> -----Original Message----- > From: [email protected] [mailto:ietf-dkim- > [email protected]] On Behalf Of John R. Levine > Sent: Wednesday, June 02, 2010 3:26 PM > To: Brett McDowell > Cc: DKIM List > Subject: Re: [ietf-dkim] list vs contributor signatures, was Wrong > Discussion > > >> Recent experience suggests that they often don't. > > Can you name someone with ADSP experience who doesn't understand what it > means? > > Not to pick on you specifically, since there are multiple examples, but > I'd say that domains that publish dkim=discardable and who let their users > subscribe and send messages to mailing lists don't understand what their > ADSP is telling people. > > I suppose it's possible they do know and they don't care how much damage > they cause to everyone else, but I'd rather think it was confusion than > malice. > > R's, > John >
HA! Something John and I find common ground on. But whereas John's answer is that people shouldn't use ADSP (A strange position for an author of ADSP) my answer is that people need to be better educated.... or accept that they run the risk of their endusers mail getting handled in potentially suboptimal ways. It's not that people don't care, it's that this stuff (not just ADSP) is not particularly easy to understand and implement. Brett is relatively new to this space and wasn't responsible for the PayPal implementation but as soon as the maillist/enduser problem was pointed out to him he started working on addressing it. Personally, I'm not feeling quite as adventurous as to implement ADSP "DISCARDABLE" because it still isn't clear what the breakage rate on forwarding is. Publishing "ALL" isn't appealing because it leaves ambiguous what outcome a sender might expect. Do I get the gain for the pain or do I get nothing or ? Be that as it may, I'm going to point out again that the MLM issue is the tail and not the dog. From a BCP perspective it is straightforward to me: If the domain or subdomain involved has enduser (at all) accounts then it is likely a poor candidate for ADSP "DISCARDABLE". ADSP "DISCARDABLE" should be used for domains that are subject to high levels of abuse and are used primarily for transactional or marketing email and where the mail flows are strictly controlled. Mike _______________________________________________ NOTE WELL: This list operates according to http://mipassoc.org/dkim/ietf-list-rules.html
