[GarGamel55]

Yes, I know this

I tried this (in ispconfig.vhost)

<IfModule mod_rewrite.c>
  <IfModule mod_ssl.c>
    <Location />
      RewriteEngine on
      RewriteCond %{HTTPS} !^on$ [NC]
      RewriteCond %{SERVER_PORT}  ^50443$
      RewriteRule . https://%{HTTP_HOST}:50443%{REQUEST_URI}  [L]
    </Location>
  </IfModule>
</IfModule>

but it doesn't work

An idea ?