Am 20.02.2011 15:27, schrieb /dev/rob0:
[...]
mean nothing. Postfix did not even log a "connect from".
This is the problem you must first understand and resolve. Perhaps
your syslog needs to be restarted? You can't just delete an active
[...]
Am 20.02.2011 15:35, schrieb Wietse Venema:
> Then your logging is broken.
>
> When smtpd logging does not show, either syslogd is not running,
> or you deleted the logfile without restarted syslogd.
Sorry i've probably not expressed it precisely enough. Postfix still
does smtpd logging. But it did not (and still doesn't) log anything from
these servers we got complaints from.
This irritated me firstly as their servers a and b still sent messages
without a problem to us (and got logged by postfix) but server c and d
did not even produce a byte of logging. But if they do not connect
correctly (or if our system does not let them connect) there is nothing
to log at all...
But when mails are coming from another server they (SYN), we
(SYN, ACK), they (ACK) and then we again (SYN, ACK) (which after
a few more (TCP Dup ACK) and (SYN, ACK) leads to a [RST, ACK]).
Likewise, this would be logged.
I do not think so. As far as i understand from this connection
http://people.ee.ethz.ch/~maegger/ieee/bad_smtp_connection.jpg
postfix does not get involved at all, as at this time only TCP Protocol
is involved.
Am 20.02.2011 15:27, schrieb /dev/rob0:
Among other options, this would work:
> http://www.postfix.org/postconf.5.html#soft_bounce
Am 20.02.2011 15:35, schrieb Wietse Venema:
> /etc/postfix/main.cf
> transport_maps = static:retry
>
> You must execute "postfix reload" after this change.
Thank you both for this!
Best regards
Matthias
--
Matthias Egger
IT Support Gruppe D-ITET (ISG.EE)
ETH Zürich, ETL F 24.1
Physikstrasse 3
8092 Zürich
+41 (0)44 632 03 90
