Am 2013-04-23 14:22, schrieb Wietse Venema:
> Apr 22 14:20:08 dedi postfix/smtpd[2974]: smtp_get: timeout
> Apr 22 14:20:08 dedi postfix/smtpd[2974]: >
> dedi.ludosoft.org[127.0.0.1]: 421 4.4.2 dedi.ludosoft.org Error:
> timeout exceeded
> Apr 22 14:20:08 dedi postfix/smtpd[2974]: match_hostname:
> dedi.ludosoft.org ~? 127.0.0.0/8
> Apr 22 14:20:08 dedi postfix/smtpd[2974]: match_hostaddr:
127.0.0.1
> ~? 127.0.0.0/8
> Apr 22 14:20:08 dedi postfix/smtpd[2974]: timeout after
> END-OF-MESSAGE from dedi.ludosoft.org[127.0.0.1]
> Apr 22 14:20:08 dedi postfix/smtpd[2974]: disconnect from
> dedi.ludosoft.org[127.0.0.1]
After sending END-OF-MESSAGE, the Postfix smtpd_proxy_CLIENT closes
the SMTP connection to the before-queue content filter.
And this is exactly the problem: smtpd_proxy_CLIENT closes the
connection without sending
the QUIT command first, which is in violation of RFC 5321, section
"4.1.1.10. QUIT (QUIT)"
We see the same behavior here with pre-queue amavisd:
Apr 23 22:01:21 lxmhs57 amavis[32118]: (32118-01) ESMTP> 554 5.7.0
Reject, id=32118-01 - spam
Apr 23 22:01:21 lxmhs57 postfix-mwnin/smtpd[32156]: <
[127.0.0.1]:10001: 554 5.7.0 Reject, id=32118-01 - spam
Apr 23 22:01:21 lxmhs57 postfix-mwnin/smtpd[32156]: > unknown
[95.58.34.47]: 554 5.7.0 Reject, id=32118-01 - spam
Apr 23 22:01:21 lxmhs57 postfix-mwnin/smtpd[32156]: proxy-reject:
END-OF-MESSAGE: 554 5.7.0 Reject, id=32118-01 - spam; from=<SPAMMER>
to=<CUSTOMER> proto=ESMTP helo=<bla>
Apr 23 22:01:21 lxmhs57 amavis[32118]: (32118-01) smtp readline: EOF
Apr 23 22:01:21 lxmhs57 amavis[32118]: (32118-01) SMTP session over,
timer stopped
Apr 23 22:01:21 lxmhs57 amavis[32118]: (32118-01) ESMTP: notice: client
broke the connection without a QUIT ()
Apparently the content filter is waiting for QUIT *after* the
connection is closed. Please file a bug report for the content
filter.
Wietse
Wietse, this was a bug report for Postfix! Filing a bug report for the
content filter because it does not check for a dropped connection is
another story.
Michael
