All of a sudden, without making any changes to my settings, my dynadot account is not receiving any emails, giving the sender the following message:
Technical details of permanent failure: Google tried to deliver your message, but it was rejected by the recipient domain. We recommend contacting the other email provider for further information about the cause of this error. The error that the other server returned was: 553 553 sorry, that domain isn't in my list of allowed rcpthosts (#5.7.1) (state 14).
Emailed dyandot without getting a response yet. Hope anyone out there knows what the problem is and how to solve it, and would like to share it with us. Thank you.