橡C12電子メール最新技術動向revisd.PDF

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1 Internet Week 99 Internet Week Naoaki Watanabe,Japan Network Information Center

2 IMAP S/MIME PGP

3 IMAP4 Happy99 OutLook Exchange Windows MAPI i WAP 1

4 PDA PKI(Public Key Infrastructure) ( ) SMTP(Simple Mail Transfer Protocol) POP3(Post Office Protocol) & APOP MIME - RFC2045-RFC2049 POP before SMTP S/MIME PGP(PGP/MIME) IMAP4rev1 (Internet Message Access Protocol)- RFC2060 LDAPv3(Lightweight Directory Access Protocol) - RFC SMTP MTA-MTA ESMTP AUTH-SMTP SMTP POP before SMTP SPAM SMTP AUTH 2

PGP(PGP/MIME) IMAP4rev1 (Internet Message Access Protocol)- RFC2060 LDAPv3(Lightweight

5 MIME LDAP LDAP LDAP SMTP POP IMAP LDAP SSL IMAP4rev1 S/MIME,PGP(PGP/MIME) LDAPv[2 3] IMAP4 ISP NTT IMAP IMAP IMAP ISP IMAP4 ISP LDAP Netscape Communicator LDAP S/MIME PGP LDAP LDAP (1) SMTP AUTH(RFC2554)- SMTP Service Extention forauthentication SPAM MTA SMTP AUTH 3

IMAP4 ISP LDAP Netscape Communicator LDAP S/MIME PGP LDAP LDAP (1)

6 SMTP MTA-MTA UNIX PC POP3 MUA MTA MTA MTA SMTP X.509 (2) MDNs(RFC2298)- Message Disposition Notifications MDN MUA MDN Netscape (3) DSNs(RFC1894)- An Extensible Message Format for Delivery Status Notifications DSN MTA MUA MTA MTA MUA DSN MDN Return-Received-To MTA DSN DSN MDN MUA MDN MDN MDN MDN MDN Internet Mail Consortium Mail Connect 5 DSN MDN 4

DSNs(RFC1894)- An Extensible Message Format for Delivery Status Notifications DSN MTA

7 CDA WAP i 5

8 ISP 2 WebMail MIME 6

9 ( ) ( ) ( ) PC UNIX ( ) SendMail UNIX DNS 7

10 MX PC POP PC PC SPAM SPAM 3 [email protected] ( ) VPN 8

11 EC ( ) PC 9

12 IMAP4rev1(Internet Mail Access Protocol) (Domino Exchange ) POP PC PC IMAP IMAP ISP IMAP4 IMAP IMAP4 rev1 RFC 2060 IMAP IMAP / PC PC MailConnect 5 3 MailConnect 5 IMAP4 DSN MDN 3 MDN DSN MDN DSN IMAP4 IMAP4 Language Extension Language Extension draft-gahrns-imap-language-00.txt 10

MailConnect 5 3 MailConnect 5 IMAP4 DSN MDN 3 MDN DSN MDN DSN IMAP4

13 Language Extension Language Extension ( Password Error ) XXX Messaging Interoperability Japan MailConnect 5 Messaging Interoperability Japan IRI( ) (10 ) Messaging Interoperability Japan ( ) (ExpressMail) (W 32) (N-PLEX) (Netscape MessagingServer Netscape Communicator) (AT-Mail Server AT- ) (Domino Notes) (Winbiff) (Eudora) (IMail Server for Windows NT) (Software.com InterMail) RFC 11

Japan ( ) (ExpressMail) (WeMail32) (N-PLEX) (Netscape MessagingServer Netscape Communicator)

14 Interop Message Solution Messaging Interoperability Japan 2nd (Messaging Interoperability Japan 2nd) Encode Contents-type Line Break( ) IMAP ( ISO-2022-jp) (RFC2231) Accept Language ( ) IMAP4 IMAP IMAP 12

Japan 2nd) Encode Contents-type Line Break( ) IMAP (

15 IMAP4 UNIX mbox cyrus IMAP ( ) ( ) cyrus imapd -rw cyrus mail May 21 21:09 cyrus.cache -rw cyrus mail 136 Feb 8 20:27 cyrus.header -rw cyrus mail May 21 21:09 cyrus.index -rw cyrus mail 53 Feb 8 20:36 cyrus.seen -rw cyrus mail 402 May 21 21: rw cyrus mail Mar 30 08: rw cyrus mail Mar 30 08: rw cyrus mail Mar 30 08: rw cyrus mail Mar 30 08: rw cyrus mail Mar 30 08: rw cyrus mail Mar 30 08:

seen -rw----- 1 cyrus mail 402 May 21 21:09 8200. -rw----- 1 cyrus mail 438674 Mar 30 08:28 8199. -rw------- 1 cyrus mail 179410 Mar 30 08:28 8198.

16 S/MIME PGP SMTP POP IMAP4 IMAP4Server Firewall? 14

17 DES 3DES RC2 RC4 IDEA MISTY FEAL RSA Diffie-Hellman ElGamal SHA-1 MD5 ( ) 2 ( ) 15

18 S/MIME PGP S/MIME PGP PGP (A) (B) (C) (A) (C) S/MIME (CA ) CA Netscape Communicator Outlook Express Winbiff S/MIME 16

19 S/MIME A B C A C C A S/MIME S/MIME CRL CRL( Certification Revocation List) 17

20 CRL ( ) CRL ISO-2022-JP MTA MDNs RFC2298) DSNs RFC1894),? MDN DSN SMTP SMTP MTA-MTA POP3 MUA SMTP POP before SMTP SMTP AUTH SMTP 18

21 SMTP IMAP LDAP End To End MIME S/MIME Q : ID RFC ID A : ID RFC RFC822 ID Q : MDN Peer-to-Peer 1 N A : Q : PC POP IMAP WebMail WebMail WebMail A: IMAP WebMail IMAP WebMail WebMail IMAP WebMail WebMail SSL 19

22 Q : IMAP A : Q : IMAP UTF8 A: 20

guide.PDF

guide.PDF ExpressMail Ver2.0 Copyright ( ) 1998/12/25 REV.1 1 ExpressMail Ver2.0 ExpressMail Ver2.0 ExpressMail Ver2.0 WindowsNT SMTP/POP3/IMAP4 (1) SMTP sendmail 8.8.5 DLL (2) POP3 RFC1939 APOP (3) IMAP4 RFC2060

橡C12電子メール最新技術動向revisd.PDF

橡C12電子メール最新技術動向revisd.PDF