server {
  listen 80;
  server_name roundcube.internal.simponic.xyz;

  location /.well-known/acme-challenge {
    root /var/www/letsencrypt;
    try_files $uri $uri/ =404;
  }

  location / {
    rewrite ^ https://roundcube.internal.simponic.xyz$request_uri? permanent;
  }
}