Overview
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* Features

  * Security and Authentication

  * Mailbox Management

  * Message Management

  * Calendar and Contact (DAV) Collection Management

  * Storage

  * Load Management

* Concepts

  * Access Control Lists

  * Login Authentication

  * Quotas

  * New Mail Notification

  * Partitions

  * News

  * POP3 Server

  * The syslog facility

  * Mail Directory Recovery

  * Configuration Directory

  * Message Delivery

  * Sieve, a Mail Filtering Language

  * Cyrus Murder, the IMAP Aggregator