full-disclosure - Re: [Mailman-Developers] mailman emailharvester

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Message-ID: <20050213121046.1f6a2520.vtlists@wyae.de>
From: vtlists at wyae.de (Volker Tanger)
Subject: Re: [Mailman-Developers] mailman emailharvester

Greetings!

On Sun, 13 Feb 2005 15:31:53 +0530
"Aditya Deshmukh" <aditya.deshmukh@...ine.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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