Reverse DNS problems

[Mark Andrews]

> 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.

	You are *wrong*.  Go read RFC 2317 to understand what is
	being done here.

> 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.

	Again you are wrong.
 
> 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
> > 
> > 
> > 
> 
> 
> 
> 
--
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: Mark_Andrews at isc.org