[root@oracle ~]# service sendmail stop
Shutting down sm-client:                                   [  OK  ]
Shutting down sendmail:                                    [  OK  ]
[root@oracle ~]# chkconfig --list sendmail
sendmail       	0:off	1:off	2:on	3:on	4:on	5:on	6:off
[root@oracle ~]# chkconfig sendmail off
[root@oracle ~]# 
[root@oracle ~]# chkconfig --list sendmail
sendmail       	0:off	1:off	2:off	3:off	4:off	5:off	6:off