Hi Warren,
I haven't kept up with all messages, but are you aware of the
https://minnie.tuhs.org/cgi-bin/mailman/admin/tuhs/?VARHELP=general/from_is…
option, the dmarc_moderation_action it mentions, and how they interact?
IIRC, Mailman can check if the sender's domain is troublesome and only
re-write the From header to itself in those cases, leaving the rest of
our emails alone.
--
Cheers, Ralph.
https://plus.google.com/+RalphCorderoy