>By that argument, there's no excuse for the big mailer providers for >bouncing List mail because of DMARC. They could just reference the >List-ID field, and display something like this: > > <From> via mailing list <list-id header contents> Great idea. Because there is no possibility whatsoever that if mail systems did that, bad guys would put in fake List-IDs to get their phishes delivered. R's, John