Answer
GMS Communication Server or GMS List Server has just processed an email message that was returned due to an earlier posting. The member’s bad message count has been increased. When it exceeds the maximum number of bad messages for this list, the user will be removed or suspended.
In this case, the message (id Undefined) related to the list Undefined. The member Undefined has had their bad message count increased to Undefined. When it reaches Undefined they will be automatically removed or suspended.
This is the correct result, no action is required by you.
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Keywords:bad message list bounce return removed suspended 8214