Re: namedroppers, continued

On Fri, 06 Dec 2002 16:48:46 CST, "Ayyasamy, Senthilkumar (UMKC-Student)" said:

> If the proof of effort requires, say, 10 seconds to compute, then the
> economics of sending spam are radically altered, as a single machine
> can send only 8,000 messages per day.
Those of us who run mail servers that are currently resource-constrained
while doing 8K msgs/hour worry anytime we hear that sort of idea.
On the other hand, I wouldn't mind taking a 10-second hit every time *I*
send a message.

Possibly what is needed is a hybrid approach:

1) If you're a "big" mail server, you can probably prevail on your DNS
admins to list you in whatever DNS-based verification system (in our entire
2 /16s of address space, there are less than 10 boxes that would have a major
resource issue, but would benefit froma DNS-based solution.

2) If you're not listed in the DNS, you have to do a compute-intensive proof.

What would people think of that idea?
-- 
                                Valdis Kletnieks
                                Computer Systems Senior Engineer
                                Virginia Tech

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