[Gross] IP Reputation

[Jesse Thompson]

I've been hearing a lot about IP reputation lately.  Not that it's new 
(SenderBase has been around for a while) but it seems to be trendy. 
Basically, it's a score of the sender based on relative volumes and spam 
ratios.  I wonder if it would be possible to use this type of 
information in gross.  i.e. set certain reputation score thresholds for 
certain actions.

I see that Sendmail has Flow Control, and IronPort has SenderBase.  Does 
anyone know of a standalone IP reputation service that's worth 
considering integrating into gross?

Jesse
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