On Wed, Apr 5, 2023 at 5:41 PM Jim Fenton <fen...@bluepopcorn.net> wrote:
> On 1 Apr 2023, at 8:25, Dotzero wrote: > > > Hmm, let's apply this to DMARC. > > > > " But it interoperates just fine once you make the effort." > > > > Nobody forces a Sender to publish a DMARC record. Nobody forces a > receiver > > to validate DMARC. Nobody forces mailing lists to accept mail from > domains > > which publish a DMARC record let alone one which publishes p=reject > > policy. But it interoperates just fine once you make the effort. > > Doesn’t this again assume that all DMARC breakage is due to mailing lists? > Not at all. The discussion (and specific post I was responding to) was about mailing lists but it also applies more generally. A number of years ago I saw bounces from a Polish domain. Their policy was that if the From and the Mail From didn't match they would reject the inbound email. I find that absurdly limiting but they can implement whatever policy they want. Maybe there are sending domains that do that for all their mail. My point is that domain owners/admins, at least on certain levels, get to choose how they interact with other networks/servers. > > This got me to musing: What if IETF decided to remove its From address > rewriting and started bouncing all incoming mail to its mailing lists from > domains that have a p=reject (and maybe p=quarantine) policy? I don’t think > it would be pretty. > I also don't think it would be pretty but it's within the realm of options they can choose from. Michael Hammer
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