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Linux Email: Set up and Run a Small Office Email Server by Patrick Ben, Magnus Back, Alistair McDonald, Carl Taylor, David Rusenko

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Chapter 3. Incoming Mail with POP and IMAP

Postfix will receive e-mail and deliver it to the user's inbox, but additional software is required to read it with ease. There are two standards for retrieval of e-mail from a host. The first is called Post Office Protocol (POP). POP3 is most commonly used. This is normally used to read e-mail from the server, store it in a client application, and remove the e-mail from the server. This is often used by Internet Service Providers (ISPs). The e-mail is subsequently manipulated by the client application, for example, Outlook Express or Mozilla Thunderbird.

The second protocol is called Internet Message Access Protocol (IMAP). The IMAP system is usually used when the e-mail is to stay on the server. IMAP ...

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