Dovecot 是一个开源的 IMAP 和 POP3 邮件服务器，支持 Linux/Unix 系统。
POP / IMAP 是 MUA 从邮件服务器中读取邮件时使用的协议。其中，与 POP3 是从邮件服务器中下载邮件比起来，IMAP4 则是将邮件留在服务器端直接对邮件进行管理、操作。而Dovecot 是一个比较新的软件，由 Timo Sirainen 开发，最初发布于 2002年7月。作者将安全性考虑在第一，所以 Dovecot 在安全性方面比较出众。另外，Dovecot 支持多种认证方式，所以在功能方面也比较符合一般的应用。
2012-09-18发布2.1.10 上一个版本是2012年08月02日的2.1.9.修正了一些bug.
改进：
+ imap: Implemented THREAD=ORDEREDSUBJECT extension.
+ Added "doveadm exec" command to easily execute commands from
libexec_dir, e.g. "doveadm exec imap -u user at domain"
+ Added "doveadm copy" command.
+ doveadm copy/move: Added optional user parameter to specify the
source username. This allows easily copying mails between different
users.
+ Added namespace { disabled } setting to quickly enable/disable
namespaces. This is especially useful when its value is returned by
userdb.
+ Added mailbox_alias plugin. It allows creating mailbox aliases using
symlinks.
+ imapc storage: Added imapc_max_idle_time setting to force activity
on connection.
+ fts-solr: Expunging multiple messages is now faster.
- director: In some conditions director may have disconnected from
another director (without logging about it), thinking it was sending
invalid data.
- imap: Various fixes to listing mailboxes.
- pop3-migration plugin: Avoid disconnection from POP3 server due
to idling.
- login processes crashed if there were a lot of local {} or remote {}
settings blocks.
下载：http://www.dovecot.org/releases/2.1/dovecot-2.1.10.tar.gz
主页：http://www.dovecot.org/
来自:开源中国社区
