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=roycemedical.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/
