4.1.4 Email Bounce Error
Reason
Multiple Mailboxes For Recipient: Delayed Message
The recipient’s email address belongs to more than one email inbox and their email provider is confused which one to use and so email message has not yet been delivered.
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. If necessary, contact the recipient another way to confirm their email address.
4.1.4 – 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.1.4
The mailbox address as specified matches one or more recipients on the destination system. This may result if a heuristic address mapping algorithm is used to map the specified address to a local mailbox name.
5.1.4 Email Bounce Error
Reason
Multiple Mailboxes For Recipient: Message Not Delivered
The recipient’s email address belongs to more than one email inbox and their email provider is confused which one to use and so email message could not be delivered.
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. If necessary, contact the recipient another way to confirm their email address.
5.1.4 – 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.1.4
The mailbox address as specified matches one or more recipients on the destination system. This may result if a heuristic address mapping algorithm is used to map the specified address to a local mailbox name.
