server {

    listen 443; # default_server doesn't work
    server_name mail.mailiverse.com;

    ssl on;
    ssl_certificate /etc/nginx/conf.d/nginx-ssl.crt;
    ssl_certificate_key /etc/nginx/conf.d/nginx-ssl.key;
    ssl_session_cache shared:SSL:10m;

    location / {

        proxy_pass http://192.168.2.1:8080; # my existing apache instance
        proxy_set_header Host $host;

        # re-write redirects to http as to https, example: /home
        proxy_redirect http:// https://;
    }
}