Please configure it so that the server will send an email to ‘patrick@mobile9.com’ whenever someone logs into the server as root.

We can do it this in two ways

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SSH:

echo 'SSH Root Access (Your Server Name) on:' `date` `who` | mail -s "ALERT: Root Access from `who | cut -d"(" -f2 | cut -d")" -f1`" your@email-address.com

OR

WHM:

For tweaking this from WHM, the exact steps are:

Login to WHM > Scroll down the left menu to the bottom to reach the Plugins section > ConfigServer Security & Firewall > Firewall Configuration:

LF_SSH_EMAIL_ALERT: Send an email alert if anyone uses su to access another account. This will send an email alert whether the attempt to use su was successful or not.

LF_SU_EMAIL_ALERT: Send an email alert if anyone accesses WHM via root. An IP address will be reported again 1 hour after the last tracked access (or if lfd is restarted).