4.3.4 Email Bounce Error
Reason
Message Is Too Large: Delayed Message
The email message has not yet been delivered because the recipient’s email provider has a message size limit and the message is larger than what is allowed.
How to fix?
Check the body of the message for large amounts of text or for any large attachments. Try adjusting the text or reducing the size of attachments and resending. Otherwise, contact the sender’s email support team to see if they can help troubleshoot further.
4.3.4 – 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.3.4
The message is larger than per-message size limit. This limit may either be for physical or administrative reasons. This is useful only as a permanent error.
5.3.4 Email Bounce Error
Reason
Message Is Too Large: Message Not Delivered
The message could not be delivered because the recipient’s email provider has a message size limit and the message you sent is larger than what is allowed.
How to fix?
Check the body of the message for large amounts of text or for any large attachments. Try adjusting the text or reducing the size of attachments and resending. Otherwise, contact the sender’s email support team to see if they can help troubleshoot further.
5.3.4- 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.3.4
The message is larger than per-message size limit. This limit may either be for physical or administrative reasons. This is useful only as a permanent error.
