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Webmail

Webmail. Agenda. Why use webmail? What is webmail Email basic Email system MDA MTA MUA Protocol SMTP POP3 IMAP. Agenda. Webmail system structure Vs email system Example TWIG, SquirreMail Demo. Why use webmail?. Common interface Resources for training are little

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Webmail

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  1. Webmail

  2. Agenda • Why use webmail? • What is webmail • Email basic • Email system • MDA • MTA • MUA • Protocol • SMTP • POP3 • IMAP

  3. Agenda • Webmail system • structure • Vs email system • Example TWIG, SquirreMail • Demo

  4. Why use webmail? • Common interface • Resources for training are little • Machine independent • Only browser is needed

  5. Why use webmail? • Mobility and easy to use • Can use any place that connect internet • Only need a browser and a account • No setting needed

  6. Email system • MDA ( Mail Delivery Agent) concentrate on delivering mail to local users • Just like what postman do e.g. Binmail, Procmail

  7. Email system • MTA ( Mail Transfer Agent) determines destination of recipient address and transfer the mail • just like the post office e.g. sendmail, qmail, Postfix

  8. Email system • MUA ( Mail User Agent ) as an interface for users to read messages stored in their mail box • just like your hand and foot • This is machine dependant program e.g. kmail (linux), outlook express ( windows)

  9. What is webmail • Email basic • Email system MailServer MailServer Email database Email database SMTP MTA MDA MDA MTA POP3/IMAP SMTP Workstation Workstation MUA MUA

  10. Protocol • SMTP ( Simple Mail Transfer Protocol) • Protocol used in MTA • Developed for transferring messages across Internet between MTA servers.

  11. Protocol • POP3 (Post Office Protocol) • Simplest MUA protocol • Current version of POP is 3 -> POP3 • MUA use POP3 to access and read messages in user’s mailbox • Messages will store on local workstation, and deletes messages from server, thus save space on mail server

  12. Protocol • IMAP(Interactive Mail Access Protocol) • MUA protocol • Current version 4, revision 1 -> IMAP4rev1 • MUA use it to manipulate mail messages in folders on the mail server

  13. Protocol • IMAP(Interactive Mail Access Protocol) • Messages keep in mail server -> can access in different workstation • Disk space must be watched

  14. Webmail system • Structure MailServer Web server Email database MUA Webmailclient MTA Workstation browser

  15. Webmail system • Vs email system • Only need a web server, so no need to setup on workstation

  16. Webmail system • Example TWIG, SquirreMail

  17. Demo

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