[Mailman-Users] cause of bounces

[Grant Taylor]

On 10/17/2017 03:22 PM, Mark Sapiro wrote:
> Agreed, but the above imply NOT RFC 5322 compliant.

Please elaborate, if you're referring to more than From: vs Sent-By:.

> In other words, an invalid DKIM signature SHOULD be treated no
> differently from no signature.

Fair enough.  -  I suspect DKIM by itself can tolerate that, like you 
are referencing.

I believe the problem is when DMARC is added to the mix, particularly 
with a policy of reject.



-- 
Grant. . . .
unix || die