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Determining whether e-mail messages originate from recognized domains

  • US 7,496,634 B1
  • Filed: 01/07/2005
  • Issued: 02/24/2009
  • Est. Priority Date: 01/07/2005
  • Status: Active Grant
First Claim
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1. A computer implemented method for determining whether e-mail messages originate from recognized domains, the method comprising the steps of:

  • examining incoming e-mail messages;

    for each incoming e-mail message, determining whether a from field of the e-mail message indicates that the e-mail message originates from a recognized domain;

    responsive to determining that the from field of an incoming e-mail message indicates that the e-mail message originates from a recognized domain, identifying a list of authorized domains associated with the recognized domain from which the from field indicates that the e-mail message originates;

    comparing at least one domain associated with at least one link embedded in the e-mail message to the list of authorized domains associated with the recognized domain; and

    determining whether the e-mail message originates from the recognized domain responsive to results of the comparing step.

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