Canada Post says it can't deliver mail to an Ottawa woman because her doorstep is 10 centimeters too high. Christine Charbonneau says she found a post office worker measuring her doorstep one day. He found it to be 30 centimeters high, 10 more than standards permit. Canada Post says she must reduce the size of the step to 20 centimeters or move her mailbox or it will cut off delivery. Charbonneau says her elderly mother-in-law and other delivery people regularly use the doorstep without any problem.