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Tracing MX records to its mail server

Posted on 2005-04-29
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Last Modified: 2012-05-05
Dear Experts,
2 part question. I am trying to assist a poetential client of ours with his email. I used a DNS query to try and find his MX records. I typed in his internet domain name and his name server. Nothing comes up. The strange part is, he is using email addresses with his internet domain name, e.x. name@domainname.com but his in going and out going is a private IP address. My problem is that i cannot find where his MX records are sitting? I am also mystified on how he is even able to use his email? Although, he does complain of sending an email out and getting a response "unknown host" but an hour later resending the same email and it goes through...Unfortunately my client has no idea either.-------I ran the DNS Query from 2 external locations and not on his network and there is no domain name found. I already went to dnsstuff and i found a name server. But the name server is strange as it reads, BLACKHOLE-1.IANA.ORG. I repeated the DNS query and was left with nothing still. The problem is that I nor my client knows how to set this up or fix this on his internal server. I need step by step instructions or advice. I do not have access to his Server.
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Question by:piratepatrol
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Chris Dent earned 2000 total points
ID: 13898868

I would start be running a WhoIs check for the Domain Name, DNSStuff has a WhoIs option. That should list the Name Servers for the domain.  If you can find those try asking one of them directly for the MX Record:

i.e.

C:\> nslookup
> server <IP of Name Server>
> set type=mx
> domain.com

If you find the domain but the name servers are listed incorrectly, or something like Blackhole-1, then you should contact the Domain Registrar and update those to the correct servers (depending on who it is that might be via a webpage form or by sending an e-mail in etc). Once you have the correct servers listed on the parent servers (generally referred to as Glue at the Parent Servers) any problems with the zone itself should be pretty easy to fix.

Hope that helps.

Chris
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by:piratepatrol
ID: 13927440
Thanks a bunch.
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