checklink: Cannot access ASP files linked on webpage being checked

Hello,

In trying to run your Link checker on my webpage

   www.mcgoodwin.net/index.html


I am getting the error message that

http://www.mcgoodwin.net/sitemap.asp
    What to do: The link is forbidden! This needs fixing. Usual suspects: 
a missing index.html or Overview.html, or a missing ACL.
    Response status code: 403
    Response message: Forbidden
    Lines: 34, 39, 229, 230


In fact the page http://www.mcgoodwin.net/sitemap.asp is publicly 
accessible and my web hosting provider has confirmed that their server is 
correctly configured.  Could this be a bug in your program?  It also occurs 
with PHP files that return HTML.
Thank you

Michael McGoodwin