To allow files in a directoy to be served by Apache with SELinux enabled:
chcon -R -t httpd_sys_content_t <directory>
To check on the files security permissions use:
ls -RZ <directory>
To allow Apache to send emails use:
setsebool -P httpd_can_sendmail 1
To check if the permission is on or off, use:
/usr/sbin/getsebool httpd_can_sendmail