You can cancel saving faxes to the computer by using the FAX Utility.
For details, see Basic Operations in the FAX Utility help (displayed on the main window).
If there are any faxes that have not been saved to the computer, you cannot cancel the feature that saves faxes on the computer.
You can also change the settings on the printer. Contact your administrator for information on canceling settings to save received faxes on the computer.