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2007 Fiscal Year Final Research Report Summary

Effective Anti-Spam Method with SMTP Session Abort

Research Project

Project/Area Number 17300018
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Computer system/Network
Research InstitutionOkayama University

Principal Investigator

YAMAI Nariyoshi  Okayama University, Information Technology Center, Professor (90210319)

Co-Investigator(Kenkyū-buntansha) NAKAMURA Motonori  OKAYAMA UNIVERSITY, National Institute of Informatics, Academic Network R&D Center, Project Professor (30268156)
MIYASHITA Takuya  Tsuyama National College of Technology, Department of Computer and Information Engineering, Associate Professor (70304300)
OKAYAMA Kiyohiko  OKAYAMA UNIVERSITY, Information Technology Center, Assistant Professor (20252588)
KAWANO Keita  OKAYAMA UNIVERSITY, Information Technology Center, Assistant Professor (40397899)
Project Period (FY) 2005 – 2007
Keywordse-mail / spam mail / SMTP / tempfailing / distributed collaborative spam database / Sender Policy Framework
Research Abstract

This research project aims to develop an effective anti-spam method with minimal administration. This method introduces SMTP session abort function to obtain the header or the body of a message without actual delivery, in combination with existing techniques organically. This method has the following features.
1. Speeding up processing
We have developed a speeding up method of the existing tempfailing technique by introducing a secondary mail gateway (SMG). With this method, the sender would immediately resend the failed messages to the SMG after SMTP session abort, and hence delivery delay would be reduced.
2. Improving spam detection rate
Since most of non-resent messages destined to non-existing recipients are spam, we have improved the spam detection rate of the existing tempfailing method by registering them automatically into a distributed collaborative spam database. In addition, we have shown that delivery delay and the number ofReceived fields are possible criteria of spam detection according to delivery path analysis.
3. Reducing administrative cost
We have developed an advanced method of retransmission judgment using some header field or the message body obtained on the first delivery attempt. Since this method accepts a message from an untrusted SMTP client even in case of the second time delivery from a different SMTP client, the administrator does not have to keep such SMTP clients in the white list any more. In addition, this method can recover the non-rent messages in case of false positive, by showing their headers or bodies to users.
4. Suppressing bounce mails
5. Suppressing address leakage
We have adopted the existing method that receives all messages even to non-existing recipients and sends bounce mails only if sender authentication by Sender Policy Framework (SPF) succeeds. However, SPF has some drawback that it is difficult to authenticate forwarded messages. We have solved this drawback by tracing recipient addresses in the header.

  • Research Products

    (12 results)

All 2009 2008 2007 2006

All Journal Article (10 results) (of which Peer Reviewed: 2 results) Presentation (2 results)

  • [Journal Article] 宛先アドレスの変更検出によるSPF転送問題解決手法2009

    • Author(s)
      清家巧
    • Journal Title

      情報処理学会研究報告 2009-IOT-004

      Pages: 119-124

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] SMTPセッションの強制切断によるspamメール対策2009

    • Author(s)
      山井成良
    • Journal Title

      情報処理学会論文誌 50

      Pages: 940-949

    • Description
      「研究成果報告書概要(和文)」より
    • Peer Reviewed
  • [Journal Article] A Solving Method for SPF Forwarded Mail Problem by Tracing Recipient Addresses2009

    • Author(s)
      Takumi SEIKE
    • Journal Title

      IPSJ SIG Technical Report 2009-IOT-004

      Pages: 119-124

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] An Anti-Spam Method with SMTP Session Abort2009

    • Author(s)
      Nariyoshi YAMAI
    • Journal Title

      IPSJ Journal Vol. 50, No. 3

      Pages: 940-949

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] 迷惑メール判別のための配送経路情報の解析2008

    • Author(s)
      清家巧
    • Journal Title

      電子情報通信学会技術研究報告 IN2007-233

      Pages: 443-448

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] SMTPセッション強制切断法におけるユーザ単位でのメール受信設定機能の設計と実装2007

    • Author(s)
      清家巧
    • Journal Title

      電子情報通信学会技術研究報告 IN2006-203

      Pages: 137-142

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Design and Implementation of User Level Mail Reception Settings on Anti-Spam Method with SMTP Session Abort2007

    • Author(s)
      Takumi SEIKE
    • Journal Title

      Technical Report of IEICE IN2006-203

      Pages: 137-142

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Delivery Path Analysis of E-mail for Spam Mail Filtering2007

    • Author(s)
      Takumi SEIKE
    • Journal Title

      Technical Report of IEICE IN2007-233

      Pages: 443-448

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] SMTPセッションの強制切断によるspamメール対策手法2006

    • Author(s)
      山井成良
    • Journal Title

      情報科学技術フォーラム情報技術レターズ 5

      Pages: 367-370

    • Description
      「研究成果報告書概要(和文)」より
    • Peer Reviewed
  • [Journal Article] An Anti-Spam Method with SMTP Session Abort2006

    • Author(s)
      Nariyoshi YAMAI
    • Journal Title

      Information Technology Letters Vol. 5

      Pages: 367-370

    • Description
      「研究成果報告書概要(欧文)」より
  • [Presentation] An Anti-Spam Method with SMTP Session Abort2008

    • Author(s)
      Nariyoshi Yamai
    • Organizer
      MIT Spam Conference 2008
    • Place of Presentation
      Cambridge, Massachusetts, USA
    • Year and Date
      2008-03-27
    • Description
      「研究成果報告書概要(和文)」より
  • [Presentation] An Anti-Spam Method with SMTP Session Abort2008

    • Author(s)
      Nariyoshi YAMAI
    • Organizer
      MIT Spam Conference 2008
    • Place of Presentation
      Cambridge, Massachusetts, USA.
    • Year and Date
      2008-03-27
    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2010-06-09  

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