On May 24, 2010, at 5:27 AM, Ian Eiloart wrote: >> We have one concrete failure scenario, in which someone who publishes >> dkim=discardable sends mail to a MLM that as usual breaks the signature, >> a subscriber's mail system carefully follows the ADSP and rejects that >> mail, causing the subscriber to be bounced off the list. (This really >> happened, on an IETF list.) The advice is obvious a) put a shim in >> front of your MLM to reject discardable mail and b) the usual advice not >> to use ADSP at all, but it definitely needs publishing. > > The other piece of advice should be to actually discard, rather than > rejecting, discardable email. That would have protected the subscriber from > automatic unsubscription.
The advice should be to discard the mail vs. bouncing it back to the MLM. That solves the use case of subscribers being auto-unsubscribed to mail lists without undermining all the other use cases that led the IETF to standardize ADSP in the first place. -- Brett _______________________________________________ NOTE WELL: This list operates according to http://mipassoc.org/dkim/ietf-list-rules.html
