the domain is sigma4.net Using that name, I found one of your IP addresses, 63.225.9.34. Here's the delegation, traced out from the root servers: from f.root-servers.net: 225.63.in-addr.arpa. NS ns1.uswest.net. 225.63.in-addr.arpa. NS ns2.dnvr.uswest.net. from ns1.uswest.net: 9.225.63.in-addr.arpa. NS ns1.uswest.net. 9.225.63.in-addr.arpa. NS ns2.dnvr.uswest.net. 9.225.63.in-addr.arpa. NS ns3.mn.uswest.net. The host or domain "34.9.225.63.in-addr.arpa." does not exist Talk to your ISP about resolving this. ____________________________________________________________________ Chris Buxton cbuxton@menandmice.com Men & Mice http://www.menandmice.com Makers of: QuickDNS Pro

Messages In This Thread: PTR Problems by S.F. Sobczynski on Feb 17, 2000 at 6:47:00 pm Re: PTR Problems by Mark S. Edwards on Feb 17, 2000 at 7:04:00 pm Re: PTR Problems by Men & Mice Support on Feb 17, 2000 at 9:35:00 pm Re: PTR Problems by Mark S. Edwards on Feb 17, 2000 at 9:52:00 pm