If there is a delivery error while sending an I-Fax, the mail server will send an error message back to the Brother machine and the error message will be printed.

If there is an error while receiving an I-Fax, an error message will be printed, for example, "The message being sent to the machine was not in a TIFF format."

To receive the error mail and have these printed on your machine, in [Setup Mail RX], switch the [Header] option to [All] or to [Subject+From+To].