MAIL server not connected

Hi I have some problems getting my mail system up and running do not know if it is my DNS that is the problem. i am on where I have a vps as I have created cyber panel as my panel.
I have then come to the point where I do not know what is going wrong with my setup by mail.

my domain is at hostinger, and has pointed my domain to my ip.
And domain works fine, and the site running

Best regards