关闭sendmail服务

（1）[root@sample~]#/etc/rc.d/init.d/sendmailstop　←关闭sendmail服务
或者[root@sample~]#servicesendmailstop　←关闭sendmail服务
Shuttingdownsendmail:[OK]
Shuttingdownsm-client:[OK]

（2）[root@sample~]#chkconfigsendmailoff　←关闭sendmail自启动

（3）[root@sample~]#chkconfig--listsendmail　←确认sendmail自启动已被关闭（都为off就OK）
sendmail0:off1:off2:off3:off4:off5:off6:off