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Re: Why Modified SPF is Working

2004-07-06 09:44:25
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On Saturday 03 July 2004 06:17 pm, Jon Kyme wrote:
Stuart D. Gathman wrote:
SPF has never claimed to block spam.

Actually, that's not entirely true is it?
For one thing, the executive summary (on spf.pobox.com) has a heading
"SPF reduces inbound spam."


Reducing spam and blocking spam are two different things. SPF only blocks 
one kind of spam: spam with forged headers. What David discovered, if I 
understand correctly, is that most (like 99.99%) of all spam is forged, and 
so by applying his SPF rules, he has eliminated almost all of his spam. I 
too would like to know how many legitimate emails he has blocked.

- -- 
Jonathan M. Gardner
Mass Mail Systems Developer, Amazon.com
jonagard(_at_)amazon(_dot_)com
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