Answer
GMS Communication Server has sent a digest of all the previous messages to a member of the list. This digest was in the format of a list of all the subjects of messages. List members can choose the format of the digest message from Text, Index or MIME encoded.
In this case, member Undefined of list Undefined received the digest message.
This is the correct result, no action is required by you.
See Also:
Keywords:digest 8319