I have new SBS 2008 Std (migrated from SBS 2003 Std).
I added today fax modem (USB). Now I can send faxes from the server (using that new Windows Fax and Scan progam). Working fine.
Now from XP PRO it does not work at all. I can install that shared network fax printer (thats ok). Also I can submit fax to that printer (no errors, both 32/64bit drivers are installed), it will do everything as it did with SBS 2003, expect SBS 2008 does not show at all that he got any fax from the XP client. That fax never arrives to the destination.
Fax client on the XP is showing the correct FAX printer and no error there. Just faxes never arrive (no log at all).