Anti spam solutions

Ralph Doncaster ralph-Zd07PnzKK1IAvxtiuMwx3w at public.gmane.org
Wed Oct 8 14:21:04 UTC 2003


On Wed, 8 Oct 2003, Fraser Campbell wrote:

> On Wednesday 08 October 2003 09:17, Robert Brockway wrote:
> > How would that be an advantage, given that the remote MTA will just try
> > again later?
>
> Ralph is talking about greylisting I believe. It is supposed to be very
> effective since many spammers, and viruses, do not actually retry their
> emails.  There's a whitepaper at http://projects.puremagic.com/greylisting/

Wow, this is *exactly* what I was thinking of (specifically looking at the
remote IP, MAIL FROM:, and RCPT TO:).  Thanks for the reference.

-Ralph
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