In article <9D950D21-7324-469E-A809-8946B77824F1@xxxxxxxxxxxx> you write: >Of course. And yet, I may want to reply to a saved message years >later. How may years of reverse forwarding is the ietf.org mail >service signing up for? Probably not many. It's a kludge, remember. I can also report that if you don't need to allow bulk mail when you forward, it's a lot easier to do reliable filtering. You can, for example, enforce DMARC policies with a near-zero error rate. R's, John