4.4.7 Email Bounce Error
Reason
Message Expired Before Delivery Completed: Delayed Message
The email message has not yet been delivered because the message was considered too old by the receiving system. It may have been delayed while being processed.
How to fix?
Double check the recipient’s email address to make sure it is correct and attempt to resend the message
4.4.7- Official definition from ITEF
For the code that starts from 4.X.X
A persistent transient failure is one in which the message as sent is valid, but persistence of some temporary condition has caused abandonment or delay of attempts to send the message. If this code accompanies a delivery failure report, sending in the future may be successful.
For the code that starts from X.4.7
The message was considered too old by the rejecting system, either because it remained on that host too long or because the time-to-live value specified by the sender of the message was exceeded. If possible, the code for the actual problem found when delivery was attempted should be returned rather than this code.
5.4.7 Email Bounce Error
Reason
Message Expired Before Delivery Completed: Message Not Delivered
The message could not be delivered because the message was considered too old by the receiving system. It may have been delayed while being processed.
How to fix?
Double check the recipient’s email address to make sure it is correct and attempt to resend the message
5.4.7- Official definition from ITEF
For the code that starts from 5.X.X
A permanent failure is one which is not likely to be resolved by resending the message in the current form. Some change to the message or the destination must be made for successful delivery.
For the code that starts from X.4.7
The message was considered too old by the rejecting system, either because it remained on that host too long or because the time-to-live value specified by the sender of the message was exceeded. If possible, the code for the actual problem found when delivery was attempted should be returned rather than this code.