full-disclosure - Re: Get rid of french marketing spam

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Message-ID: <20130306124057.GA8456@gremlin.ru>
Date: Wed, 6 Mar 2013 16:40:57 +0400
From: gremlin@...mlin.ru
To: full-disclosure@...ts.grok.org.uk
Subject: Re: Get rid of french marketing spam

On 06-Mar-2013 11:52:59 +0100, Arnaud Jacques wrote:

 > Are you filtering your emails with Clamav? Get rid of french
 > marketing spam. It's free.

The ostrich-style technique of getting the message and then silently
killing it can lead only to increasing number of spam messages: once
you accept the message (issuing the SMTP 354 code in reply to the
DATA command), spammers get a confirmation that the address they are
sending to is alive, and will send more and more. When you respond
with 550, they don't.

For ClamAV, its' primary task is to check whether executable (in wide
sence) attachments contain something dangerous. Using it for checking
all the messages is just an ineffective waste of resources...

-- 
Alexey V. Vissarionov aka Gremlin from Kremlin <gremlin ПРИ gremlin ТЧК ru>
GPG key ID: 0xEF3B1FA8, keyserver: hkp://subkeys.pgp.net
GPG key fingerprint: 8832 FE9F A791 F796 8AC9 6E4E 909D AC45 EF3B 1FA8

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