Message challenge response
First Claim
1. A method of registering an electronic-mail (e-mail) sender for the purpose of sending e-mail messages to an e-mail recipient, the method comprising:
- receiving an e-mail sent by the e-mail sender to the e-mail recipient;
executing instructions stored in memory, wherein execution of the instructions by a processor of an independent third-party auditor generates a challenge message in response to an e-mail message received by the e-mail recipient, wherein the challenge message does not invite a response to the challenge message from the e-mail sender;
sending the challenge message to the e-mail sender;
receiving a bounce error message associated with the challenge message within a predetermined period of time after the sending of the challenge message, wherein the bounce error message is evaluated by the independent third-party auditor; and
sending a report generated by the independent third-party auditor to the e-mail recipient, the report indicating receipt of the bounce error message during the predetermined period of time, wherein the e-mail recipient classifies e-mail messages from the e-mail sender based on the report.
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Accused Products
Abstract
A system and method are disclosed for registering a email sender for the purpose of sending an email message to an email receiver including receiving a challenge message wherein the challenge message includes a machine answerable question; processing the challenge message to determine that it is a challenge message sent for the purpose of authorizing delivery of the email message; analyzing the question to determine a valid response to the challenge message; and sending the valid response that includes the answer wherein a nontrivial amount of resources are required to send the valid response.
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Citations
20 Claims
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1. A method of registering an electronic-mail (e-mail) sender for the purpose of sending e-mail messages to an e-mail recipient, the method comprising:
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receiving an e-mail sent by the e-mail sender to the e-mail recipient; executing instructions stored in memory, wherein execution of the instructions by a processor of an independent third-party auditor generates a challenge message in response to an e-mail message received by the e-mail recipient, wherein the challenge message does not invite a response to the challenge message from the e-mail sender; sending the challenge message to the e-mail sender; receiving a bounce error message associated with the challenge message within a predetermined period of time after the sending of the challenge message, wherein the bounce error message is evaluated by the independent third-party auditor; and sending a report generated by the independent third-party auditor to the e-mail recipient, the report indicating receipt of the bounce error message during the predetermined period of time, wherein the e-mail recipient classifies e-mail messages from the e-mail sender based on the report. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system of registering an electronic-mail (e-mail) sender for the purpose of sending e-mail messages to an e-mail recipient, the system comprising:
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an independent third-party auditor server that executes instructions stored in memory, wherein execution of the instructions by a processor of the independent third-party auditor generates a challenge message in response to an e-mail message received by an e-mail recipient, the e-mail sent by an e-mail sender to the e-mail recipient, wherein the challenge message does not invite a response to the challenge message from the e-mail sender; and a network interface coupled to the independent third-party auditor server that receives the e-mail sent by the e-mail sender to the e-mail recipient, wherein the network interface; sends the challenge message to the e-mail sender; receives a bounce error message associated with the challenge message within a predetermined period of time after the sending of the challenge message, wherein the bounce error message is evaluated by the independent third-party auditor server; and sends a report generated by the independent third-party auditor server to the e-mail recipient, the report indicating receipt of the bounce error message during the predetermined period of time, wherein the e-mail recipient processes registration of the e-mail sender based on the report. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A non-transitory computer readable storage medium having embodied thereon a program, wherein the program is executable by a processor to perform a method of registering an electronic-mail (e-mail) sender for the purpose of sending e-mail messages to an e-mail recipient, the method comprising:
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receiving an e-mail sent by the e-mail sender to the e-mail recipient; executing instructions stored in memory, wherein execution of the instructions by a processor of an independent third-party auditor generates a challenge message in response to an e-mail message received by the e-mail recipient, wherein the challenge message does not invite a response to the challenge message from the e-mail sender; sending the challenge message to the e-mail sender; receiving a bounce error message associated with the challenge message within a predetermined period of time after the sending of the challenge message, wherein the bounce error message is evaluated by the independent third-party auditor; and sending a report generated by the independent third-party auditor to the e-mail recipient, the report indicating receipt of the bounce error message during the predetermined period of time, wherein the e-mail recipient classifies e-mail messages from the e-mail sender based on the report. - View Dependent Claims (18, 19, 20)
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Specification