I just tried it on Ultimate and it sent all four pages to the print to fax. You have to click the arrow on the bottom of the .tif to see other pages.
I do have a problem sending multiple copies to a print servers, but it will send all pages.
You might check the Devices and Printers window and right click on Fax then select Properties in the middle of the list. Perhaps there is some setting there or in preferences, or settings to change.