You don't desire to send email alert for specific user from the server, we can ignore that alert by adding a user id in csf.uidignore file.

Do get the UID (user id) from two ways,



vi /etc/passwd



username:x:537:535::/home/username:/bin/bash

Another way to get a UID


id -u username

537

open the uidignore configure file and put the UID (user id),


vi /etc/csf/csf.uidignore

537

Finally, Restart csf and lfd.
 
# /etc/init.d/lfd restart
Stopping lfd:                                              [  OK  ]
Starting lfd:                                              [  OK  ]