In article <m1cJIF7-0000DEC(_at_)stereo(_dot_)hq(_dot_)phicoh(_dot_)net> you
write:
Just a random idea, I don't think I have seen it before, but I may have missed
it.
What about adding a checkbox in the mailman profile for subscribers of the
lists that basically says: if you detect that the sender is using DMARC then
please rewrite the From header.
Whether a mail system enforces DMARC policies is up to the system's
manager, not individual users. Even in the IETF, I expect that many,
perhaps a majority, of users have only the dimmest idea what if
anything their operator does with DMARC.
R's,
John