David Phillips said: > Bob Tanner writes: >> More or less this tries to verify the sender's address. > > Why would you want to do this? This merely encourages spammers to forge > real addresses when sending spam, which causes harm to innocent users. > Or, alternatively, they will start spamming with a null envelope sender > (I'm surprised more spammers don't do this). Note that some mail > servers will verify any address for a domain, even if it doesn't exist. > qmail does this. Becuase people often try to send out mail with an errant "From:" setup in thier mailer and when other folks try to reply it gets bounced. But it can't bounce because it's an invalid address... > > This isn't a good solution for spam. It is easy to circumvent. In > fact, many spammers already do. When you keep creating bogus > "solutions" for spam, you make the solution worse than the problem: it's not a solution for spam, it's prevention against your users having to deal with broken addresses and misconfigured MUAs. And yes many spams will get stopped by it. > > http://cr.yp.to/qmail/antispam.html blah blah blah djb is the greatest blah blah blah. If i never see another cr.yp.to link from you on this list it will be too soon. PLONK! -- Ben Lutgens System Administrator _______________________________________________ TCLUG Mailing List - Minneapolis/St. Paul, Minnesota http://www.mn-linux.org tclug-list at mn-linux.org https://mailman.real-time.com/mailman/listinfo/tclug-list