I have an extensive perl CGI application that runs on several platforms. One of my clients just upgraded to Microsoft IIS 6. I am using activestate Perl on the box, I can get to my registration page (a perl script), then when I enter the username and password and click submit (which posts to the same Perl script), I get a 403 error. In the windows server error log, it shows a 200 code for the original get, and a 403 for the subsequent post. I have checked the allowed verbs and they are set to get, head, post. If I change from using the Perl.exe to PerlIS.dll, I do not get a 403 error, I get a 200 message for a redirect to the member landing page (another perl script), but what shows in the browser (IE or Firefox) is the original login script page. So, Perl works if only doing a Get(which is not an option due to some extensive forms that have to be processed and I don't want usernames and passwords showing on the ends of URLS), I have problems with Posts, I have problems with Redirects (not going into detail on that yet as I hope whatever solves the post issue solves the redirect as well).
Any suggestions are appreciated, except those involving the client switch servers or OS as it is totally out of my hands.