Reverse DNS problems

ngaccess at hotpop.com ngaccess at hotpop.com
Fri Mar 19 16:32:33 UTC 2004


First:
   Domain servers in listed order:
   HYDROGEN.SUEMILLS.COM        206.135.171.2
   HOROGW.SUEMILLS.COM          64.218.226.140

Goto networksolutions and login to your dns management and delete the 
host HOROGW.SUEMILLS.COM (or whatever they require you to do) and you 
need to add a second server for redundancy. (FWIW, your ISP is correct in 
saying they can't do it)

Next:
2.171.135.206.in-addr.arpa.
    alias = 2.0-26.171.135.206.in-addr.arpa.
2.0-26.171.135.206.in-addr.arpa.
    host = hydrogen.suemills.com.

This should simply be:
2.171.135.206.in-addr.arpa.
    host = hydrogen.suemills.com.

Then:
3.171.135.206.in-addr.arpa.
    alias = 3.0-26.171.135.206.in-addr.arpa.
3.0-26.171.135.206.in-addr.arpa.
    host = radon.suemills.com.

This is your mx record which there again should simply be:
3.171.135.206.in-addr.arpa.
    host = radon.suemills.com.

No 'alias' records ...


On 17 Mar 2004 at 16:38, John Emery wrote:
To:             	comp-protocols-dns-bind at isc.org
From:           	John Emery <nospam_john_nospam at suemills.com>
Subject:        	Reverse DNS problems
Date sent:      	Wed, 17 Mar 2004 16:38:38 -0800
Organization:   	Epoch Internet

> I'm trying to figure out why I can't modify the host lookup for our 
> primary mail server.  I have a revserse lookup file.  Any machine 
> pointing to our primary DNS server can do a reverse lookup on the mail 
> server:
> 
> # dig -x 206.135.171.3
> 
> ; <<>> DiG 9.2.2 <<>> -x 206.135.171.3
> ;; global options:  printcmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 61947
> ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 1
> 
> ;; QUESTION SECTION:
> ;3.171.135.206.in-addr.arpa.    IN      PTR
> 
> ;; ANSWER SECTION:
> 3.171.135.206.in-addr.arpa. 10800 IN    PTR     radon.suemills.com.
> 
> ;; AUTHORITY SECTION:
> 171.135.206.in-addr.arpa. 10800 IN      NS      hydrogen.suemills.com.
> 
> ;; ADDITIONAL SECTION:
> hydrogen.suemills.com.  86400   IN      A       206.135.171.2
> 
> ;; Query time: 2 msec
> ;; SERVER: 206.135.171.2#53(206.135.171.2)
> ;; WHEN: Wed Mar 17 16:27:43 2004
> ;; MSG SIZE  rcvd: 139
> 
> #
> 
> You'll notice that the Answer section gives "radon.suemills.com"
> 
> But, if I use an outside DNS server:
> 
> # dig @205.214.45.6 -x 206.135.171.3
> 
> ; <<>> DiG 9.2.2 <<>> @205.214.45.6 -x 206.135.171.3
> ;; global options:  printcmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 3955
> ;; flags: qr rd; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 2
> 
> ;; QUESTION SECTION:
> ;3.171.135.206.in-addr.arpa.    IN      PTR
> 
> ;; ANSWER SECTION:
> 3.171.135.206.in-addr.arpa. 14400 IN    CNAME 
> 3.0-26.171.135.206.in-addr.arpa.
> 
> ;; AUTHORITY SECTION:
> 0-26.171.135.206.in-addr.arpa. 14400 IN NS      horogw.suemills.com.
> 0-26.171.135.206.in-addr.arpa. 14400 IN NS      hydrogen.suemills.com.
> 
> ;; ADDITIONAL SECTION:
> horogw.suemills.com.    67869   IN      A       64.218.226.140
> hydrogen.suemills.com.  67869   IN      A       206.135.171.2
> 
> ;; Query time: 76 msec
> ;; SERVER: 205.214.45.6#53(205.214.45.6)
> ;; WHEN: Wed Mar 17 16:29:06 2004
> ;; MSG SIZE  rcvd: 153
> 
> #
> 
> The Answer section gives "3.0-26.171.135.206.in-addr.arpa." as the host 
> name.
> 
> I'm having trouble sendin email out from this machine, to some domains, 
> as they require a valid reverse host lookup.
> 
> I called our ISP, and they say, the reverse authority has been deligated 
> to our primary DNS servers.  If I need anything changed, in the reverse 
> zone, that is of course, my responsibility.  AND, if I need any reverse 
> lookup, authoritative DNS servers removed, or updated then I need to 
> contact network solutions to do this.  My ISP won't help past this point.
> 
> If you notice, the "Additional Section" in the output of the second dig 
> command there are 2 NS servers listed; horogw, and hydrogen.suemills.com.
> 
> Well, horogw is no longer a valid host, nor is the IP one of ours. 
> Since I can't think of anything else, seems to me that having this 
> invalid host in the list could be causing the problem.
> 
> So, how do I get this host removed from the list?  How do add a new host 
> name and IP to replace it as a backup?  Could this be causing my reverse 
> lookup problems?
> 
> Thanks in advance for reading and, hopefully responding to this posting.
> 
> John Emery
> 
> 
> 





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