Sorry guys,

in my post I left out the ASSP details: It's 2.6.6 build 21168 running on
Debian with Perl 5.28

 

Von: Dirk Kulmsee <d.kulm...@netgroup.de> 
Gesendet: Montag, 28. Juni 2021 12:28
An: 'ASSP development mailing list' <assp-test@lists.sourceforge.net>
Betreff: [Assp-test] Mail wrongly scored for dialup IP

 

Hi all,

I'm seeing an annoying problem with maybe only one mail server:

the client sits on a dynamic dialup IP and sends a message through a
mailserver via authenticated smtp. When ASSP receives this message, it
scores it for DNSBL. Of course that dialup IP is listed in Spamhaus' PBL.

 

Question: why does ASSP score for the dynamic sender IP, when the mail is
"legalized" by authenticating to the mail server? Is it ASSP's mistake or is
it the mailserver in the middle (Postfix), which maybe should provide yet
another header line?

 

Excerpt from the mail headers (slightly anonymized):

Received: from MEDISTAR (p2e51313d.dip0.t-ipconnect.de
[46.81.49.61])(Authenticated

               sender: ser...@sender.de)by <mailto:ser...@sender.de)by>
mx01.netgroup.de (Postfix) with ESMTPSA

               id BC6202400DBfor <al...@recipient.de
<mailto:al...@recipient.de> >; Sun, 27 Jun 2021 22:00:13 +0200

               (CEST)

 

Excerpt from ASSP log:

Jun 27 22:00:15 localhost assp.pl[23547]: m1-24014-10318 [Worker_1] [TLS-in]
81.209.171.97 [OIP: 46.81.49.61] <ser...@server.de <mailto:ser...@server.de>
> to: al...@recipient.de <mailto:al...@recipient.de>  Message-Score: added
50 for DNSBL: failed, 46.81.49.61 listed in zen.spamhaus.org, total score
for this message is now 50

 

Thanks for thinking

Regards

Dirk

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