On Wed, 12 Nov 2003 20:47:21 -0600 Alan Jackson <[EMAIL PROTECTED]> wrote:
> On Tue, 11 Nov 2003 18:09:16 +0800
> "M.W. Chang" <[EMAIL PROTECTED]> wrote:
>
> >
> > have you ever toyed with the Bayesian learner?
> > I wonder where SA stores her rules.
> >
>
> It's not *really* Bayesian - I don't think any of them are. They all
> ignore the cross-correlation. That is, they don't correct for the fact
> that enlarge and p...s frequently occur together, and sum the
> probabilities. To do it right is hard.
Most of the e-mail that gets to me uses "." scattered throughout the
text. Like th.is so the fi.lte.rs don't see th.is as a co.mple.te
wor.d. They need to remove the "." sprinkled throughout the text.
>
> I used to run a "Bayesian" filter at work, until they disabled Unix
> e-mail at the end of October, and it worked fairly well.
>
> At home I run a homebrew. First I run a whitelist of known good
> addresses, then I look for e-mail lists, then spamassassin, and then I
> run my UniqIP filter. I keep a little database of every IP I have seen
> in the handoff to my ISPs, and if I have never seen it before, I drop
> it into a special folder. I also note spam IP's in the database as
> well. About 95% of my spam currently comes from unique IP's.
> Apparently the blacklists are effective enough that the big time
> spammers now use a "Hedy Lamar" style multiplexing technology, and
> blast small loads from many compromised systems.
Some use much lower technology strategies like this one (an e-mail I
received):
/* begin e-mail:
Hello,
I need 2 dedicated windows 2000 servers with at least 2,000 ip
addresses.
These servers will be used to run my email campaign and send bulk email
in
direct mode with my own optin mailing software. If you are in a
position,
and have a dedicated network setup to deal with the complaints generated
from my email advertising I would be willing to pay $2,000 a month for
the 2
servers. I need a reliable provider to set me up immediately. If you can
offer me such service please call me at: xxx-xxx-xxx, Leave me a message
and I will get back to you right away. Please dont reply back to this
email,
only call me.
Thanks
Bob
end e-mail */
There are probably stupid ISPs out there that will do this. Can't
believe he only offered a measley 2k/month. For this kind of headache,
I'd need a couple more zeroes added to that number. Wonder if he got
any takers?
>
> I'm also working on a spam detector utilizing DNA sequencing
> technology. Seriously!
Start by sequencing lower life forms, since that's what spammers seem to
be.
Ciao,
David A. Bandel
--
Focus on the dream, not the competition.
Nemesis Racing Team motto
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