Today we sent out some mails which were rejected, due to our use of
postscreen. From my queue:
3T26TK1xBDz1tSG 49541 Mon Dec 12 15:47:33 aktion-sauberehae...@charite.de
(host mail.klinikum-bayreuth.de[212.185.206.162] said: 450 4.1.7
<aktion-sauberehae...@charite.de>: Sender address rejected: unverified
address: host mail2.charite.de[141.42.206.200] said: 450-4.3.2 Service
currently unavailable (in reply to RCPT TO command))
recipi...@klinikum-bayreuth.de
So, mail.klinikum-bayreuth.de is using Postfix:
% telnet mail.klinikum-bayreuth.de 25
Trying 212.185.206.162...
Connected to mail.klinikum-bayreuth.de.
Escape character is '^]'.
220 mail.klinikum-bayreuth.de ESMTP Postfix
EHLO foo
250-mail.klinikum-bayreuth.de
250-PIPELINING
250-SIZE 20480000
250-VRFY
250-ETRN
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 DSN
QUIT
221 2.0.0 Bye
Connection closed by foreign host.
and it seems they're also using sender address verification:
Dec 12 15:47:22 mail postfix/postscreen[1859]: CONNECT from
[212.185.206.162]:24483 to [141.42.202.200]:25
Dec 12 15:47:27 mail postfix/smtp[5563]: 3T26T20ZNYzFvnb: host
mail.klinikum-bayreuth.de[212.185.206.162] said: 450 4.1.7
<aktion-sauberehae...@charite.de>: Sender address rejected: unverified address:
Address verification in progress (in reply to RCPT TO command)
And the address verification probe meets our postscreen:
Dec 12 15:47:28 mail postfix/postscreen[1859]: NOQUEUE: reject: RCPT from
[212.185.206.162]:24483: 450 4.3.2 Service currently unavailable;
from=<postmas...@klinikum-bayreuth.de>, to=<aktion-sauberehae...@charite.de>,
proto=ESMTP, helo=<mail.klinikum-bayreuth.de>
But: Why does their Postfix cache this tempfail for so long? Which
class (positive? negative?) does apply?
# fgrep 3T26TK1xBDz1tSG /var/log/mail.log
Dec 12 15:47:33 mail2 postfix/smtpd[14743]: 3T26TK1xBDz1tSG:
client=mail.charite.de[141.42.202.200]
Dec 12 15:47:33 mail2 postfix/cleanup[14841]: 3T26TK1xBDz1tSG:
message-id=<73bb6a4a2e05a7e82db17ab90018a...@charite.de>
Dec 12 15:47:33 mail2 postfix/qmgr[11916]: 3T26TK1xBDz1tSG:
from=<aktion-sauberehae...@charite.de>, size=49541, nrcpt=1 (queue active)
Dec 12 15:47:37 mail2 postfix/smtp[12693]: 3T26TK1xBDz1tSG:
to=<recipi...@klinikum-bayreuth.de>,
relay=mail.klinikum-bayreuth.de[212.185.206.162]:25, delay=4.3,
delays=0.04/0/0.91/3.3, dsn=4.1.7, status=deferred (host
mail.klinikum-bayreuth.de[212.185.206.162] said: 450 4.1.7
<aktion-sauberehae...@charite.de>: Sender address rejected: unverified
address: host mail2.charite.de[141.42.206.200] said: 450-4.3.2 Service
currently unavailable 450 4.3.2 Contact postmas...@charite.de (using a
different email address!) for technical assistance. Please provide the
following information in your problem report: (in reply to RCPT TO
command))
Dec 12 15:55:08 mail2 postfix/qmgr[11916]: 3T26TK1xBDz1tSG:
from=<aktion-sauberehae...@charite.de>, size=49541, nrcpt=1 (queue active)
Dec 12 15:55:09 mail2 postfix/smtp[16245]: 3T26TK1xBDz1tSG:
to=<recipi...@klinikum-bayreuth.de>,
relay=mail.klinikum-bayreuth.de[212.185.206.162]:25, delay=456,
delays=455/0.61/0.1/0.14, dsn=4.1.7, status=deferred (host
mail.klinikum-bayreuth.de[212.185.206.162] said: 450 4.1.7
<aktion-sauberehae...@charite.de>: Sender address rejected: unverified
address: host mail2.charite.de[141.42.206.200] said: 450-4.3.2 Service
currently unavailable 450 4.3.2 Contact postmas...@charite.de (using a
different email address!) for technical assistance. Please provide the
following information in your problem report: (in reply to RCPT TO
command))
Dec 12 16:05:10 mail2 postfix/qmgr[17153]: 3T26TK1xBDz1tSG:
from=<aktion-sauberehae...@charite.de>, size=49541, nrcpt=1 (queue active)
Dec 12 16:05:10 mail2 postfix/smtp[19078]: 3T26TK1xBDz1tSG:
to=<recipi...@klinikum-bayreuth.de>,
relay=mail.klinikum-bayreuth.de[212.185.206.162]:25, delay=1057,
delays=1057/0.08/0.11/0.36, dsn=4.1.7, status=deferred (host
mail.klinikum-bayreuth.de[212.185.206.162] said: 450 4.1.7
<aktion-sauberehae...@charite.de>: Sender address rejected: unverified address:
host mail2.charite.de[141.42.206.200] said: 450-4.3.2 Service currently
unavailable 450 4.3.2 Contact postmas...@charite.de (using a
different email address!) for technical assistance. Please provide the
following information in your problem report: (in reply to RCPT TO command))
Dec 12 16:25:10 mail2 postfix/qmgr[17153]: 3T26TK1xBDz1tSG:
from=<aktion-sauberehae...@charite.de>, size=49541, nrcpt=1 (queue active)
Dec 12 16:25:12 mail2 postfix/smtp[22408]: 3T26TK1xBDz1tSG:
to=<recipi...@klinikum-bayreuth.de>,
relay=mail.klinikum-bayreuth.de[212.185.206.162]:25, delay=2259,
delays=2257/0/1.9/0.54, dsn=4.1.7, status=deferred (host
mail.klinikum-bayreuth.de[212.185.206.162] said: 450 4.1.7
<aktion-sauberehae...@charite.de>: Sender address rejected: unverified
address: host mail2.charite.de[141.42.206.200] said: 450-4.3.2 Service
currently unavailable 450 4.3.2 Contact postmas...@charite.de (using a
different email address!) for technical assistance. Please provide the
following information in your problem report: (in reply to RCPT TO
command))
--
Ralf Hildebrandt
Geschäftsbereich IT | Abteilung Netzwerk
Charité - Universitätsmedizin Berlin
Campus Benjamin Franklin
Hindenburgdamm 30 | D-12203 Berlin
Tel. +49 30 450 570 155 | Fax: +49 30 450 570 962
ralf.hildebra...@charite.de | http://www.charite.de
