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METHODS AND SYSTEMS FOR SECURELY DELIVERING ELECTRONIC MAIL TO HOSTS HAVING DYNAMIC IP ADDRESSES

  • US 20020004826A1
  • Filed: 09/15/1998
  • Published: 01/10/2002
  • Est. Priority Date: 09/15/1998
  • Status: Active Grant
First Claim
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1. A method for securely delivering electronic mail to a mail server having a dynamic IP address comprising:

  • registering a dynamic IP address and a receiving mail server code of a receiving mail server with a dynamic name server;

    transmitting a request for delivery of electronic mail from the receiving mail server to a delivering mail server;

    transmitting a request for the dynamic IP address from the delivering mail server to a private name server;

    transmitting a request for determining the dynamic IP address from the private name server to the dynamic name server, the request including the receiving mail server code;

    extracting the dynamic IP address from the dynamic name server based on the receiving mail server code;

    transmitting the dynamic IP address to the delivering mail server; and

    delivering electronic mail from the delivering mail server to the receiving mail server utilizing the dynamic IP address extracted from the dynamic name server.

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