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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 • 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: • • • • • 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: • • • • • • USER PASS STAT RETR n DELE QUIT THANK YOU!!!
