On Wed, 2002-08-28 at 14:14, Mertens Bram wrote:
> On Wed, 2002-08-28 at 20:06, Antonio Bemfica wrote:
> > This is trivial to do using procmail (by checking the Message-ID
> > header). You can get a bit more sophisticated and do an MD5 hash of the
> > body of incoming messages and store it on a database (dbtool, for
> > example: http://www.daemon.de/dbtool/).
> > 
> > If you or anyone else is interested I can post a recipe that does the
> > above.
> 
> Well I certainly am interested!
> 
> I don't know anything about procmail though, would I have to configure
> much to get this working?  I am running Evo 1.0.8 btw...
> 

You don't want to detect duplicates based on message-id; it's trivial
for an attacker to prevent you from seeing a given message, and the same
problem could happen even without malicious intent.

Peter

-- 
Peter Williams     [EMAIL PROTECTED] / [EMAIL PROTECTED]

"[Ninjas] are cool; and by cool, I mean totally sweet."
  -- REAL Ultimate Power


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