Sonicwall Inc.

Dell Software Inc.

Dell Products Inc.

Tim Nufire

David A Koblas

Brian K Wilson

Scott D Eikenberry

Jonathan J Oliver

Damon K Uyeda

Paul R Wieneke

A system and method are disclosed for maintaining a whitelist, including: obtaining message data based on an email message sent by a user; extracting recipient information from message data; updating the whitelist using the recipient information.

Probability based whitelist

A system and method are disclosed for routing a message through a plurality of test methods. The method includes: receiving a message; applying a first test method to the message; updating a state of the message based on the first test method; and determining a second test method to be applied to the message based on the state.

Efficient use of resources in message classification

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.

Message challenge response

Updating hierarchical whitelists

Message testing based on a determinate message classification and minimized resource consumption

Message auditing

Identifying e-mail messages from allowed senders

Message testing

Growing community of inventors

San Francisco, CA, United States of America

Tim Nufire