Check csf LF_SCRIPT_ALERT option WARNING
This option usually notify us when a large amount of email is sent from a particular script on the server, helping track down spam scripts
in-order to fix this error we need to ssh into the server and edit the csf configuration file
vi /etc/csf/csf.conf
In csf configuration file search for LF_SCRIPT_ALERT = “0″
Change the value from “0″ to “1″ to fix the issue.
Once it is done don’t forget to restart the CSF