Re: e2e

[Douglas Otis <dotis at mail-abuse.org>]

On Aug 15, 2007, at 12:16 PM, Fred Baker wrote:

> in that context, here's one that one could use to dramatically  
> reduce spam intake.
>
> That suggests a simple approach - in one's firewall, null route the  
> addresses reported by the reputation service as spam spews. It's a  
> network layer solution to an application layer problem, yes, and it  
> has all of the issues that reputation services have, and btw, you  
> still want to run spamassasin-or-whatever on what comes through.  
> Cisco IT tells me that it results in a dramatic reduction in spam,  
> however, and saves them serious numbers of monetary units.
>
> The communication system isn't being a filter, properly speaking -  
> it is simply routing some traffic to black holes using standard  
> routing technology. And it doesn't relieve the application of the  
> burden of filtering. But it can help reduce the volume of crapola  
> at the application.

The early version of the "Realtime Black-hole list" published as a  
BGP feed worked in the same manner.  The current owners recognized  
the need to reduce the burden on an email filtering. : )

-Doug

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