Re: [Asrg] New proposal for spam blocking: Greylisting

[Dave Crocker <dcrocker@brandenburg.com>]

YS> Lets say a spammers has gained control over a specific IP address for an X
YS> amount of time. He normally sends out 1M messages via that IP. So now to
YS> get around this block, he will send out 2M messages retrying delivery. This
YS> increases his costs slightly but not to the point where it becomes 
YS> unprofitable.

right.


YS> The reason why spammers have not tried this approach yet
YS> become this blocking method has not been widespread.

right.


d/
--
 Dave Crocker <mailto:dcrocker@brandenburg.com>
 Brandenburg InternetWorking <http://www.brandenburg.com>
 Sunnyvale, CA  USA <tel:+1.408.246.8253>, <fax:+1.866.358.5301>


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