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Re: Micorsoft's Sender ID Authentication......?

  • From: Matt Ghali
  • Date: Fri Jun 10 13:20:45 2005

On Fri, 10 Jun 2005 Valdis.Kletnieks@vt.edu wrote:

  On Thu, 09 Jun 2005 17:40:55 PDT, Matt Ghali said:
  
  > So you see, the reputation has nothing to do with your mom, and 
  > everything to do with the controlling entity, her ISP. Which makes 
  > the whole address-based sender reputation scheme almost workable, if 
  > you ignore the scaling issues.
  
  That's suspiciously close to "Ralph Nader or Ross Perot could have 
  been elected President, if you ignore the scaling issues".  :)

Yes. There's a reason I did not include a ringing endorsement of 
sender reputation schemes as the FUSSP; it has colossal inherent 
scaling issues; however I believe the 90/10 rule will make it at 
least somewhat effective.

  
  Other than that, what Matt said is correct - the problem is that 
  legitimate mail can come from literally millions of places whose 
  reputation we have no clue on....

Yes. Sender reputation on an per-ip level is a lot of state. 
However; I believe that sender reputation on a swip level may be 
attainable, and provide positive value.  

matto

PS: Even though it's painfully obvious, I speak only for myself and 
no entity currently/previously employing me- Especially those kooks 
at UCB.

--matt@snark.net------------------------------------------<darwin><
              The only thing necessary for the triumph
              of evil is for good men to do nothing. - Edmund Burke




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