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> On 30 Aug 2023, at 03:38, Grant Taylor > <gtaylor=40tnetconsulting....@dmarc.ietf.org> wrote: > > On 8/29/23 3:15 PM, Steve Atkins wrote: >> Any attempt by senders to filter outbound emails based solely on content is >> going to have a lot of false negatives and positives, wherever you decide to >> draw the line. > > I find the idea of using different, probably less stringent, filtering on > outbound than on inbound to be hypocritical. You have much more data for inbound email, and access to a much wider range of reactions. That’s not “hypocritical”. The only information a sender has that a receiver doesn’t is a broader view of who the recipients of messages being sent are - and that’s exactly the information that DKIM replay hides from the sender. > > I find it tantamount to someone saying they only accept the most pristine > message while sending less pristine, and sometimes really tarnished, email. > > Sure, there are some differences, e.g. lack of user preferences. > > Why the asymmetry? > > Why not apply the same filtering for outbound messages as applied to inbound > messages? Because they’re quite different environments. > >> Inbound content-based filtering is much easier to get right - not least >> because the fallback is “just deliver it to the spam folder” - and we’re not >> great at that. > > I guess I'm coming from a different place. I always was more worried about > what I send and not upsetting the rest of the Internet than I am about what I > accept in. That’s not the issue. It’s much easier to filter inbound mail accurately than it is outbound mail. And we’re not great at filtering inbound mail. Cheers, Steve _______________________________________________ Ietf-dkim mailing list Ietf-dkim@ietf.org https://www.ietf.org/mailman/listinfo/ietf-dkim
