System and method for selectively increasing message transaction costs

• US 7,383,306 B2
• Filed: 07/31/2003
• Issued: 06/03/2008
• Est. Priority Date: 07/31/2003
• Status: Active Grant

• Current Assignee: Hewlett Packard Enterprise Development LP (Hewlett-Packard Enterprise Company)
• Original Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Inventors: Karp, Alan H.
• Primary Examiner(s): Cardone; Jason
• Assistant Examiner(s): Swearingen; Jeffrey R
• Application Number:
  US10/632,402
• Publication Number:
  US 20050027879A1
• Time in Patent Office: 1,769 Days
• Field of Search: 709/206, 709/241, 709/238
• US Class Current: 709/206
• CPC Class Codes: H04L 51/212 using filtering or selective blocking

Abstract

A system and method for increasing message transaction costs is disclosed. One basic embodiment of the method includes the elements of: receiving over a data link a request to route a message to a recipient address; calculating a delay period, in response to the request; dropping the data link; receiving over the data link a next request to route a message to a recipient address; dropping the data link, if the next request was received during the delay period; and routing the message referenced in the next request to the recipient address, if the delay period has expired. The system of the present invention, includes all means for implementing the method.

Claims

1. A method for increasing message costs to minimize junk or spam emails, comprising:

receiving at a relaying computer over a data link a request from a sending computer to route a message to a recipient address;

calculating a delay period, in response to the request;

sending a command from the relaying computer to the sending computer, the command causing the sending computer to re-queue the message for re-transmission of the message to the relaying computer;

dropping the data link;

receiving over the data link a next request to route the message to the recipient address;

dropping the data link, if the next request was received during the delay period; and

routing the message referenced in the next request to the recipient address, if the delay period has expired.

2. The method of claim 1:

wherein the calculating element includes calculating the delay period once per day.

3. The method of claim 1:

wherein the calculating element includes calculating a random delay period.

4. The method of claim 1:

wherein the dropping element includes transmitting a transport layer command which closes the data link.

5. The method of claim 1:

wherein the dropping element includes transmitting a TCP layer “

FIN”

command over the data link.

6. The method of claim 1:

wherein the dropping element includes closing the data link at a network layer without sending any message back over the data link.

7. The method of claim 1:

wherein the dropping element includes silently closing the data link at an IP layer.

8. The method of claim 1:

wherein the message is an e-mail message.

9. The method of claim 1:

wherein the receiving element includes receiving over the data link the request to route the message from the sending computer to the recipient address hosted by the relaying computer.

10. A system for increasing message transaction costs to minimize junk or spam emails, comprising a:

sending computer;

a relaying computer;

means for receiving at a relaying computer over a data link a request from a sending computer to route a message to a recipient address;

means for calculating a delay period, in response to the request;

means for sending a command from the relaying computer to the sending computer, the command causing the sending computer to re-queue the message for re-transmission of the message to the relaying computer;

means for dropping the data link;

means for receiving over the data link, if the next request was received during the delay period; and

means for routing the message referenced in the next request to the recipient address, if the delay period has expired.