A message has arrived at an account that has been marked as “moved” so a failure response has been returned providing the address that the user has moved to. Note: in the case of a "moved" account, no other options are available (e.g. deliver to mailbox, forwards, robot, etc.).
In this particular case session Undefined was receiving an email from IP address Undefined. The email was apparently from Undefined to Undefined. GMS has indicated that the address that the message should be sent to is Undefined.
This is the correct result, no action is required by you.