dovecot
給定用戶名稱，用戶密碼。dovect程序帶我們去看用戶郵件文件
dovecot並不負責郵件的投遞和儲存【mta】它只是將儲存在郵件服務器上的郵件顯示出來
1 安裝服務
yum install dovecot dovecot-mysql -y
2 [root@faxin-mail ~]# vim /etc/dovecot/dovecot.conf
login_trusted_networks = 0.0.0.0/0 信任網絡
protocols = imap pop3 lmtp 使用協議
disable_plaintext_auth = no 開啓明文認證
[root@faxin-mail ~]# vim /etc/dovecot/conf.d/10-auth.conf
123 !include auth-sql.conf.ext 開啓mysql認證方式
3 [root@faxin-mail ~]# cp /usr/share/doc/dovecot-2.2.10/example-config/dovecot-sql.conf.ext /etc/dovecot/dovecot-sql.conf.ext
生成dovecot讀取mysql的配置
vim /etc/dovecot/dovecot-sql.conf.ext
driver = mysql 數據庫類型
connect = host=localhost dbname=email user=postuser password=postuser 查詢時用到的庫，用戶，密碼
password_query = \ 查詢密碼匹配
SELECT username, domain, password \
FROM users WHERE username = '%u' AND domain = '%d'
user_query = SELECT home, 666 AS uid, 666 AS gid FROM users WHERE userid = '%u'查詢郵件內容
default_pass_scheme = plain 默認認證方式爲明文
[root@faxin-mail ~]# vim /etc/dovecot/conf.d/10-auth.conf
mail_location = maildir:/home/vmail/%d/%n 制定郵件位置
first_valid_uid = 666 文件查詢用戶身份
first_valid_gid = 666
