Reducing unwanted and unsolicited electronic messages by...

Details Reducing unwanted and unsolicited electronic messages by... Reducing unwanted and unsolicited electronic messages by...

2003-10-10

2009-06-23

Dennison, Jerry (Department: 2443)

Electrical computers and digital processing systems: multicomput

Computer conferencing

Demand based messaging

Reexamination Certificate

active

07552176

ABSTRACT:
The present invention provides for generating inputs that can be provided to a message classification module to facilitate more reliable classification of electronic messages, such as, for example, as unwanted and/or unsolicited. In one embodiment, a sending messaging server provides an appropriate response to address verification data thereby indicating a reduced likelihood of the sending messaging server using a forged network address. In another embodiment, it is determined if a messaging server is authorized to send electronic messages for a domain. In yet another embodiment, electronic message transmission policies adhered to by a domain are identified. In yet a further embodiment, a sending computer system expends computational resources to solve a computational puzzle and includes an answer document in an electronic message. A receiving computer system receives the electronic message and verifies the answer document.

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