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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 Mary Vattavayalil University of San Francisco
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
Outlook E-mail: Send and Receive Gmail INTERNET Yahoo !
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