server {
    listen 80 default_server;
    listen [::]:80 default_server;
    server_name _;
    root /dev/null;

    if ($host !~ ^(autoconfig.thelyoncompany.com|autodiscover.thelyoncompany.com|webmail.thelyoncompany.com|email.thelyoncompany.com|matrix.thelyoncompany.com|thelyoncompany.com)$ ) {
         return 444;
    }

    location / {
        return 301 https://host$request_uri;
    }
}