Dovecot mailing list and DKIM

[Aki Tuomi]

> On 20/06/2021 00:58 A. Schulze <sca at andreasschulze.de> wrote:
> 
>  
> Am 19.06.21 um 16:21 schrieb Kevin N.:
> > Going through my mail logs I noticed that a couple of messages from the Dovecot mailing list failed DKIM validation.
> > 
> > For example, this one has failed: https://markmail.org/message/te7tycmpiutw4kia
> 
> dovecot.org use mailman-2.1.15 which is "a little bit (~9 years)" behind latest 2.1.34
> Older version of mailman are know to modify some messages which break DKIM.
> 
> That may be the reason for your observation.
> 
> BTW:
> the ARC-Seal added by dovecot.org is invalid here, too
> 
> Andreas

Can you give any more insight on why it's invalid? Last time I checked the ARC-Seal was fine.

Aki