> On Sep 14, 2014, at 4:45 AM, "Stephen J. Turnbull" <step...@xemacs.org> wrote: > > Scott Kitterman writes: > >> With respect to rewriting from, I think the horse has already left >> the barn. > > True. The parts of RFC 5322 describing the Reply-To field are quite > analogous, though. Reply-To munging by misguided mailing lists has > been happening since RFC 733 was current as far as I can tell, but the > obsoleting RFCs have consistently refused to sanction it. > > I suppose that From munging will get the same treatment, for the same > reasons.
I don't think so. It will be isolated. Don't assume all systems are going to honor it. They won't. It's a hack, a kludge and it's irresponsibly ugly. However, it will be exploited by the bad guys to send "on behalf" phishing DKIM exploits and that is when you will see filters to trap for these exploits. At the end of the day, all the restrictive domains usages will be pruned out, filtered away. Just like all our restrictive domains, like yahoo.com users subscribed to our support lists have shown. This will most likely occur at the vast amount of smaller systems which is by far the majority as a total group. But the same effect will occur at the more isolated larger site too. By the time the WG will figure out any complex solution to get around this, I suspect the depleting targets user base will have moved on. Why would you keep using a domain that you can no longer use in public like in the past? A user might use it at a site because it is rewriting but he won't be able to use it at other sites and in not in general. -- Hector Santos http://www.santronics.com _______________________________________________ dmarc mailing list dmarc@ietf.org https://www.ietf.org/mailman/listinfo/dmarc
