Reverse DNS problems

[Mark Andrews]

> Cheers,
> 
> I'm not entirely sure I understand your hints completely, but they did 
> lead me down the right path.  I think I've got the issue resolved.  The 
> mail host I've been having trouble sending mail to due to this reverse 
> DNS issue, is accepting mail from OUR mail host now.
> 
> I'm still battling with my ISP over whos responsibility it is to remove 
> that defunct server from the reverse list.

	It is the ISP's responsability to remove the bad NS record.

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.
;; Received 135 bytes from 205.214.45.6#53(auth1.ns.eni.net) in 278 ms

> What I don't understand is, how do I get network solutions to remove 
> this host?  I know / understand how to administer a "normal" domain, 
> i.e. suemills.com... I don't quite see from network solutions web site 
> how to administer a reverse domain.

	You are removing the host record for horogw.suemills.com.
	This has *nothing* to do with the reverse zone.  You also
	need to fix the delegation for suemills.com.  You may have
	trouble doing the first until the second has been corrected.

	Mark
 
> Thanks very much!
> 
> John
> 
> Mark Andrews wrote:
> >>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.
> > 
> > 
> > 	This is a RFC 2317 style delegation.
> > 
> > 	Rename your 171.135.206.in-addr.arpa zone to be
> > 	0-26.171.135.206.in-addr.arpa.  You may need to
> > 	fix zone contents.
> > 
> > 	Become a slave for 171.135.206.in-addr.arpa.
> >  
> > 
> >>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.
> > 
> > 
> > 	You need to get the host record removed.  You need to
> > 	contact your registrar, Network Solutions, to do this.
> > 
> > horogw.suemills.com.    172800  IN      A       64.218.226.140
> > suemills.com.           172800  IN      NS      horogw.suemills.com.
> > suemills.com.           172800  IN      NS      hydrogen.suemills.com.
> > ;; Received 122 bytes from 192.5.6.30#53(A.GTLD-SERVERS.NET) in 243 ms
> > 
> > 
> > 
> >>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
> > 
> 
--
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: Mark_Andrews at isc.org