postfix 邮件1

######邮件部分######   前提 1.保证环境的纯净   2.dns的配置   *此处关于dns不做解释，可参照之前dns博客理解 [[email protected] ~]# yum install bind -y   [[email protected] ~]# systemctl start named   [[email protected] ~]# vim /etc/named

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