Does anyone know of software that can run on a Linux (CentOS) web server that will take user uploaded material, convert it to TIFF-F and either return the converted TIFF-F file to the user or e-mail it as an attachment? It can be written in PHP, JAVA, RoR or Perl.
I'd recommend installing ImageMagick -- it's probably available through your package manager of choice. It comes with a myriad of command-line tools to process images. The one you want is
convert, which can be used to transform images (or any of it's other supported formats) via
convert $INPUT_IMAGE -monochrome -compress fax $OUTPUT_TIF
You can then take the output file and email it with any of the methods described in this question.