Internet

1
Internet E-mail

• Mary Vattavayalil
• University of San Francisco

2
Internet and Email

3
Servers

• What are servers?
• Web Servers
• Email Servers

4
Protocols Languages

• Communicating computers are identified by IP
  addresses. Eg 192.168.1.73
• http//myspace.com
• Email protocols- SMTP, POP, IMAP

5
E-mail Send and Receive
Gmail
INTERNET
Yahoo !
6
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

7
SMTP commands

• HELO
• MAIL FROM
• RCPT TO
• DATA
• QUIT

8
Receiving Mail

• POP (Post Office Protocol)
• IMAP (Internet Message Access Protocol)
• Some email clients

Mozilla Thunderbird
9
POP commands

• USER
• PASS
• STAT
• RETR n
• DELE
• QUIT

10
THANK YOU!!!