412iCloud: Mail command failed: 550 5.7.0 From address is not one of your addresses

[AyrtonBrooke]

hi I managed to create a form submission before with a Gmail account on another website and now i want to create another using iCloud instead but i get this error.

[xr0master]

Most likely in your template you unchecked the "Use Default Email Address", maybe you should check it back.