On 2021-02-04 15:54, Jaroslaw Rafa wrote:
Dnia  4.02.2021 o godz. 15:44:20 Jeff Abrahamson pisze:
     0.1 DKIM_INVALID           DKIM or DK signature exists, but is not
valid

Is this normal or a point for worry?  It did say "not spam".

I have noticed that it is common for SpamAssassin to say DKIM_INVALID for perfectly correctly DKIM signed messages. I don't know why it is so, but I
see it in SA results all the time.

what software say its valid ?

your dkim signature is

DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=rafa.eu.org; s=mail;
        t=1612450476; bh=O8f2wrKHnjqIgNmKbiWnvjxMilxPoIgUDSQZFCVc/gk=;
        h=Date:From:To:Subject:References:In-Reply-To:From;
        b=VLK6DlBhoqbsF8IFRGbcBcQaoDgLCA2LOYLFY7WMIvJELfZ8i8TWw9gTJNivpTonK
         NmxugAwZyd/2Olrn4kD2US6UQyUdtSdI5i3ndnJ15bmHis1NXvrBDFXcpF344gspvA
         8KhmrJtuj9JJQGw5Q6+FbeNmm6NJo0kK9pq1BBqU=

to get not invalid try change c=, simple is more strong then relaxed

it worked for sdlu maillists, i was blamed that spamassing says invalid for this maillist

i admit i dont know if this is really the right fix or not, but it did solve sdlu maillist

could it be that dkim singner recives 8bitmime data and signs it, where remote changes it to not be 8bitmime on nexthop, i remember amavisd setup says amavisd should disable 8bitmime if dkim signing in amavisd

As I totally do not care about DKIM and it is by no way a spam mark to me, I had no motivation to investigate it any further. Maybe someone knows more...

in that case we a in same boat

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