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URL: http://www.ii.com/internet/messaging/spam/

ii.com • Reverse Spam Filtering: "Winning Without Fighting" by Nancy McGough

A strategy for dealing with spam by filtering non-spam. Includes sample implementation using procmail and pine.

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Comments

ixx

a step-by-step guide and article on spam filtering from server to email client.. cutting down the amount of filtering needed.. automating as much as possible.. get rid of as many false positives as you can

For partitioning spamminess, I prefer red<blue<green to spam<bacn<ham. My terms elaborated in http://www.ii.com/internet/messaging/spam/

stuartcw

Englishman who was lived in Japan since 1988.

Algorithm for filtering spam

chrisyeh

Chris Yeh has been building Internet businesses since 1995. He is the VP Marketing for PBworks, which provides highly vertical solutions that help businesses work more efficiently and effectively. Millions use PBworks each month for partner/client collaboration, new business development, project management, social intranets, and knowledge management. Previously, he was the first investor in and interim CEO of Ustream.TV, which provides an open and distributable platform for live interactive online video. Chris is also an active angel investor and the founder and Chairman of the Harvard Business School Technology Alumni Association. Chris earned two degrees from Stanford University and an MBA from Harvard Business School.

After years of thinking about, writing about, and filtering messages, I've decided that the best strategy for me is to not filter spam, but instead to filter non-spam and let the dregs, which are often spam, fall through my filters and land in catchall mailboxes. I then periodically open each catchall box, sort it by spam score, and visually scan it looking for non-spam. Since the non spam messages, if there are any, bubble to the top of the sorted-by-spam-score box, I need to look carefully at only the top of these catchall mailboxes. When I find a non-spam message in a catchall box, I “bounce forward” it to one of my magnet-updater email addresses so that my non-spam filters will catch this type of message in the future.

"Winning Without Fighting" by Nancy McGough

"After years of thinking about, writing about, and filtering messages, I've decided that the best strategy for me is to not filter spam, but instead to filter non-spam..."

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