> > As an end user, this would be about useless ... at least w/o a much > smarter client than I'm used to. Well, of course, part of the intention behind creating a uniform DSN format was to facilitate smarter mail user agents. Your MUA should be able to intercept DSNs (and MDNs) that it receives and use that information to report the status of each message that you've sent - or at least, the ones for which you've received nondelivery reports. I could speculate about why we don't have such capability, but it would be just speculation. Keith _______________________________________________ Ietf@xxxxxxxx https://www1.ietf.org/mailman/listinfo/ietf