Electrical computers and digital processing systems: multicomput – Computer conferencing – Demand based messaging
Reexamination Certificate
2011-04-05
2011-04-05
Dennison, J Bret (Department: 2443)
Electrical computers and digital processing systems: multicomput
Computer conferencing
Demand based messaging
Reexamination Certificate
active
07921173
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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Ahmed Khaja E.
Atkinson Robert George
Dwork Cynthia
Goldberg Andrew V.
Goodman Joshua T.
Dennison J Bret
Merchant & Gould P,C,
Microsoft Corporation
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