404 Error - File or Directory not found

Hi there

I have a simple CF page set to do a dump of the server only at this stage.

<cfdump var="#server#">

It works fine when I'm on the server itself and run from 127.0.0.1/mydomain/index.cfm

When I try to run from www.mydomain.com - I get a 404 file or directory not found

Is this a CF error or is this an error being thrown up from IIS

How do I get around this error ?

Thanks in advance.

Kind regards