On 7/29/2011 11:02 AM, Barry Leiba wrote:
What it does is allow you to assure yourself that the message was, indeed, from an IETF mailing list (well, from an IETF email server), and that it wasn't that someone tried to spoof that. That, in turn, allows you to confidently increase your trust that the message is not spam in proportion to your confidence in the IETF's spam-filtering capabilities. Some of us, at least, find that useful. Some of us might even completely white-list IETF-signed messages. You can make your own choice on that.
An intermediary that signs messages and has a reputation for carrying spam in its stream will have an appropriate reputation. One that signs messages and has a clean message stream will also have an appropriate reputation.
The differences between the two will produce very different disposition at the delivery site.
All of which is cleaner and safer than is possible today, except with constrained uses of previous-hop IP(v4) addresses.
d/ -- Dave Crocker Brandenburg InternetWorking bbiw.net _______________________________________________ Ietf mailing list Ietf@xxxxxxxx https://www.ietf.org/mailman/listinfo/ietf