> I there i'm looking for the script do_fax. > Can somebody tell me where I can find it? Itīs called new_fax and is located in /usr/local/lib/mgetty+sendfax. Or just do a "locate newfax". There have a look into README. Itīs exactly what you want: Preprocess incoming Faxes. (In dependancy to senderīs fax-nr)