From: Merijn van den Kroonenberg <mer...@web2all.nl>
    
>> On 05.05.17 11:37, Merijn van den Kroonenberg wrote:
>>>I want to test in SA if the Envelope From domain is DKIM_VALID.
>>
>> the envelope from can't be DKIM-VALID. DKIM validated message content,
>> including some of its headers, not envelope from address.

>I know. I do not want to validate the envelope from with DKIM. I just want
>to know if the mail was DKIM-VALID signed by the DOMAIN used in the
>envelopefrom.

>So the only thing I want with the envelop from is to extract the domain
>and test if the mail was DKIM signed (and valid) by that domain.

>This tells me the envelope from is not some random spoofed address, but
>actually controlled by someone who handled the e-mail before it arrived at
>our mta.

This actually would be a very useful rule/logic to add to SA:
https://blog.returnpath.com/why-passing-and-aligning-both-spf-and-dkim-is-key-to-email-deliverability/

When both align, it should be a very good candidate for whitelist_auth
based on the sender domain reputation.

Dave

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