I migrated an application that a previous web master created from IIS 6 to IIS 7.5. After migrating everything is working great except when users try to upload PDF's using the upload feature in the classic asp app. The user's can upload .doc and .docx just fine. I've checked the MIMI types on the server(s) and they all have .doc, .docx, .pdf, etc in the list.
Any ideas to why this isn't working would be great.