I´ve it work on SME before... just a couple of years ago.
I´d love to help... but so you must enable me to access your server... using TeamViewer or SSH direct.
I loved faxes... but now have seen a few places where it works and it´s necessary.
If you still have problems, let me know... we can try to TeamViewer togheter and fix it.
Regards,
Jáder