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Paper Abstract and Keywords
Presentation 2009-06-26 13:25
[Encouragement Talk] A Study of Spam Mail Detection before Receiving DATA Command at SMTP Server and its Evaluation using Large-scale Mail Log Data
Yukiko Sawaya, Yutaka Miyake (KDDI R&D Labs, Inc.) NS2009-41
Abstract (in Japanese) (See Japanese page) 
(in English) As the number of spam mail has been increasing and it occupies 85% of all email traffic, SMTP servers are frustrated with the task of filtering. To address this problem, it has been proposed that the SMTP server blocks spam mail before receiving the message body at the SMTP session by using host information or behaviors of spam sender clients such as S25R or greylisting. Although these proposals block spam mail at a high rate, they also block legitimate mail, which causes a great deal of trouble to legitimate SMTP clients because they are forced to resend email. We propose an efficient spam mail-blocking system based on information obtained before receiving the DATA command at the SMTP session. This method suppresses false positive rate minimally and works as a lightweight primary filter. The preliminary result of our method was that it could block over 90% of spam mail with few false positives.
Keyword (in Japanese) (See Japanese page) 
(in English) Spam Mail / ,Spam mail filter / SMTP session / SMTP server / SMTP client / / /  
Reference Info. IEICE Tech. Rep., vol. 109, no. 102, NS2009-41, pp. 61-66, June 2009.
Paper # NS2009-41 
Date of Issue 2009-06-18 (NS) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
and
reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF NS2009-41

Conference Information
Committee NS OCS PN  
Conference Date 2009-06-25 - 2009-06-26 
Place (in Japanese) (See Japanese page) 
Place (in English) Nagasaki Museum of History and Culture (Nagasaki) 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Photonic Network System, Optical Control, Optical Switching, WDM, Multi-layer, Next Generation Transport 
Paper Information
Registration To NS 
Conference Code 2009-06-NS-OCS-PN 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Study of Spam Mail Detection before Receiving DATA Command at SMTP Server and its Evaluation using Large-scale Mail Log Data 
Sub Title (in English)  
Keyword(1) Spam Mail  
Keyword(2) ,Spam mail filter  
Keyword(3) SMTP session  
Keyword(4) SMTP server  
Keyword(5) SMTP client  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Yukiko Sawaya  
1st Author's Affiliation KDDI R&D Laboratries, Inc. (KDDI R&D Labs, Inc.)
2nd Author's Name Yutaka Miyake  
2nd Author's Affiliation KDDI R&D Laboratries, Inc. (KDDI R&D Labs, Inc.)
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Speaker Author-1 
Date Time 2009-06-26 13:25:00 
Presentation Time 25 minutes 
Registration for NS 
Paper # NS2009-41 
Volume (vol) vol.109 
Number (no) no.102 
Page pp.61-66 
#Pages 6 
Date of Issue 2009-06-18 (NS) 

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