. It will give you a nifty hashref in the header() for this kind of stuff. Also, you may want to look into the UNIX
command which has a special place in its heart for MIME types. If you're dealing with images ONLY (it doesn't look like it, though), you should use
which will cough up the MIME type for images. In any case, there is no need (and it's safer) to use a tried and true module of program (file) for your MIMEing needs.
Q: If Outlook automatically opens certain MIME types, and no one is around to see it, does the embedded virus remain dormant?