On Wed, 2009-09-23 at 23:36 +0100, RW wrote: > On Wed, 23 Sep 2009 10:40:11 -0700 (PDT) > linuxmagic <sa...@linuxmagic.com> wrote: >
> Incidently the point about backscatter is wrong. The traditional > approach of classifying, and then discarding or filing to a spam folder, > produces zero backscatter from spam. Backscatter is actually caused by > rejecting at the SMTP level - when it's done on the wrong > SMTP transaction. That is *not* correct. It results when mail is accepted at the SMTP level, but for some reason it cannot subsequentially be delivered. Rejecting at the SMTP level results in a SMTP error, not a bounce.
