SMTP (Simple Mail Transfer Protocol)? - PowerPoint PPT Presentation

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SMTP (Simple Mail Transfer Protocol)?

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SMTP (Simple Mail Transfer Protocol) Aaron Groff Otis Ranson Tim Patrick What is SMTP? It s the backbone of email Text based protocol developed by Jonathan B ... – PowerPoint PPT presentation

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Title: SMTP (Simple Mail Transfer Protocol)?


1
SMTP(Simple Mail Transfer Protocol)?
  • Aaron Groff
  • Otis Ranson
  • Tim Patrick

2
What is SMTP?
  • Its the backbone of email
  • Text based protocol developed by Jonathan B.
    Postel August 1982
  • The purpose of SMTP is to transfer mail reliably
    and efficiently
  • Still being used in email servers today

3
How it works
  • Post Office Example (Again)?
  • SMTP Receivers are not always the destination
    server. There could possibly be a few stops along
    the way.

4
User to Server
  • User contacts email server
  • Server gives reply
  • User sends message
  • SMTP is used two times between the sender and
    the senders mail server, and between the two
    mail servers. Another protocol is needed between
    the mail server and the receiver.

5
Server to Server
  • Sender server contacts receiver server
  • Receiver server responds to sender server
  • Message is transferred to intermediate server or
    server to server.

6
Server to User
  • Uses a different protocol to send to end user
  • Popular protocols are POP3, IMAP, etc.

7
Mail Clients
  • Thunderbird, Outlook, Evolution, Lotus Notes,
    Opera Mail, Windows Live Mail, etc.

8
Example
9
Works Cited
  • RFC 821. Postel, Jonathan. http//www.faqs.org/r
    fcs/rfc821.html
  • Data Communications and Networking. Forouzan,
    Behrouz. Pages 834-838
  • Simple Mail Transfer Protocol. (no author)
    (11/11/07) http//en.wikipedia.org/wiki/Smtp
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