E-mail stamping with from-header validation

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 7917756
APP PUB NO 20060277597A1
SERIAL NO

11421748

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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Effective aspects of stamping outbound e-mail are combined with a registration system for e-mail senders. A mail sender participates by registering From: line information with a trusted third-party repository known as a stamp authority. When the sender sends an e-mail message, a hash of the From: line is compared against the From: line information for the sender stored in the repository. If the result is a match, the e-mail is allowed to be sent, subject to any other restrictions imposed by the stamping process. If there is not a match, then the e-mail is prevented from being stamped.

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Patent Owner(s)

Patent OwnerAddress
BARRACUDA NETWORKS INC3175 SOUTH WINCHESTER BLVD CAMPBELL CA 95008

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Dreymann, Daniel T Palo Alto, US 4 78

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