While running your server, you will probably find individuals or groups of persons that you do not wish to have access to your server.
For this purpose, the ircd understands "kill lines".
The killed host or IP mask.
The user ident.
Ex: email@example.com where "root" is the user mask.
It MUST be !filepath or "Message". Otherwise it will not work.
Just leave empty for use ircd default: "You are banned from this server"