sender verification on lowest MX?

19 msg	postmap can't always find keys
3 msg	deliver mail to different servers but in same d...
4 msg	corrupted queue

sender verification on lowest MX?
\ martin f krafft (26 Nov 2007)
. \ Noel Jones (26 Nov 2007)
. . \ martin f krafft (26 Nov 2007)
. . . \ Noel Jones (26 Nov 2007)
. . . . \ martin f krafft (26 Nov 2007)
. . . . . \ Noel Jones (26 Nov 2007)

4 msg	Disable reject_unknown_sender_domain for certai...
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4 msg	4xx code is returned when next hop gives 5xx
2 msg	domain alias and recipient check
2 msg	postfix delivering to a cyrus-mupdate setup
3 msg	Outbound support for confirmations
2 msg	Basic distribution list query?
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4 msg	Literal IP helo
2 msg	Header fields inserted by a milter glued with t...
7 msg	Policy daemon - return multiples recipients
2 msg	restrict mass mail

Subject:	sender verification on lowest MX?
Group:	Postfix-users
From:	martin f krafft
Date:	26 Nov 2007

Hi list, can someone please tell me why postfix insists on asking
bl-ckh-le.kernel.org for verification of the sender (which I should
not be doing, I know; I turned it off already, but am still
curious), given how it's the lowest prio MX?

postfix/smtpd[22959]: NOQUEUE: reject: RCPT from
vger.kernel.org[209.132.176.167]: 450 4.1.7
<linux-kernel-owner+linux-kernel=3Dvger.kernel.org=40mass.madduck.net-S175819 0AbXKZRFn>:
Sender address rejected: unverified address: connect to
bl-ckh-le.kernel.org[130.239.17.29]: Connection timed out;
from=<linux-kernel-owner+linux-kernel=3Dvger.kernel.org=40mass.madduck.net-S1 758190AbXKZRFn>
to=<linux-kernel=vger.kernel.org> proto=ESMTP
helo=<vger.kernel.org>

piper:~> dig kernel.org mx +short #[303]
20 zeus1.kernel.org.
30 zeus2.kernel.org.
999 bl-ckh-le.kernel.org.
10 hera.kernel.org.

There is no special address_verify_relayhost routing in place.
Regular mails to kernel.org go directly to hera.kernel.org.

--
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