Message auditing
View Patent ↗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.
1. A method for auditing a message, the method comprising:
adjusting a difficulty of a challenge;
sending the adjusted challenge to a sender of the message, the sending of the adjusted challenge initiated by a mail server associated with a receiver of the message;
receiving a response from the sender of the message at an auditing server, the response including an answer to the adjusted challenge, the challenge initiated by a mail server associated with a receiver of the message;
auditing the response at the auditing server to locate the answer to the adjusted challenge, wherein auditing the response includes detecting that the answer fits a pattern of response found in a plurality of previously received answers, each previously received answer associated with a previously received message;
generating a report, the report indicating results corresponding to auditing the answer to the adjusted challenge; and
sending the report from the auditing server to the mail server associated with the receiver subsequent to generating the report.
2. The method of claim 1 , wherein auditing the response further includes parsing the response to locate the answer to the adjusted challenge.
3. The method of claim 1 , wherein the report includes a message identifier.
4. The method of claim 3 , wherein the identifier includes one or more of an e-mail address, a domain name, an IP address, or any combination thereof.
5. The method of claim 3 , wherein auditing the response further includes locating the identifier in the response.
6. The method of claim 1 , wherein receiving the response includes receiving from the sender an identifier of the message.
7. The method of claim 1 , wherein the report includes a verification of the answer to the adjusted challenge as a correct answer to the adjusted challenge.
8. The method of claim 1 , wherein auditing the response further includes classifying the message.
9. The method of claim 8 , wherein classifying the message includes authorizing delivery of the message to a recipient associated with the mail receiver.
10. The method of claim 1 , further comprising sending information to the mail receiver indicating that the message is an unsolicited junk message.
11. The method of claim 1 , wherein the report includes a status of an address of the sender.
12. The method of claim 1 , wherein auditing the response further includes determining whether the sender is a sender of unsolicited junk messages.
13. The method of claim 1 , further comprising:
classifying the message upon detecting the pattern; and
communicating the classification of the message to the receiver.
14. An apparatus configured to audit a message, the apparatus comprising:
a memory;
a network interface configured to receive a message over a communications network; and
a processor configured to execute software stored in the memory to:
adjust a difficulty of a challenge;
send the adjusted challenge to a sender of the message, the sending of the adjusted challenge initiated by a mail server associated with a receiver of the message,
receive a response from the sender of the message, the response including an answer to the adjusted challenge;
audit the response to locate the answer to the adjusted challenge, wherein auditing the response includes detecting that the answer fits a pattern of response found in a plurality of previously received answers, each previously received answer associated with a previously received message;
generate a report, the report indicating results corresponding to auditing the answer to the challenge; and
send the report to the receiver subsequent to generating the report.
15. A non-transitory computer-readable storage medium having embodied thereon a program, the program being executable by a computer to perform a method for auditing a message, the method comprising:
adjusting a difficulty of a challenge;
sending the adjusted challenge to a sender of the message, the sending of the adjusted challenge initiated by a receiver of the message;
receiving a response from the sender of the message, the response including an answer to the adjusted challenge;
auditing the response to locate the answer to the adjusted challenge, wherein auditing the response includes detecting that the answer fits a pattern of response found in a plurality of previously received answers, each previously received answer associated with a previously received message;
generating a report, the report indicating results corresponding to auditing the answer to the adjusted challenge; and
sending the report to the receiver subsequent to generating the report.