Packages with the fax use flag

mail-mta / courier : An MTA designed specifically for maildirs

  • Enables fax support in the courier mail server

net-dialup / mgetty : fax and voice modem programs

  • Enables fax support

net-print / hplip : HP Linux Imaging and Printing - Print, scan, fax drivers and service tools

  • Enable fax on multifunction devices which support it