I am having a problem on the server (CentOS 6, Plesk 11.5) where a particular user is using a mass mailer and is blacklisting our IP address. I have tried to delete this user using:
but it returns a message saying that the user is currently logged in. I thought ok, kill the process. So I tried:
pkill -u test
and also locked the account using:
passwd -l test
which will hopefully stop him logging into the system in future.
Still saying user is logged in. How can I log this user out to enable me to delete him off the system?