On 18/12/2016 09:19, Michael Richardson wrote: > > Theodore Ts'o <tytso@xxxxxxx> wrote: > > Yeah, it's the "sometimes mail gets lost" problem which is the main > > issue. So it might actually be better to have the mailing list > > software refuse to accept a mailing list posting from a domain with a > > DMARC record, and it can be bounced back to the sender immediately > > with a "sorry, try again using some e-mail address that does not have > > DMARC support". > > I really think that this is the right answer for our community. I don't. Accept the posting but also send a friendly warning seems to do less damage. > The DMARC policy is not to forward, and we should respect it. Why does DMARC, which is a broken solution, deserve that much respect? > When ARC gets standardized, we should implement it. Assuming it solves the problem, sure. But if it doesn't, the problem will get much worse. Brian