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Milter-greylist

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Message

The secret why milter-greylist works

2009-01-21 by manu@netbsd.org

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.

-- 
Emmanuel Dreyfus
http://hcpnet.free.fr/pubz
manu@...

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