Postfix Cyrus Web cyradm HOWTO

Figure 1. Postfix   the big picture

Doesn't it look impressive?   It looks much more complicated than it is. Postfix is

indeed nice to configure and handle.

Unlike sendmail, postfix is not one monolithic program, it is a compilation of small

programs, each of which has a specialized function. At this point I don't what to go

into details about what each program does what. If you are interested how Postfix

works, please see the documentation at http://www.postfix.org/docs.html

In this document you will find the information needed to get the system running in

conjunction with the other components of a full e mail setup.

2.2. Cyrus IMAP

Cyrus IMAP is developed and maintained by Carnegie Mellon University.

Unlike the WU IMAPd package, Cyrus uses its own method to store the user's mail.

Each message is stored in its own file. The benefit of using separate files is improved

reliability since only one message is lost if there is a filesystem error. Metadata such

as the status of a message (seen, etc) is stored in a database. Additionally, the

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