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Last Modified: 2006/01/27M. Tsuji

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13 2006/01/27 Last Modified : 2006/01/27 M. Tsuji Original : 2004/01/30 K. Komatsu – PowerPoint PPT presentation

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Title: Last Modified: 2006/01/27M. Tsuji


1
????????????????????
  • ???? ?13?
  • 2006/01/27

Last Modified 2006/01/27 M. Tsuji Original
2004/01/30 K. Komatsu
2
???????
  • ?????????
  • ?????????????
  • ?????????? ??????

3
?????????
  • ????????????????????????????????????????????????
  • WWW, mail, DNS, News, FTP, etc
  • ????????????
  • ?????????????

4
????(?????)
  • ????????????????
  • ???? ?5? ??? Internet

5
????? (????)
  • A ???????????A??? B??????

B ?????????B???
  • A??????????????B?????????????????
  • B???????????????????

6
????? (????)
  • C Hi. This is C. Is B there?

B ????
C Hello?
B !!? ????
  • B????????????????????????????????

7
?????(E-mail)
  • ?????
  • ?????
  • ?? web ???
  • ???????????????????
  • etc

8
???????
  • ??????????

hoge_at_mail.ep.sci.hokudai.ac.jp
9
????????
10
????????
  • ????????????????

11
?????????(??)
  • ??????(ex. SMTP???)
  • ??????(??)
  • ?????(??)
  • ?????? (ex. POP3???)
  • ?????????????
  • MTA (Mail Transfer Agent) ???

????????
12
??????????
  • ????????
  • ??????????????????SMTP (Simple Mail Transfer
    Protocol)
  • ??????????????????POP (Post Office Protocol)
  • ??????????????IMAP (Internet Message Access
    Protocol) ?????????????

13
??????(???)
  • ??????????????
  • ??????
  • ex) Outlook
  • Outlook Express ??
  • ????????
  • MUA (Mail User Agent)

  • ???

14
??????(???)???
  • ?????????
  • ?????????
  • ??????????????
  • ???????????
  • ?????????????????????????????????

15
????????
16
??????
  • ??????
  • (???????????????????????????????????)
  • ???
  • ??

17
???
From hoge_at_ep.sci.hokudai.ac.jp Thu Jan 27
103416 2005 Return-Path lthoge_at_ep.sci.hokudai.ac
.jpgt Delivered-To foo_at_ep.sci.hokudai.ac.jp Receiv
ed (qmail 28696 invoked from network) 27 Jan
2005 103013 Received from orange.ep.sci.hokudai
.ac.jp (HELO www.ep.sci.hokudai.ac.jp)
(133.50.15.) by grey.ep.sci.hokudai.ac.jp
with SMTP 27 Jan 2005 103013 Subject
?????? From ?? lthoge_at_ep.sci.hokudai.ac.jpgt To
?? ltfoo_at_ep.sci.hokudai.ac.jpgt X-Mailer Microsoft
Outlook Express 6.00.2900.2670 Hello!! This is
test mail.
18
????????
  • ?????????
  • ????????????????????
  • ???????
  • MTA?MUA?????????????????????
  • SMTP,POP,IMAP??????

19
??????????
  • ???
  • ??????
  • ???????????
  • ?????????????? ??
  • ????????????????
  • HTML?????
  • ????????????

20
??????????
  • ??????
  • ??
  • ?????????????????
  • ?????
  • ???????
  • ?????????????
  • ???????
  • ??????????????

21
??????????
  • ?????(?????????????)???????????
  • ?????????http//www1.big.or.jp/roadist/netiquett
    e/

22
????1
  • IT???? e-words
  • http//e-words.jp/
  • ?????????????????? http//www.soumu.go.jp/joho_tsu
    sin/security/index.htm

23
????2
  • ?????(spam)???????(????)http//www2g.biglobe.ne.jp
    /stakasa/spam-j.html
  • ?????????http//www1.big.or.jp/roadist/netiquett
    e/
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