What you are about to read is a solution to spam that requires no reengineering of e-mail, the Web or any other systems. It could be set up to guarantee spam blocking using simple, existing technologies.

I've dealt with corporate intranets in the past, which have completely blocked e-mail from the outside unless one is on an approved list. Contact must always go through the network administration.

Individuals working within these institutions receive absolutely NO spam inside their network because they have turned the filtering problem on its head. In typical spam filtering, you filter information from select addresses or with select content. In reverse filtering, you only permit information from select addresses or with select content.

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