Hi There, How can we extend the document upload allowed mime types to include docx, xls,xlsx, zip and .exe files? Thanks Andi

I have read the posts about why you don't provide contenttype, and how the developer should rely on filename extensions, however, some of my users will be uploading a variety of files from Macs. I can't rely on them having file extensions.  Is there away I can derive the contenttype from their uploaded files (other than checking ...