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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