dovecot - Feb 2022 - Sv: dovecot mailing list (this mailing list), DKIM, SPF and DMARC

I get it too. These appear because they don't replace either MAIL FROM: or
Mime From: with the list address. This causes validations to fail since the
mailing list is trying to spoof mail in your name, and of course, anti-spoofing
security is going to react. DKIM can be troublesome since mailing lists
sometimes change or reencode content so DKIM signature fails.

-----Ursprungligt meddelande-----
Fr?n: dovecot-bounces at dovecot.org <dovecot-bounces at dovecot.org> F?r
Lev Serebryakov
Skickat: den 4 februari 2022 21:58
Till: dovecot at dovecot.org
?mne: dovecot mailing list (this mailing list), DKIM, SPF and DMARC


  My domain (serebrtyajov.spb.ru) has all these "new" e-mail
technologies configured. It works fine till I write to this mailing list.

  After that I've got several DMARC reports about "spam" from my
domain. All these reports are about my mailing list post.

  I don't have such problems with other mailing lists (FreeBSD ones, OpenJDK
ones, and others).

  Looks like mailing list software for this mailing list is misconfigured.

  I'm sure, I'll get new after this message.

-- 
// Black Lion AKA Lev Serebryakov

We did that replacement for a while, but people complained. We have ARC signing
there, unfortunately it only works if you trust it.

Aki
> On 04/02/2022 23:10 Sebastian Nielsen <sebastian at sebbe.eu> wrote:
> 
>  
> I get it too. These appear because they don't replace either MAIL FROM:
or Mime From: with the list address. This causes validations to fail since the
mailing list is trying to spoof mail in your name, and of course, anti-spoofing
security is going to react. DKIM can be troublesome since mailing lists
sometimes change or reencode content so DKIM signature fails.
> 
> -----Ursprungligt meddelande-----
> Fr?n: dovecot-bounces at dovecot.org <dovecot-bounces at dovecot.org>
F?r Lev Serebryakov
> Skickat: den 4 februari 2022 21:58
> Till: dovecot at dovecot.org
> ?mne: dovecot mailing list (this mailing list), DKIM, SPF and DMARC
> 
> 
>   My domain (serebrtyajov.spb.ru) has all these "new" e-mail
technologies configured. It works fine till I write to this mailing list.
> 
>   After that I've got several DMARC reports about "spam" from
my domain. All these reports are about my mailing list post.
> 
>   I don't have such problems with other mailing lists (FreeBSD ones,
OpenJDK ones, and others).
> 
>   Looks like mailing list software for this mailing list is misconfigured.
> 
>   I'm sure, I'll get new after this message.
> 
> -- 
> // Black Lion AKA Lev Serebryakov