On Tuesday 09 October 2007 22:45, Keith Moore wrote: > Of course it does little good to return a DSN to someone whose mail > address was forged by a spammer. But to solve that problem without > impairing the reliability of mail delivery reporting, an MTA needs a > reliable way of knowing whether a particular return-path is correct. > (where "reliable" includes being reasonably immune to replay attacks) I'm curious how you would propose to do this? Scott K _______________________________________________ Ietf@xxxxxxxx https://www1.ietf.org/mailman/listinfo/ietf