[Ripe-list-unmoderated] Mail delivery failed: returning message to sender

This message was created automatically by mail delivery software. A message that you sent could not be delivered to one or more of its recipients. This is a permanent error. The following address(es) failed: ripe-list@ripe.net Domain santoro.net.au has exceeded the max defers and failures per hour (5/5 (17%)) allowed. Message discarded.