Amavis and OpenDMARC

[Noel Butler]

On 11/11/2023 05:04, Damian wrote:

>> OpenDMARC is setup as a smtpd_milter in Postfix.
> 
> So Amavis is setup as an smtpd_milter as well?
> 
>> Can someone maybe shed some light on why this would be happening or is 
>> there a different way to handle DMARC?
> 
> Do you see DKIM-related Authentication-Results headers in incoming 
> mails?

I'm betting its dkim_minimum_key_bits set to 2048 (great - except some 
who setup DKIM 10 years ago haven't redone keys are probably still 
scarily using 1024 bit keys, I recall reading a post once that said 
those keys would soon be considered a fail.

Also, since they allude to "some passing", I guess they did remember to 
set enable_dkim_verification=1 ? since from memory that explicitly must 
be set to 0 for opendkim.

The OP needs to do more testing of such things and if still stumped 
report back here,  it's very overcast here today, so my ESP link can't 
connect ;)

-- 
Regards,
Noel Butler

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