Reverse DNS problems
Mark Andrews
Mark_Andrews at isc.org
Fri Mar 19 01:07:28 UTC 2004
> 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
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