4.1.6 Email Bounce Error
Reason
Email Address No Longer Accepts Or Forwards Messages: Delayed Message
The recipient’s email address no longer accepts email messages and so the email message has not yet been delivered (even though it did in the past).
How to fix?
Check the recipient’s email address for misspellings or missing letters. If an error is found, correct it in contacts list or address book for next time.
4.1.6 – 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.1.6
The mailbox address provided was at one time valid, but mail is no longer being accepted for that address. This code is only useful for permanent failures.
5.1.6 Email Bounce Error
Reason
Email Address No Longer Accepts Or Forwards Messages: Message Not Delivered
The recipient’s email address no longer accepts email messages and so the email message could not be delivered (even though it did in the past).
How to fix?
Check the recipient’s email address for misspellings or missing letters. If an error is found, correct it in contacts list or address book for next time.
5.1.6 – 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.1.6
The mailbox address provided was at one time valid, but mail is no longer being accepted for that address. This code is only useful for permanent failures.
