Electrical computers and digital processing systems: multicomput – Computer conferencing – Demand based messaging
Reexamination Certificate
2011-03-15
2011-03-15
Nguyen, Thu (Department: 2452)
Electrical computers and digital processing systems: multicomput
Computer conferencing
Demand based messaging
C709S204000, C709S205000, C709S207000
Reexamination Certificate
active
07908330
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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Eikenberry Scott D.
Koblas David A.
Nufire Tim
Oliver Jonathan J.
Uyeda Damon K.
Carr & Ferrell LLP
Hussain Tauqir
Nguyen Thu
SonicWALL, Inc.
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