J. Gomez writes: > What costs are Mediators currently taking to improve > validation/authentication of the email system as a whole?
Isn't it obvious that Mediators bear all of the burden that *both* ends do? Of course, we perform both roles on each message. We verify signatures and filter messages on the way in, which potentially could reduce costs system-wide due to the multiplier effect of mailing lists (except of course nobody trusts us to do it well). We sign the version of the message that we send out. (These are functions of the MTA, of course, and we can't do a better or worse job than any Originator or Recipient. Except that to some extent Mediators may have information about the Originator that Recipient systems don't, which may improve filtering.) What else do you propose that we do? GNU Mailman has been working (desultorily) on lists which authenticate posters via personal digital signatures, but that isn't going to help much. _______________________________________________ dmarc mailing list dmarc@ietf.org https://www.ietf.org/mailman/listinfo/dmarc
