Transcript Email Slides - University of San Francisco

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
• Email protocols- SMTP, POP, IMAP
E-mail: Send and Receive
Gmail
INTERNET
Yahoo !
Outlook
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:
SMTP commands:
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HELO
MAIL FROM
RCPT TO
DATA
QUIT
Receiving Mail
POP (Post Office Protocol) &
IMAP (Internet Message Access
Protocol)
• Some email clients:
Mozilla Thunderbird
POP commands:
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USER
PASS
STAT
RETR n
DELE
QUIT
THANK YOU!!!