How to make a HTTP/1.1 301 Moved Permanently

I’m maintaining a website that uses lots of URL Redirections rules (using Internet Site document), they are currently generating 302 status (moved temporarily), I want to change the status generated to 301 (moved permantely), so the site is ranked higher by Google etc.

I haven’t found a server setting or notes.ini parameter to allow me to change this.

I found this similar post, but there were no solutions

https://www-10.lotus.com/ldd/nd6forum.nsf/55c38d716d632d9b8525689b005ba1c0/03a811c1c5127e0885256fe30030c113?OpenDocument

Any suggestions or confirmation that this is not possible with Domino before I look at redesigning the site to not use URL Redirection document.

Thanks