Fill in the blank. A _____ is a permanent delivery error. By vmartinez Fill in the blank. A _____ is a permanent delivery error. sender reputation hard bounce soft bounce designated IP address A hard bounce is a permanent delivery error. Related content Related questions:Fill in the blank: _____ role is when you partner…Fill in the blank. A high delivery rate means ______.Fill in the blank: The user experience is _____.Fill in the blank: An attribution model is _____.