On 06/02/2010 04:25 PM, Steve Atkins wrote: > > On Jun 2, 2010, at 4:10 PM, Michael Thomas wrote: > >> On 06/02/2010 03:47 PM, Douglas Otis wrote: >>> On 6/2/10 2:43 PM, Michael Thomas wrote: >>>> Instead of kvetching about ADSP, you might tell the list owners that their >>>> list software heuristics are broken. >>>> >>> Mailing lists are on higher ground, since they are not introducing the >>> new mechanism. >> >> When we let existing heuristics dictate what we can design on the net, then >> we have >> failed. Heuristics by their nature are then things that need to deal with >> their own >> shortcomings. The problem here is not with ADSP. It's bad assumptions made >> by heuristics. > > The "heuristic" here is that a 5xx ESMTP response means that the > recipient is rejecting email from the sender, I believe. It's not really > an obscure bit of existing practice, rather it's both "best" and "common".
No. The heuristic is "because I got a reject(s) from this subscriber delivering his list mail, I'm going to kick him". That's a heuristic. It's not working right. You could probably get the same bad outcome with a determined attacker not using ADSP at all. Mike _______________________________________________ NOTE WELL: This list operates according to http://mipassoc.org/dkim/ietf-list-rules.html
