may I suggest we stop here for a moment and get back to the original
question, which in essence was: should a 1st signer DKIM signature be
preserved 'coûte que coûte' when a message is handled by a MLM, or not.
The answer is yes, sure, but that's the same answer I'd offer if you asked
if spammers should set the evil bit (RFC 3514) when sending their mail.
As others have noted, list software does what it does, list managers do
what they do, and the chances that they will do anything we ask drop
radically as we make more demands on them.
I think it's reasonable to encourage them to put a list signature on
outgoing mail. It'll probably help them get the list mail delivered, and
in the common case that the MLM uses some other program as its MTA, some
tweak to the MTA will likely be adequate, so they won't have to mess with
the MLM's configuration. (I speak from experience here.) Beyond that, we
can make suggestions, but we've dropped off the cliff.
R's,
John
smime.p7s
Description: S/MIME Cryptographic Signature
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