I’m not sure you realize that spam authenticates at a higher rate than good mail. This isn’t a bad thing — it helps in blocking — but it means that authentication is nearly orthogonal to spam filtering in large systems.
Elizabeth > On Mar 22, 2019, at 8:10 AM, Douglas E. Foster > <[email protected]> wrote: > > Based on my frustration with observed product offerings, it feels like no one > has articulated a reference model of how spam filters should operate -- > either that, or the vendors are just ignoring such work. > > The SPF / DKIM / DMARC standards define what senders should do, but I don't > think it says much anything about what the receiving system should do to > resolve ambiguity when these features are not fully implemented by the > sender.. > > Does this group know of prior work to define such a reference model? > > Doug Foster > > > _______________________________________________ > dmarc mailing list > [email protected] > https://www.ietf.org/mailman/listinfo/dmarc
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