Even though it's still on the server, it's still a bad idea to bounce mail. If mail is going to be 
bounced it should only happen before it is accepted by
the server. Anything else is a waste of time/resources.

On Fri, Mar 12, 2004 at 12:25:25PM -0800, Rex Deaver wrote:
> I much prefer the method used by MailWasher, don't
> know if it is available for Linux, but shouldn't be
> hard to do. You view your email while it is still on
> the server, select the spam, the good stuff is
> delivered and the bad stuff is bounced as if the email
> address was invalid. This avoids all of the pitfalls
> of challenge-response, no lost messages.
> 
> 
> --- Jonathan Hutchins <hutchins@tarcanfel.org> wrote:
> > An article which discusses this, and explains a bit
> > why it isn't being 
> > implemented more:
> > http://securityfocus.com/infocus/1766
> 
> 
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