NewsForge: Why Microsoft’s Sender ID Patent Should Not Be Granted

“ISP owner Robert Craddock liked Microsoft’s recent Sender ID
antispam proposal and patent application so much that he came up
with a nearly identical system–except he did it long before
Microsoft made its version public. In fact, he started using the
system he now calls Mail-Block back in 1998.

“In May of 2003, Craddock offered his system to Microsoft, which
rejected it–and the concept itself–in writing, not long before
unleashing Sender ID…”


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