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Internet & E-mail. Mary Vattavayalil University of San Francisco. Internet and Email. Servers. What are servers? Web Servers Email Servers. Protocols & “Languages”. Communicating computers are identified by IP addresses. Eg: 192.168.1.73 http ://myspace.com

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Internet e mail l.jpg

Internet & E-mail

Mary Vattavayalil

University of San Francisco



Servers l.jpg
Servers

What are servers?

  • Web Servers

  • Email Servers


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Protocols & “Languages”

  • Communicating computers are identified by IP addresses. Eg: 192.168.1.73

  • http://myspace.com

  • Email protocols- SMTP, POP, IMAP


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Outlook

E-mail: Send and Receive

Gmail

INTERNET

Yahoo !


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Sending Mail

SMTP (Simple Mail Transfer Protocol)

  • Published in 1982 by Jonathan Postel.

  • Sendmail- One of the first Mail Transfer Agents to use SMTP.

  • Other MTAs:


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SMTP commands:

  • HELO

  • MAIL FROM

  • RCPT TO

  • DATA

  • QUIT


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Receiving Mail

POP (Post Office Protocol) &

IMAP (Internet Message Access Protocol)

  • Some email clients:

Mozilla Thunderbird


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POP commands:

  • USER

  • PASS

  • STAT

  • RETR n

  • DELE

  • QUIT



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