[94457] in North American Network Operators' Group

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Re: Anyone from BT...

daemon@ATHENA.MIT.EDU (Tony Finch)
Tue Jan 23 11:51:19 2007

Date: Tue, 23 Jan 2007 16:38:08 +0000
From: Tony Finch <dot@dotat.at>
To: Chris Edwards <chris@eng.gla.ac.uk>
Cc: nanog@merit.edu
In-Reply-To: <Pine.SOC.4.62.0701231504440.8855@spruce.eng.gla.ac.uk>
Errors-To: owner-nanog@merit.edu


On Tue, 23 Jan 2007, Chris Edwards wrote:
>
> Aside from the invalid mails, this article suggests they're mostly
> identifying spam by the source IP (ie. their customer's IP) being listed
> in a DNSBL.  So how come they need this super-duper real-time content
> scanning infrastructure ?  Why wouldn't they download the DNSBLs, and
> simply run an offline grep for entries in their own IP space ?

I understood from the article that they were just describing an early
prototype and that they were planning to add content scanning checks
later - see the "other spam detection techniques" section.

Tony.
-- 
f.a.n.finch  <dot@dotat.at>  http://dotat.at/
FAEROES: NORTHWEST VEERING NORTH 5 TO 7 OCCASIONALLY GALE 8, LATER DECREASING
3 OR 4. ROUGH OR VERY ROUGH. WINTRY SHOWERS. GOOD.

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