SELinux阻止Apache在CentOS上发送电子邮件。
报错提示：Sendmail fatal: setrlimit: Permission denied

# sestatus
SELinux status:                 enabled
SELinuxfs mount:                /selinux
Current mode:                   enforcing
Mode from config file:          enforcing
Policy version:                 24
Policy from config file:        targeted

# getsebool httpd_can_sendmail
httpd_can_sendmail --> off

# setsebool -P httpd_can_sendmail 1

# getsebool httpd_can_sendmail
httpd_can_sendmail --> on