4.7.4 Email Bounce Error
Reason
User Authentication For Message Failed: Delayed Message
The email message has not yet been delivered because there was a problem with your user authentication to your email system
How to fix?
Review the email account settings. Check for options that require “user authentication” for outbound SMTP and ensure that the Username and Password values are correct.
If the account settings are correct, contact the email provider to help identify any misconfiguration with the sender’s account or with the email system.
4.7.4- 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.7.4
A message contained security features such as secure authentication that could not be supported on the delivery protocol. This is useful only as a permanent error.
5.7.4 Email Bounce Error
Reason
User Authentication For Message Failed: Message Not Delivered
The message could not be delivered because there was a problem with the sender’s user authentication to the sender’s email provider email system.
How to fix?
Review the email account settings. Check for options that require “user authentication” for outbound SMTP and ensure that the Username and Password values are correct.
If the account settings are correct, contact the email provider to help identify any misconfiguration with the sender’s account or with the email system.
5.7.4- 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.7.4
A message contained security features such as secure authentication that could not be supported on the delivery protocol. This is useful only as a permanent error.
