X.7.2 Email Bounce Error [Mailing list expansion prohibited]

4.7.2 Email Bounce Error

Reason

Not Authorised To Send To Mailing List: Delayed Message

The email message has not yet been delivered because the recipient’s email provider has blocked your email address from posting messages to this mailing list.

How to fix?

If it seems unlikely that your email address has been blocked intentionally, try sending the message again in a while in case this is a temporary problem. Otherwise, contact the mailing list administrator.

4.7.2- 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.7.2

The sender is not authorised to send a message to the intended mailing list. This is useful only as a permanent error.

5.7.2 Email Bounce Error

Reason

Not Authorised To Send To Mailing List: Message Not Delivered

The message could not be delivered because the recipient’s email provider has blocked the sender’s email address from posting messages to this mailing list to which the message was addressed.

How to fix?

If it seems unlikely that your email address has been blocked intentionally, try sending the message again in a while in case this is a temporary problem. Otherwise, contact the mailing list administrator.

5.7.2- 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.7.2

The sender is not authorised to send a message to the intended mailing list. This is useful only as a permanent error.