There are mostly three reasons. In all these cases the
job is returned to the sender by e-mail with a message like
Your facsimile job to +123456789 was not sent because conversion
of PostScript to facsimile failed. The output from "bin/ps2fax" was:
bin/ps2fax: -q: not found
- You need a tool like Ghostscript to translate the
PostScript file to TIFF -- and you don't have this tool or it's not
in the place where bin/ps2fax searches for it.
- Your Ghostscript lacks the needed driver tiffg3; see the
makefiles of Ghostscript how to add a driver.
- Your Ghostscript doesn't support the -q option. In this
case you should update to a newer version.