The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 30, 2010
Filed:
Jan. 07, 2005
Manav Mishra, Kirkland, WA (US);
Elissa E. S. Murphy, Seattle, WA (US);
Geoffrey J Hulten, Lynwood, WA (US);
Joshua T. Goodman, Redmond, WA (US);
Wen-tau Yih, Champaign, IL (US);
Manav Mishra, Kirkland, WA (US);
Elissa E. S. Murphy, Seattle, WA (US);
Geoffrey J Hulten, Lynwood, WA (US);
Joshua T. Goodman, Redmond, WA (US);
Wen-Tau Yih, Champaign, IL (US);
Microsoft Corporation, Redmond, WA (US);
Abstract
Email spam filtering is performed based on a combination of IP address and domain. When an email message is received, an IP address and a domain associated with the email message are determined. A cross product of the IP address (or portions of the IP address) and the domain (or portions of the domain) is calculated. If the email message is known to be either spam or non-spam, then a spam score based on the known spam status is stored in association with each (IP address, domain) pair element of the cross product. If the spam status of the email message is not known, then the (IP address, domain) pair elements of the cross product are used to lookup previously determined spam scores. A combination of the previously determined spam scores is used to determine whether or not to treat the received email message as spam.