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Reverse DNS look up error loop?

For some reason when I do a reverse DNS look up on DNSstuff.com, I get an error saying "It looks like you've stuck me in a loop."  

How can I fix it?  I have called our ISP to set it up and they said it has  been done.
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Chris Dent
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It depends what's wrong.

The message implies that you never get anything more than referrals to other DNS servers when trying to get the answer.

Are you willing to post the IP so we can try it out?

Chris
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ASKER

sure I trust you guyz,  the IP is 69.4.191.155.
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Oh and make sure that when you contact your ISP that you make clear it's looping between ARIN and Level3.net, perhaps give them a copy of your output from dnsstuff:


Asking e.root-servers.net for 155.191.4.69.in-addr.arpa PTR record:  
       e.root-servers.net says to go to indigo.arin.net. (zone: 69.in-addr.arpa.)
Asking indigo.arin.net. for 155.191.4.69.in-addr.arpa PTR record:  
       indigo.arin.net [192.31.80.32] says to go to ns1.level3.net. (zone: 191.4.69.in-addr.arpa.)
Asking ns1.level3.net. for 155.191.4.69.in-addr.arpa PTR record:  
       ns1.level3.net [209.244.0.1] says to go to K.ROOT-SERVERS.NET. (zone: (root))
Asking K.ROOT-SERVERS.NET. for 155.191.4.69.in-addr.arpa PTR record:  
       k.root-servers.net [193.0.14.129] says to go to indigo.arin.net. (zone: 69.in-addr.arpa.)
Asking indigo.arin.net. for 155.191.4.69.in-addr.arpa PTR record:  
       indigo.arin.net [192.31.80.32] says to go to ns2.level3.net. (zone: 191.4.69.in-addr.arpa.)
Asking ns2.level3.net. for 155.191.4.69.in-addr.arpa PTR record:  
       ns2.level3.net [209.244.0.2] says to go to M.ROOT-SERVERS.NET. (zone: (root))
Asking M.ROOT-SERVERS.NET. for 155.191.4.69.in-addr.arpa PTR record:  
       m.root-servers.net [202.12.27.33] says to go to figwort.ARIN.NET. (zone: 69.in-addr.arpa.)
Asking figwort.ARIN.NET. for 155.191.4.69.in-addr.arpa PTR record:  
       figwort.arin.net [192.42.93.32] says to go to ns1.level3.net. (zone: 191.4.69.in-addr.arpa.)
Asking ns1.level3.net. for 155.191.4.69.in-addr.arpa PTR record:  
       ns1.level3.net [209.244.0.1] says to go to D.ROOT-SERVERS.NET. (zone: (root))
Asking D.ROOT-SERVERS.NET. for 155.191.4.69.in-addr.arpa PTR record:  
       d.root-servers.net [128.8.10.90] says to go to epazote.ARIN.NET. (zone: 69.in-addr.arpa.)
Asking epazote.ARIN.NET. for 155.191.4.69.in-addr.arpa PTR record:  
       epazote.arin.net [192.41.162.32] says to go to ns2.level3.net. (zone: 191.4.69.in-addr.arpa.)
Asking ns2.level3.net. for 155.191.4.69.in-addr.arpa PTR record:  
       ns2.level3.net [209.244.0.2] says to go to L.ROOT-SERVERS.NET. (zone: (root))
Asking L.ROOT-SERVERS.NET. for 155.191.4.69.in-addr.arpa PTR record:  
       l.root-servers.net [198.32.64.12] says to go to indigo.arin.net. (zone: 69.in-addr.arpa.)
Asking indigo.arin.net. for 155.191.4.69.in-addr.arpa PTR record:  
       indigo.arin.net [192.31.80.32] says to go to ns1.level3.net. (zone: 191.4.69.in-addr.arpa.)
Asking ns1.level3.net. for 155.191.4.69.in-addr.arpa PTR record:  
       ns1.level3.net [209.244.0.1] says to go to M.ROOT-SERVERS.NET. (zone: (root))
Asking M.ROOT-SERVERS.NET. for 155.191.4.69.in-addr.arpa PTR record:  
       m.root-servers.net [202.12.27.33] says to go to henna.ARIN.NET. (zone: 69.in-addr.arpa.)
Asking henna.ARIN.NET. for 155.191.4.69.in-addr.arpa PTR record:  
       henna.arin.net [192.26.92.32] says to go to ns2.level3.net. (zone: 191.4.69.in-addr.arpa.)
Asking ns2.level3.net. for 155.191.4.69.in-addr.arpa PTR record:  
       ns2.level3.net [209.244.0.2] says to go to B.ROOT-SERVERS.NET. (zone: (root))
Asking B.ROOT-SERVERS.NET. for 155.191.4.69.in-addr.arpa PTR record:  
       b.root-servers.net [192.228.79.201] says to go to epazote.ARIN.NET. (zone: 69.in-addr.arpa.)
Asking epazote.ARIN.NET. for 155.191.4.69.in-addr.arpa PTR record:  
       epazote.arin.net [192.41.162.32] says to go to ns1.level3.net. (zone: 191.4.69.in-addr.arpa.)
Asking ns1.level3.net. for 155.191.4.69.in-addr.arpa PTR record:  
       ns1.level3.net [209.244.0.1] says to go to B.ROOT-SERVERS.NET. (zone: (root))

Error: It looks like you've stuck me in a loop!.


Chris
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ASKER

Wow, is it really that complicated?  My ISP says there''s nothing we can do but wait.  I'm just making efforts to speed up the process.  I've been calling them twice, everyday to get an update, but nothing has changed for the past whole week when I called in the request for the reverse DNS

Helpful of them, it's entirely possible that something is being setup, but I'm not convinced, they're just not that slow.

Unless they have definate grounds for doing it differently, as far as I can see it should be raised with your ISP's ISP. Doesn't leave you in a very helpful position though.

Chris
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ASKER

OK it looks like they finally fixed it.  But I still can't email AOL.  

I did a test email to ipconfirm@postmaster.aol.com and I got a

"Your connecting IP is: 69.4.191.154" This is our Firewall IP

How can I get my exchange server to connect with  69.4.191.155? THis is my Exchange external IP

Please help

That's down to your Firewall, afraid I can't help too much with that aspect I'm afraid.

I believe you need to configure it so it translates the internal IP of the Exchange to the Public IP and sends out traffic with that as a source. Basically, NAT in the other direction (outbound as well as inbound).

Chris
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ASKER

Thanks for your help Chris!  Yah it was a setting on my Firewall that I forgot to configure.

Im just happy I that the Reverse DNS is working now!

Great stuff :)

Chris