Mailing lists which don't break DKIM are the exception, not the norm. For better or worse, users expect their mailing lists to add subject prefixes and footers.
Rejecting messages with broken DKIM is explicitly against the DKIM RFC. https://tools.ietf.org/html/rfc6376#section-6.1 > "Survivability of signatures after transit is not guaranteed, and > signatures can fail to verify through no fault of the Signer. Therefore, a > Verifier SHOULD NOT treat a message that has one or more bad signatures and > no good signatures differently from a message with no signature at all." Brandon On Fri, Feb 7, 2020 at 3:05 PM Aragon Gouveia via mailop <mailop@mailop.org> wrote: > Hello, > > Does anyone know why this list breaks DKIM verification? In particular > it looks like it's altering From, Reply-To, and Cc headers, and failing > to perform any kind of resigning too. > > I'm new here. I run a small mail system with users who subscribe to > this list, and they're complaining about not receiving posts. At a > glance this list's (mis)configuration seems very surprising considering > the subject matter here. Can anyone fix this? > > > Regards, > Aragon > > _______________________________________________ > mailop mailing list > mailop@mailop.org > https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop >
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