I don't think you have entered the right name for your local machine. In fact you have entered the local domain name linked to your machine.
To know your machine's name, open a terminal and enter what is after the "@" sign. You can also run the command cat /etc/hostname
from a terminal.
For me I have got aaugusti@DellAntoine
so I'll enter DellAntoine
as my local machine name.