On Mon, Sep 15, 2008 at 02:05:54AM +0000, Vernon Schryver wrote: > > From: Gary Mills <[EMAIL PROTECTED]> > > > > As I always say, wanted bulk mail should be whitelisted. One of the many > > > Of course. The difficult part is determining which messages should be > > whitelisted. People generally don't notice that e-mail is being > > rejected until it stops arriving. We use a shared whitelist here to > > which people can nominate messages after they have been rejected. The > > advantage is that only one recipient of a legitimate bulk mail message > > need nominate it.
> I think the best tactic is to give each user a private dccm/dccifd > whiteclnt file and log directory. Users can check their private > logs and white- or blacklist as they wish, and even set thresholds, > turn DCC checks and greylisting on or off, and so forth with something > like the proof-of-concept CGI scripts demonstrated at > https://www.rhyolite.com/DCC-demo-cgi-bin/edit-whiteclnt > with username cgi-demo and password cgi-demo My impression is that most users don't want to bother with identifying and classifying spam; they just want their e-mail to work. They'd be happiest if the spam filter could make all those decisions on their behalf. Of course, that's impossible because only recipients can know if they've requested a particular message. The other end point is to have users make all of the decisions. That would be a nightmare here, as the majority of users wouldn't bother to check a web page. Some users are also not very good at recognizing spam or phishing e-mail. Our compromise is a shared whitelist, to which any recipient can contribute. This certainly isn't a perfect solution, but it is workable. > I recall being told that is not practical at U of M, but it is done > as some other sites. I suspect that the most common technique now is to combine DCC with a number of other tests, and then to deliver messages identified as spam to a spam folder. I do prefer the SMTP-level rejection that DCC does. -- -Gary Mills- -Unix Support- -U of M Academic Computing and Networking- _______________________________________________ DCC mailing list [email protected] http://www.rhyolite.com/mailman/listinfo/dcc
