mdadm alerts configuration

I have a dedicated server in OVH. mdadm is installed and configured automatically, but I need configure scans and alerts.

I checked some guides in internet but I’m not safe that this is the correct steps, please can you confirme me this is correct?:

1- Send alert to root email if some disk have problems: nano /etc/mdadm.conf -> add to bottom "MAILADDR root"

2- Enable the scan and monitoring: mdadm –monitor –scan –daemonize

3- Enable the scan and monitoring when restart the server: nano /etc/rc.d/rc.local -> add to bottom "mdadm –monitor –scan –daemonize"

4- Change rc.local permits: chmod +x /etc/rc.d/rc.local

Question 1: This is correct?, I need do anything more for mdadm monitorize, scan and alert me if any disk in RAID have problems?.

Question 2: I need reboot the server after do this steps?.

Thank you again. Have a nice day!