Re: Wrong DNS configuration. Which?
On Wed, Feb 28, 2001 at 10:14:05PM -0800, Jamie Heilman wrote:
> Romanenko M.A. wrote:
>
> > Am I right, that sendmail's check_mail rejects connection because there
> > are no A-record for tgngu.tyumen.ru in other side DNS configuration?
>
> Yes, now if you believe this is a desirable configuration or not is another
> matter, but that is probably what is happening. It might be spam, it might
> be a misconfiguration on their end.
It's seem there is a misconfiguration on the other side:
ducrot@poup:~$ dig tgngu.tyumen.ru mx
; <<>> DiG 8.2 <<>> tgngu.tyumen.ru mx
;; res options: init recurs defnam dnsrch
;; got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 4
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 1, ADDITIONAL: 3
;; QUERY SECTION:
;; tgngu.tyumen.ru, type = MX, class = IN
;; ANSWER SECTION:
tgngu.tyumen.ru. 10h13m7s IN MX 10 mail.tgngu.tyumen.ru.
tgngu.tyumen.ru. 10h13m7s IN MX 20 mail.tyumen.ru.
;; AUTHORITY SECTION:
tgngu.tyumen.ru. 1D IN NS pride.tgngu.tyumen.ru.
;; ADDITIONAL SECTION:
mail.tyumen.ru. 1D IN A 194.67.48.7
mail.tyumen.ru. 1D IN A 213.24.146.7
pride.tgngu.tyumen.ru. 1D IN A 194.67.48.65
;; Total query time: 3875 msec
;; FROM: poup.poupinou.org to SERVER: default -- 127.0.0.1
;; WHEN: Thu Mar 1 09:51:20 2001
;; MSG SIZE sent: 33 rcvd: 143
Thus, the "main" priority for the mx is mail.tgngu.tyumen.ru.
But:
ducrot@poup:~$ nslookup mail.tgngu.tyumen.ru
Server: localhost.localdomain
Address: 127.0.0.1
Non-authoritative answer:
Name: server.tgngu.tyumen.ru
Address: 194.67.48.89
Aliases: mail.tgngu.tyumen.ru
and also their mailer is a cname to server.tgngu.tyumen.ru.
You can check anywhere that this is a bad thing. (see rfc 821,
sec. 3.7 for example).
--
Ducrot Bruno
http://www.poupinou.org Page profaissionelle
http://toto.tu-me-saoules.com Haume page
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