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Filtering email messages corresponding to undesirable domains

  • US 7,844,678 B2
  • Filed: 06/25/2008
  • Issued: 11/30/2010
  • Est. Priority Date: 06/30/2003
  • Status: Expired due to Fees
First Claim
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1. A communication system comprising:

  • a receiver configured to receive an email message, the email message originating from an originating domain, the email message comprising a header, the header including an originating Internet protocol (IP) address, the originating IP address being indicative of the originating domain;

    a first database having a non-U.S. IP address, the non-U.S. IP address being indicative of an origin from a domain originating from an undesired geographic region;

    a first filter configured to extract the originating IP address from the received email message; and

    compare logic configured to compare the extracted originating IP address with the non-U.S. IP address in the first database to determine whether the originating IP address corresponds to a domain from an undesired geographic location.

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