--On 29 July 2010 18:46:34 +0200 Alessandro Vesely <ves...@tana.it> wrote:
> On 29/Jul/10 13:21, Charles Lindsey wrote: >> The REAL cause of the problem is that From: line. My proposal is that MLM >> should change the From: header in such a way that the mail appears to >> have come from MLM.example and not from discardable.example. Clearly, >> this removes the cause of the problem at a stroke (the mail will no >> longer be discarded), but obviously it raises several other issues >> instead. > > SRS on "From"? It is intriguing that, after having taken a rather > different approach, DKIM faces much the same problems that SPF had > been criticized for, for the same minor fraction of the email traffic. Actually, importantly, it's a *different* minor fraction of the email traffic. Mailing lists that break DKIM headers will almost certainly rewrite the envelope. This is important, because it means that widespread deployment of DKIM *and* SPF would mean that almost all legitimate email would either carry a good DKIM signature, or pass SPF. That means that the recipient should be able to make a judgement against either a DKIM signer reputation engine, or a return-path email address reputation engine, or an EHLO string reputation engine. I guess those reputation engines might all be the same domain keyed machine, but they could also encompass user-driven whitelists for authenticated email addresses (return paths, From addresses with domain matches, etc). -- Ian Eiloart IT Services, University of Sussex 01273-873148 x3148 For new support requests, see http://www.sussex.ac.uk/its/help/ _______________________________________________ NOTE WELL: This list operates according to http://mipassoc.org/dkim/ietf-list-rules.html