[TUHS] Excessive bouncing ... argh!

Tom Ivar Helbekkmo tih at hamartun.priv.no
Sat Sep 23 17:50:51 AEST 2017

Warren Toomey <wkt at tuhs.org> writes:

> I have installed the script that strips DKIM and ARC header lines before
> the list software processes the inbound e-mails. We will see if that helps.

That's an interesting solution.  Configuring it to not modify the
Subject: line by adding "[TUHS] " to it would probably also work.  :)

Also, it seems from my logs that every list item that's been refused at
my end over the last couple of weeks has been from someone in the domain
"tnetconsulting.net".  It might be interesting to see what's special
about mail from that subscriber.

A random sample:

/var/log/maillog.7.gz:Sep 15 00:27:18 barsoom postfix/smtpd[27728]: CBD5F1C716F: client=minnie.tuhs.org[]
/var/log/maillog.7.gz:Sep 15 00:27:19 barsoom postfix/cleanup[26726]: CBD5F1C716F: message-id=<1c311c3e-6ba6-4f5c-267e-1529e1799045 at tnetconsulting.net>
/var/log/maillog.7.gz:Sep 15 00:27:19 barsoom opendkim[192]: CBD5F1C716F: bad signature data
/var/log/maillog.7.gz:Sep 15 00:27:20 barsoom opendmarc[489]: CBD5F1C716F: tnetconsulting.net fail
/var/log/maillog.7.gz:Sep 15 00:27:20 barsoom postfix/cleanup[26726]: CBD5F1C716F: milter-reject: END-OF-MESSAGE from minnie.tuhs.org[]: 5.7.1 rejected by DMARC policy for tnetconsulting.net; from=<tuhs-bounces at minnie.tuhs.org> to=<tih at hamartun.priv.no> proto=ESMTP helo=<minnie.tuhs.org>

Most people who graduate with CS degrees don't understand the significance
of Lisp.  Lisp is the most important idea in computer science.  --Alan Kay

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