我在一些教程的基础上在CentOS上安装了sendmail。 当我启动sendmail时，它显示sendmail失败的错误。
这里的结果如下：
systemctl status sendmail sendmail.service - Sendmail Mail Transport Agent Loaded: loaded (/usr/lib/systemd/system/sendmail.service; enabled) Active: failed (Result: exit-code) since Sun 2015-08-23 10:57:25 EDT; 12min ago Aug 23 10:57:25 test systemd[1]: Starting Sendmail Mail Transport Agent... Aug 23 10:57:25 test systemd[1]: sendmail.service: control process exited, code=exited status=203 Aug 23 10:57:25 test systemd[1]: Failed to start Sendmail Mail Transport Agent. Aug 23 10:57:25 test systemd[1]: Unit sendmail.service entered failed state. 是下面的包安装：
dove cot & M4
您是否redirect了您在“sendmail.mc”中所做的更改
#m4 /etc/mail/sendmail.mc > /etc/mail/sendmail.cf