Could that be the fact that maybe your DNS server is unreachable from their checker? It could be that your DNS server is under load as well. Why don't you try checking someone elses Reverse entry regularly that isn't near your location to see if it really is a case of your server or the web site.....
Craig :) -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of IMail Admin at BC Web Sent: Thursday, January 24, 2002 2:04 PM To: [EMAIL PROTECTED] Subject: Re: [IMail Forum] How to confirm Reverse DNS is working? If someone else doesn't mention it first, the dnsreport tool, which is extremely cool and useful, is unreliable in checking reverse pointers for MX records. We KNOW we have the reverse pointers configured correctly, and yet sometimes dnsreport reports "no reverse pointer." Even odder, it can find the reverse pointer one day and not the next. Ben Bednarz BC Web ----- Original Message ----- From: "Alan Walters" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Wednesday, January 23, 2002 6:20 PM Subject: [IMail Forum] How to confirm Reverse DNS is working? > I'm hoping that somebody can help me confirm that my ISP's have setup Reverse DNS for our Mail > Server correctly. > > Using the neat tool at http://www.dnsreport.com/tools/dnsreport.ch?domain=roycemedical.com I was > able to determine that we didn't have a Reverse DNS entry, which explained why some of our email > was being rejected by other servers. > > I contacted AT&T, who is the owner of our Managed Internet Service IP Address Block. They > responded that since we already had DNS setup by a local company (Over The Net, who have been > hosting our Website prior to us getting AT&T), that OTN should create the PTR Record. OTN claimed > they couldn't legally create a PTR Record which pointed back to an AT&T Address Block that OTN > didn't own. > > AT&T finally agreed to delegate Authority for our Address Block to OTN's Name Servers, allowing OTN > to create a PTR. Now when I use > http://www.dnsreport.com/tools/dnsreport.ch?domain=roycemedical.com I get neither a PASS nor a FAIL > on the Reverse DNS section. It seems like the test just times out waiting for a response. > > If I try using http://www.dnsstuff.com/tools/ptr.ch?ip=12.35.200.18 it responds with: > > >How I am searching: > >Searching for PTR record for 18.200.35.12.in-addr.arpa at d.root-servers.net: Got referral to > CMTU.MT.NS.ELS-GMS.ATT.NET. > >Searching for PTR record for 18.200.35.12.in-addr.arpa at CMTU.MT.NS.ELS-GMS.ATT.NET.: Reports > 18.200.35.12.in-addr.arpa. > > > >Answer: > >12.35.200.18 PTR record: 18.200.35.12.in-addr.arpa. [TTL = 83000 seconds] > > > >Details: > >You have one or more obviously bogus PTR records (pointing to in-addr.arpa). > > What does it mean by 'bogus' PTR? > > I also found this 'dig' Website: > http://us.mirror.menandmice.com/cgi-bin/DoDig?host=ns1.otn.com&domain=roycem edical.com&type=PTR > > But I don't know how to interpret the results? > > Alan Walters > Director of I.T. > Royce Medical > > [Virus and worry-free with Declude] > > > > Please visit http://www.ipswitch.com/support/mailing-lists.html > to be removed from this list. > > An Archive of this list is available at: > http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ > Please visit http://www.ipswitch.com/support/mailing-lists.html to be removed from this list. An Archive of this list is available at: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Please visit http://www.ipswitch.com/support/mailing-lists.html to be removed from this list. An Archive of this list is available at: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/
