Answered How to Redirect all URLs that begin with "mydomain.com/?" to an error page

I've recently upgraded my website from Wordpress to MODX. In the old website, there would be numerous pages with URLs like:
http://www.quaverbox.com/?cat=1
http://www.quaverbox.com/?p=53

In the new MODX website, these pages no longer exist. I've set up an error page at http://www.quaverbox.com/sorry but none of the above URLs redirect to the error page. Only pages that don't contain the question mark (eg. http://www.quaverbox.com/oldpage) redirect to the error page.

The URLs with the question mark redirect to the homepage instead. Whilst this may seem like an acceptable outcome, in Google all these non-existent pages are now being indexed with the same meta description as my homepage causing some SEO problems.

How do I put a wildcard redirect so that anything beginning with "http://www.quaverbox.com/?" is also redirected to my error page? I've tried the Redirector package and amending .htaccess with no luck. Any suggestions?

That's a tough one. If those correspond to actual pages on the new site, it might be worth having multiple rewrite rules that convert them to the appropriate URL.
[ed. note: BobRay last edited this post 12 years, 4 months ago.]

Consider using something like Redirector (http://modx.com/extras/package/redirector) or the more hands on .htaccess approach.