不要メッセージおよび受信者側が送信を要求していないメッセージの低減のための方法及びコンピュータ可読媒体

Japanese Patent JP4537738

B2

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.

Robert George Atkinson
Joshua T. Goodman
James M. Rion
Roy Williams
Kajayi. Ahmed
Harry simon cuts
Robert El. Rouncewait
Andrew Buoy. Goldberg
Cynthia Dowork

JP2004071769A

September 08, 2010

March 12, 2004

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MICROSOFT CORPORATION

G06F13/00; G06F17/00; G06Q10/00; H04L12/58

JP2001518724A
JP2002334162A
JP2003526164A
JP2002354044A

保坂岳深,外3名,メールフィルタリングシステム,NEC技報,日本電気株式会社,2000年11月24日,第53巻,第11号,p.56~59
A DNS RR for simple SMTP sender authentication draft-danisch-dns-rr-smtp-00.txt,2002年12月,p.1~6,インターネット

Yoshikazu Tani
Kazuo Abe

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