E-mail usage pattern detection
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United States of America Patent
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Jan 14, 2003
Issued Date -
N/A
app pub date -
Jul 19, 1999
filing date -
Jul 19, 1999
priority date (Note) -
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Abstract
A method and apparatus for identifying undesired e-mail messages by receiving e-mail messages, storing fields from the headers of the received e-mail messages and analyzing the stored fields for patterns indicative of undesired e-mail messages. The pattern recognition performed includes counting the number of e-mails received which have the same or similar field content within the headers. This number can be compared to an absolute threshold number, or to the total number of messages in a sample of e-mail messages. The sample may be composed of a predetermined number of received e-mail messages, or may include e-mail messages received during a predetermined time interval. Exceeding thresholds or certain ratios will trigger alarms to alert monitoring functions and update lists of known sources and types of undesired e-mail messages for filtering.
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