I am receiving below messge from exchange.
Delivery is delayed to these recipients or groups:
This message hasn't been delivered yet. Delivery will continue to be attempted.
The server will keep trying to deliver this message for the next 1 days, 19 hours and 35 minutes. You'll be notified if the message can't be delivered by that time.
What do I need to check to make sure this email will go through or future email will go through to this domain.