Greetings!
On Sun, 13 Feb 2005 15:31:53 +0530
"Aditya Deshmukh" <aditya.deshmukh_at_online.gateway.expertworks.net>
wrote:
>
> 1. postfix will reject 90% of the spam during the initial handshake
> stage - by using a variety of dns / mx resolution tricks
> 2. clamav and spam assassin integrate into postfix so that you don't
> have to accept the spam the server can even issue a 550 in the middle
> of the data stage
> 3. using some known blacklists like spamhaus and rbl will cut down
> spam to 99.9 %
Well, my current stats say:
User unknown: 25 %
RBL-blocked: 32 %
keyword blocked: 1 %
other blocked: 24 %
locally delivered: 17 %
So a "cut down to 99.9%" is a bit pessimistic (filtering only 0.1% out)
- if you meant "cut by 99.9%" too optimistic. But cutting off 82% even
before the DATA command is not too shabby. OTOH it is a sign on how bad
mail has become if more than 80% are plain junk even without looking at
the content.
Bye
Volker
--
Volker Tanger http://www.wyae.de/volker.tanger/
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Received on Feb 13 2005
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