Agenda

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1 E Feb

2 Agenda

4 ) 1 450% HTML 56kbps FTTH,ADSL Mailbox avg- Messaging Online SNS

5 80% DoS TCP RDDoS(Reflected Distributed Denial of Service) RAT(Remote Access Trojans) DoS Phishing

6 ISP 7 Gartner 2 Ferris 1500 Jupiter Love Letter 7,700 Computer Economics 54% Radicati

7 Douglas Havard M Shadowcrew

8 .com.ne.jp ISP DHA

9 SPAM SPAM SPAM SPAM 90%

10 33% % 25% 62% 28% 8% 29% 35%

13 E ISP

14 ( )

16 RBL

17 (Envelope) Graylisting, LDAP, SMTP

20 SMTP (Simple Mail Transfer Protocol 1982 RFC RFC MIME RFC RFC= Request for Commnets IETF

21 SPF Sender Policy Framework Microsoft Caller ID SPF Sender ID Microsoft Yahoo Domain Keys Cisco IIM Internet Identified Mail Domain Keys IIM DKIM SPF v1 SenderID Experimental RFC

23 ""v=spf1 ptr a:mx.example.com ~all" DNS IP Example.com Mirapoint.com SPF DNS IP Mail From DNS SenderID Header From DKIM (

24 Outbound Port 25 Blocking (OP25B) OP25B SMTP Well-known Port 25 ) ISP ISP PC ISP 25 Port ISP NTTPC hi-ho DION IIJ Nifty 2 OCN (

25 Outbound Port 25 Blocking (OP25B)

26 MailHurdle GrayListing) MailHurdle GrayListing MailHurdle GrayListing Mirapoint

27 Mail Hurdle RFC821 (RFC2821) 4xx(451) SMTP Temp fail Retry 550 Accepted

28 MailHurdle

30 24

34 Mirapoint RazorGate OS MOS Mirapoint Message Server

35 RazorGate E SMTP Exchange Lotus SMTP Junk Mail Manager & +

36 SMTP % E MailHurdle 98% E

37 MailHurdle JAL 1 7 IT RazorGate MailHurdle RAPID AntiSpam TCO /RAID 53/113GB) E 160,000 80,000

38 Rapid Anti-Spam ( 500 /300ms http RazorGate

39 Rapid Anti-Spam From: PayPal Sent: Tuesday, June 15, :16 AM To: Joe Blow; Subject: imagine being young again ferroelectric You've heard about these pills on TV, in the news, and online and have probably asked yourself, "Do they really work?" The answer is YES! IGF2 is a powerful erection enhancing product that will create erections so strong and full that over time your penis will actually grow as a direct result! If you would like a more satisfying sex life then IGF2 is for you! Check It Out Now! etn,d Hash FvvCb MD5 t2co! Hash L8k1n

40 Rapid Anti-Spam Spam (MD5) 500byte

41 Junk Mail Manager RazorGate Junk Mail Manager JMM RazorGate

42 Junk Mail Manager Spam 2000

44 RazorGate E

46 E M M4500 E Secured Messaging Infrastructure Company DS450 LDAP RG450 MTA

47 Secured Messaging Infrastructure Exchange/ Lotus Notes E Security IronPort/Barracuda RazorGate

48 X

50 Mirapoint M4500/M450/M50? > E OS > > > > >

51 35% Protocol Usage IMAP/Webmail 30% 25% 20% 15% 10% 5% 0% POP Webmail IMAP IMAP Webmail IMAP POP POP& Webmail 3

52 Mirapoint HW 4.3 * 30 */ IT * 1/5 (Source: The Radicati Group)

53 Mirapoint -TCO 3 TCO $ $ $ $ $ $ $ $ $ $87.54 $0.00 Lotus Notes ND6 MS Exchange 2003 Sun ONE Oracle v1 Mirapoint (Source: The Radicati Group, 2004)

54 Webmail Corporate Edition SSL Web WebCal ( UI

55 GroupCal Corporate Edition

56 Computerworld Mirapoint Computerworld Top 100 Emerging Companies for 2002 Mirapoint CRN 2004 (Test Center Recommended Award) Computer Reseller News RazorGate E RazorGate InfoWorld Mirapoint 2004 Spam Slammers ( ) Mirapoint Brightmail Ciphertrust Covigo InfoWorld Mirapoint

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( ) ( ) [email protected] 2 example.jp 投稿ユーザ認証配送ドメイン認証 alice @ example.jp ISP/ASP ISP/ASP? ISP A ISP B ASP C (bot) ISP A ISP B 配送配送 ASP C 配送配送 = ( ) = ( ) Submission SMTP ISP A ISP B 投稿ユーザ認証配送 ASP C