On 21/04/2014 05:26, John C Klensin wrote:
>
> --On Sunday, 20 April, 2014 12:52 -0400 Jeffrey Altman
> <jaltman@xxxxxxxxxxxxxxxxxxxx> wrote:
>
>> ...
>> I took a different approach. I left the bounce detection on
>> but switched all @yahoo.com accounts to digest mode. Since
>> the mail now comes from the list instead of the @yahoo.com
>> sender there are no rejections. Not a perfect solution but
>> it prevents harm to non-@xxxxxxxxx list participants.
>
> IMO, this is quite elegant. The Yahoo users continue to get the
> messages, you don't get cluttered by rejection-related
> complaints, and those Yahoo users who don't like the digest form
> can take it up with Yahoo or find other accounts to use.
Unfortunately they can switch themselves back to normal mode
too. Digest mode is user-settable, and is very annoying because
it munges the Subject header. What's really needed is a DMARC-safe
mode (per subscriber) that optionally rewrites the From.
Brian