4.7.0 Email Bounce Error
Reason
Unknown Security Or Policy Concern: Delayed Message
The email message has not yet been delivered because the message has caused a security concern, but it is not clear what caused the problem.
How to fix?
Retry the email message see if it was a one-time problem or if the same error occurs. Otherwise, contact the sender’s email support team as the email system may have a security issue.
4.7.0- 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.7.0
Something related to security caused the message to be returned, and the problem cannot be well expressed with any of the other provided detail codes. This status code may also be used when the condition cannot be further described because of security policies in force.
5.7.0 Email Bounce Error
Reason
Unknown Security Or Policy Concern: Message Not Delivered
The message could not be delivered because the recipient’s email system is not accepting messages from this sender. Typically, this means that the receiving system has flagged either the individual sender or the sending mail servers for security concerns or for suspicion of spam related activity.
How to fix?
Retry your message to see if it was a one-time problem or if the same error occurs. If the same error occurs, contact your email support team as your computer or email system may have a security issue. This typically requires help-desk support.
5.7.0- 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.7.0
Something related to security caused the message to be returned, and the problem cannot be well expressed with any of the other provided detail codes. This status code may also be used when the condition cannot be further described because of security policies in force.
