Program product and system for performing multiple hierarchical tests to verify identity of sender of an e-mail message and assigning the highest confidence value
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United States of America Patent
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Jun 14, 2011
Grant Date -
Jun 25, 2009
app pub date -
Mar 3, 2009
filing date -
Jun 16, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The identity of the sender of an e-mail message is verified by performing a plurality of tests on DNS information. The DNS information is based on a client IP address or a sender address. Each test performed has a corresponding intrinsic confidence value representing the degree of confidence the test provides of the sender identity relationship. If multiple tests are successful the test result with the highest confidence value of the hierarchy of confidence values is used. The confidence value is optionally used in subsequent identity tests as specified by the subsequent test.
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