[Mimedefang] use tiff2pdf with mimedefang

[Nick Coronado]

I want to use MIMEDefang to do the following:

Filter incoming email messages for  tiff attachments, and convert them
to pdf. If there is a tiff attachment then get the attachment, use the
program "tiff2pdf" to convert it to pdf, and then send it on its way. It
seems fairly straightforward, but I have no idea where to start. 

Any help would be really appreciated.