> >I hope some solution to this problem with mailing lists is found. > > On further consideration, there are some straightforward fixes that > puts the work where it belongs and avoids causing damage to third > parties; > > a) Implement p=reject by discarding mail rather than SMTP rejects. That's > what we did in ADSP. You still run the risk of losing mail your users > want, > but that's between you and them, and it's inherent in any scheme like this. >
I think this is a good idea, but it does open the door for even more ambiguity in how receivers implement DMARC. Perhaps it would make sense for a subsequent revision of the DMARC spec to include a policy of 'drop' in addition to the existing 'reject' policy. -- Mason
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