Currently we are moving a website from an old asp system to DNN. It is very large, and we have already setup a bunch of 301 redirects, but i know we didnt catch them all. Basically we will run the new website and the old site with different subdomains temporarily while we catch all of the exceptions once we go live.

So my question is, if at anytime i get a url that is sent to my new DNN site but it doesnt exist, I want to basically display a 404 page to them. The kicker is that on this 404 page, i want to show the bad "requested url" to the user with the different subdomain pointed at the old website. This is so they have the choice to navigate to the old website, just in case they need to see that old content.

I also want to Track each one of these bad url requests so that i can give them to our content admins so that they can make the decision on how to handle the bad urls for the future.

Anyone have any suggestions on how i do this within a DNN 7.2.1 install?

Thanks.