Open source, linux, fax server… Heard about this software for Linux called Hylafax.  Version hylafax-6.0.6-1 is up for Red Hat/CentOS 6 for both x86 and x86_64.  So, I’m going to give it a shot with CentOS 7 and see how it goes… gonna have to dig my 56k Fax/Modem out of the garage first.

The link for future reference:

http://www.hylafax.org/content/Red_Hat_Packages

Some instructions for setting it up with Debian… maybe some of the config steps will be the same on CentOS

http://www.aboutdebian.com/fax.htm