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Reply-To: "James Users List" <server-user@james.apache.org>
Message-ID: <3FD4B939.8080401@argsol.com>
Date: Mon, 08 Dec 2003 12:47:37 -0500
From: Dick Dowdell <ddowdell@argsol.com>
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To: James Users List <server-user@james.apache.org>
Subject: Re: A good spam tool
References: <001c01c3bdaf$72a0c090$7b3f2909@jmalcolmt40>
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I have real concerns about some of the techniques people are using to 
block spam.  Anything that blocks 100% of the spam is bound to block aq 
lot of legitimate mail.  Content analysis is one of those shotgun-like 
techniques that blocks too much of the good along with the bad.

One of the most promising techniques, to me, is graylisting 
(http://projects.puremagic.com/greylisting/).  It won't block any mail 
from properly configured legitimate mail servers while increasing the 
processing costs of any spammer who wants to circumvent it.  However, 
given the way James works, I can't see any way to implement a 
graylisting mailet. If I'm wrong, I'd appreciate someone setting me 
straight before I waste time building a filter in front of James.

Regards,
Dick Dowdell
Argosy Solutions


J Malcolm wrote:

>Thanks for the quick response.
>
>If everyone is writing their own, that's fine.  Is there a sharing
>repository where people can contribute what they have so others don't
>need to reinvent the wheel?
>
>You have some good criteria here.  But content analysis seems to be
>missing.  Have we thrown in the white towel on trying to write an
>algorithm to figure out v1@gra, etc.?
>
>Seems there is a market for killer matcher that keeps up to date with
>all the latest tricks.  I'd pay a nominal subscription fee just like I
>pay Norton to keep my virus defs up to date.
>
>J.
>
>-----Original Message-----
>From: James [mailto:james@news.utopix.ch] 
>Sent: Monday, December 08, 2003 10:55 AM
>To: James Users List
>Subject: A good spam tool
>
>Hello,
>
>I think there is no good anti-spam tool... so I developped it by
>myself...
>
>We need to identify which mail is really a spam mail !! If any doubt, we
>
>can't refuse it...
>
>Here are my rules (for the moment) :
>
>+ blacklists servers (James defaults + bl.spamcop.net)
>+ I've got my own list of "forbidden froms" that I update every day... 
>(@doubleclick, @.... )
>+ When more than 2 local users does not exist in the recipients (spam 
>mails usually go to james@ sam@ pat@your-domain)
>+ when from = null
>+ when date > Date.Now
>+ without To:
>
>
>if you've got other ideas :o)
>
>
>
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>
>  
>


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