First of all I'd like to extend seasons greetings to all here "HAPPY NEW YEAR".

I'm not too sure if this should be filed under Infinity url re-write or general but from test[s] I think this is a general issue:

When a dnn page doesn't exist or expires and has been crawled by search spiders it seems the links redirect to its parent usually with a "200 OK status".

Examples can be seen "I apologize if this gets crawled so please remove link later" for all others just add your name with an aspx extension e.g. femi.aspx after any path on a DNN portal. http://www.dotnetnuke.com/Products/Pr...

Sadly I cannot attach fire-bug screen shot but this issue has greatly affected our rankings as I've set up a 404 on all our DNN sites which display fine when non asp.net handler is called i.e. img, txt etc extensions or where path doesn't exist in dnn.

Thanks in advance if anyone can shed some light on this issue.

So short term fix, would it be possible to either 

- add a  X-Robots-Tag "noindex, nofollow" on these phantom pages or the like to let search engines know not to index these pages.

- Throw a 404 error where tab doesn't exist in the re-write proccess. 

"just thinking aloud here".