Answer
GMS Communication Server or GMS List Server has just processed an email message that was returned due to an earlier posting. The message that was returned has come from an account that does is not a member of the list. Therefore no action has been taken.
In this case, the message (id Undefined) related to the list Undefined. There is no member with the email address Undefined.
This is the correct result, no action is required by you.
See Also:
Keywords:bad message list bounce returned 8217