[142292] in North American Network Operators' Group
Re: Address Assignment Question
daemon@ATHENA.MIT.EDU (John R. Levine)
Mon Jun 20 18:22:14 2011
Date: 20 Jun 2011 18:20:18 -0400
From: "John R. Levine" <johnl@iecc.com>
To: "=?UTF-8?Q?J=C3=A9r=C3=B4me_Nicolle?=" <jerome@ceriz.fr>
In-Reply-To: <BANLkTin+G_o1yEdNT=_jndSZujXs0eeQdksBY35ok1C=RUW-ew@mail.gmail.com>
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
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>> Hi. =C2=A0I'm the guy who wrote the CEAS paper on greylisting.
>
> URL ?
They don't have Google where you are, huh?
http://www.ceas.cc/papers-2005/120.pdf
> You're right, greylisting on a large system may not be efficient as it
> won't block everything and will eat-up quite a lot of system
> ressources. But it's a good start once basic protocol-checks have
> already eliminated the 80% amount of bullshit sent from botnets.
Most of us use DNSBLs like the CBL or Spamhaus XBL to catch the botnet=20
mail. It's a lot easier to let them tune their protocol quirk checker=20
than to do it myself.
R's,
John
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