Warning: CSF/LFD Firewall - SECURITY ISSUE
CSF/LFD Firewall contact email for alerts is NOT set on your server, click here to check it.
Just to Clarify this, I found the Instructions pretty Vague too
I think this is what you do
Use that editor in the CSF.conf file
Find the line that says LF_ALERT_TO
Put your email between the quotes
Also set up a From address like
yourserver@yourdomain.comand LF_ALERT_FROM
Garry