LogLevel ERROR

Host github.com
    Hostname ssh.github.com
    Port 443

Host *
    User lizz
    ForwardAgent yes
    ServerAliveInterval 60
    ServerAliveCountMax 10

Host jumper
    HostName jumper.jumper.com

Host server
    HostName 1.2.3.4
    ProxyCommand sshpass -e -y ssh -q -W %h:%p jumper