Hey guys,

On 21.06.21 21:35, Serge Droz wrote:
> Hi all
> 
> It seems there is a SWINOG member who should clean his computer.
> 
> Happy hunting
> Serge

I don't think so. Root problem is the SWINOG mailman archive which happens to 
be very open:

http://lists.swinog.ch/public/swinog/2021-June/thread.html
http://lists.swinog.ch/public/swinog/2021-June/007518.html

Even for a stupid crawler it is quite easy to collect your email address from 
there.

That's the reason why I don't like to post to this list: it automatically makes 
me a
future victim of SWINOG external SPAM. I once posted something to this list 
(must be
10 years ago). It took less than a week for the first SPAM mails to arrive.

In fact, anyone who ever posted to this list is subject to direct spam.

SWINOG should really re-think its list archive...

On 22.06.21 08:58, Jeroen Massar wrote:
> I suggest using a mailhost that has proper spam filtering, considering it is 
> trivial to identify
> that the sending host is not properly configured, why bother accepting mail 
> from it?

That's not enough. In first place, the SWINOG contributors should be protected 
from being crawled.
-> SWINOG homework

On 21.06.21 23:42, Jeroen Massar wrote:
> Full headers would be rather useful to determine the real origin of that 
> message...

Full ACK. Preferrably in the correct order.

So for the sake of completeness, let's do the header dance:

> X-Authenticated-Sender: cloudserver2.webbossuk.com: in3d...@in3days.org
> X-Get-Message-Sender-Via: cloudserver2.webbossuk.com: authenticated_id: 
> in3d...@in3days.org
> Received: from cloudserver2.webbossuk.com (cloudserver2.webbossuk.com
>         [95.172.31.250]) (using TLSv1.2 with cipher 
> ECDHE-RSA-AES256-GCM-SHA384
>         (256/256 bits)) (No client certificate requested) by
>         mailin025.protonmail.ch (Postfix) with ESMTPS id 4G7yKH3NF6z9vNPW for
>         <s.d...@protonmail.ch>; Mon, 21 Jun 2021 18:11:47 +0000 (UTC)
> Received: from [136.35.59.161] (port=45371 helo=in3days.org) by
>         cloudserver2.webbossuk.com with esmtpsa (TLS1.2) tls
>         TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA (Exim 4.93) (envelope-from
>         <in3d...@in3days.org>) id 1lvNEU-00069P-CD for s.d...@protonmail.ch; 
> Mon,
>         21 Jun 2021 17:57:10 +0100

Email coming from 136-35-59-161.googlefiber.net [136.35.59.161] sent through 
cloudserver2.webbossuk.com (esmtpsa -> authenticated) which happens to host 
in3days.org.

So most probably a hacked web hosting account.

However, this does not help much, since the root cause is the SWINOG mailman 
archive. You will get spam from all over the world.

Gruass, Franco


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