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

[Lev Serebryakov]

On 09.02.2022 16:33, Aki Tuomi wrote:

  I'm participating in ~20 mailing lists and only this one gives a storm of DMARC reports on each my posting.

  Problem is, I need to unpack each of them to be sure, that these are false positives and I'm afraid, that it could lower reputation of my mail server IP address with major providers (like Google Mail).

> 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-----
>> Från: dovecot-bounces at dovecot.org <dovecot-bounces at dovecot.org> För Lev Serebryakov
>> Skickat: den 4 februari 2022 21:58
>> Till: dovecot at dovecot.org
>> Ämne: 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


-- 
// Black Lion AKA Lev Serebryakov