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Posted to users@spamassassin.apache.org by Justin Mason <jm...@jmason.org> on 2004/04/29 00:26:22 UTC

Re: SA is great but i need more

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Jeff Chan writes:
> On Wednesday, April 28, 2004, 3:06:10 PM, John Hardin wrote:
> > I strongly suggest you employ a set of DNSRBLs to reject mail clients
> > very early in the SMTP phase. There are DNSRBLs that are highly trusted
> > (e.g. the SpamHaus list), ones for zombies and such
> 
> Agreed.  The trick is to know which ones are trustworthy,
> fit your needs, etc.

Note that the link on http://wiki.apache.org/spamassassin/DnsBlocklists
contains just this information. Most DNS blocklist comparisons just
compare how much *spam* they block, with no idea of the false positives; 
hence an extreme BL (such as one that blocks every single IP address
in the 255.255.255.255 space) will "win" by that criteria. ;)

Take a look at http://taint.org/2003/11/07/184247a_mail.html for details
on FPs, based on real-time data back in October 2003.

- --j.
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