I'm receiving "Delivery Status Notification (Failure)" and "Delivery Status Notification (Delay)" kickback messages for emails sent by forms to yahoo, juno, mail, and a few other domains. Messages sent to gmail and hotmail appear to go through without any problems.
Has anyone else experienced this? If so, what did you do? Was the issue on your end or with the receiving domains?
Does anyone have any ideas on how to solve it?
Thanks!
John