Milter-greylist

On Wed, Jan 21, 2009 at 06:06:19AM +0100, manu@... wrote:
> Petar Bogdanovic <petar@...> wrote:
> 
> > > (...) I have to confess I fear that it would make milter-greylist a
> > > valuable target for spammers. 
> > I really didn't get that one. Could you please explain?
> 
> Spam is a healthy business. People invest in developping 
> - malware to take over the control of millions of machines
> - spam engines in order to work around spam filters.
> - various smart things to defeat CAPTCHA
> 
> Spammers work on developements that will have a good return on
> investement. Since no milter-greylist implementation scales to a very
> large installations, working on defeating milter-greylist itself is not
> financially attractive: it will mean reachine a small amount of new
> mailboxes. This seems uninteresting when you can work on injecting spams
> in massive mailing platforms. 
> 
> If milter-greylist scales to high, that may not be the case any longer.

SpamAssassin is pretty popular too, but still (after nearly a decade of
being freely available on SourceForge) very effective..



   Petar Bogdanovic