Hello managers,
from time to time I detect a situation with sendmail which I cannot explain.
It happens sometimes when my host functions as a mail exchanger. While the
recipient host (and sendmail on it) is running OK, to my host (as MX) comes
a mail which cannot be delivered to recipient. The matter is a fault in
resolving the sender address. I make sure that resolving fails at both
hosts, nevertheless it gets to mine while is rejected with the recipient.
Besides, I suppose that trying to send the message to my host is done after
the failure in sending one directly because both have MX records and the
preference numbers are appropriate.
In q-file in mqueue:
Mhost map: lookup (1mallonline.com): deferred
In x-file:
451 <webmaster_at_1mallonline.com>... 1mallonline.com: Name server timeout
Having run nslookup by hand I make sure - the sender address is unresolvable:
*** alpha.iae.nsk.su can't find 1mallonline.com: Server failed
My questions:
------------
- HOW does the message GET to my -mail exchanger- host? Why doesn't sendmail
on MY host reject receiving such a message?
- Is any miss in sendmail configuration on my or recipient hosts possible?
Following is a fragment of mail.log file.
Thanks,
Irene
----------------------------------->%-------------------------------------
Jun 21 09:41:43 alpha sendmail[2961]: JAA02961: from=<webmaster_at_1mallonline.com>
, size=12817, class=0, pri=42817, nrcpts=1, msgid=<199806201907.EAA23498_at_cnnic.n
et.cn>, proto=SMTP, relay=nm.cnnic.net.cn [159.226.1.8]
Jun 21 09:51:43 alpha sendmail[3018]: JAA02961: timeout waiting for input from i
ae.nsk.su. during client MAIL
Jun 21 10:01:43 alpha sendmail[3018]: JAA02961: timeout waiting for input from i
aebox.iae.nsk.su. during client MAIL
Jun 21 10:01:43 alpha sendmail[3018]: JAA02961: to=<vad_at_iae.nsk.su>, delay=00:21
:38, xdelay=00:20:00, mailer=esmtp, relay=iaebox.iae.nsk.su. [193.124.169.49], s
tat=Deferred: Connection reset by iaebox.iae.nsk.su.
Jun 21 10:13:26 alpha sendmail[3282]: JAA02961: timeout waiting for input from i
ae.nsk.su. during client MAIL
Jun 21 10:23:26 alpha sendmail[3282]: JAA02961: timeout waiting for input from i
aebox.iae.nsk.su. during client MAIL
Jun 21 10:23:26 alpha sendmail[3282]: JAA02961: to=<vad_at_iae.nsk.su>, delay=00:43
:21, xdelay=00:20:09, mailer=esmtp, relay=iaebox.iae.nsk.su. [193.124.169.49], s
tat=Deferred: Connection reset by iaebox.iae.nsk.su.
.
.
.
------------------------------------>%----------------------------------------
Received on Mon Jun 22 1998 - 13:07:35 NZST