>The most attractive mail lists for me are ones that always modify >messages, ... >I believe that this does not invalid the origin DKIM signature, ... It most certainly does. If people want to argue about DKIM and DMARC, could we at least spend a few minutes reading the specs so we get our basic facts straight? Here's a reading list: RFC 5585 - DKIM service overview RFC 6376 - DKIM spec RFC 6377 - DKIM andm mailing lists RCC 7489 - DMARC R's, John