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AUTHENTICATING ELECTRONIC COMMUNICATIONS

  • US 20080098077A1
  • Filed: 12/19/2007
  • Published: 04/24/2008
  • Est. Priority Date: 10/07/2002
  • Status: Active Grant
First Claim
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1. A method of authenticating an electronic mail item, comprising:

  • parsing a header of the electronic mail item to obtain an IP address of a sender of the electronic mail item from a transmission data mail header of the header and to obtain a purported sender domain name from a visible mail header of the header;

    interrogating a business entity database with the purported sender domain name to obtain an associated IP address of the sender associated with the purported sender domain name;

    comparing the IP address and the associated IP address of the sender to determine whether they match or not; and

    generating an authenticity indicator in response to the comparison to indicate of likelihood that the electronic mail item is spoofed.

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