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RE: [Asrg] 2a. Spam Measurement - SenderBase.com

Yakov Shafranovich <research@solidmatrix.com> Tue, 01 July 2003 21:19 UTC

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To: "Olson, Margaret" <molson@roving.com>, asrg@ietf.org
From: Yakov Shafranovich <research@solidmatrix.com>
Subject: RE: [Asrg] 2a. Spam Measurement - SenderBase.com
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Date: Tue, 01 Jul 2003 17:17:58 -0400

Thank you for pointing this out.

At 05:13 PM 7/1/2003 -0400, Olson, Margaret wrote:

> From their help page:
>
>
>How do you estimate email volumes?
>In general, we use a "sampling" approach, similar to the method a company 
>like Nielsen might use for their TV ratings. We receive data feeds from 
>over 6,000 domains (mostly from small to mid-size ISP's, universities and 
>companies) participating in Bonded Sender about how much incoming email 
>traffic they get. We then parse this data by sending domain and IP address 
>and scale up our estimates based on our estimate of the % of email volume 
>that participating email receivers represent as a % of total email volume.
>
>-----Original Message-----
>From: Yakov Shafranovich 
>[<mailto:research@solidmatrix.com>mailto:research@solidmatrix.com]
>Sent: Tuesday, July 01, 2003 4:13 PM
>To: asrg@ietf.org
>Subject: [Asrg] 2a. Spam Measurement - SenderBase.com
>
>I recently ran across this website, www.senderbase.com, operated by
>IronPort who also operate www.BondedSender.com. This site, SenderBase,
>seems to be a collection of spam statistics split up by domain/IP,etc. It
>might come in pretty useful although I cannot figure out what their sources
>are.
>
>Yakov


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