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?

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.

-Jim

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