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Anti-Spam Tools
by Dameon Welch-Abemathy on November 4, 2007

This seems like a sound idea for an important reason: you can easily validate that both the sender and recipient can exchange information with one another. It's a bit like the three-way handshake in a TCP connection, which does much the same thing for exactly the same reason.
This would go a long way towards helping the spam problem, but it won't eliminate it entirely. Spam places that send email from their own domains could easily set up stuff to pass these tests. You'd still have to do some additional filtering, such as maintain a blacklist of prohibited domains. Additional filtering based on message content might also be desirable.
Tags:
Receiver+Initiated+Authentication
ria
spam
receiver
2007
receiver+initiated
initiated+authentication
Trackback: http://publish.creative-weblogging.com/publish/mt-tb.pl/100313
Mr Wong
Vote for Receiver Initiated Authentication: The Holy Grail Of Spam Filtering?:
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Rating: 6.75 out of 4 vote(s) cast.
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Response from:
Aswath
(11/11/07 1:03pm)
Response from:
PhoneBoy
(11/17/07 2:01am)
I wonder how you'd force OpenID authentication without breaking the existing SMTP protocol. Interesting thought.
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It will not eliminate spam, but will be easy to enforce a whitelist and also we can maintain a more granular blacklist.