On 19/12/2016 11:08, John Levine wrote:
>> Send them a canned message stating that the only solution available
>> to them is changing to a different From address that does not have
>> this issue. What else can they do?
>
> Conclude that the IETF has jumped the shark* and go do something else.
The question was what can a mailman list admin do. I don't see another answer,
except setting the 'anonymous list' mode ("Hide the sender of a message, replacing
it with the list address (Removes From, Sender and Reply-To fields").
> As I keep asking, how much blood are we prepared to lose here?
Not that much.
Brian