DNS secure only issue

Hi,
I have set all my DNS forward lookup zones to Dynamic secure only but I can still add insecure records using some vulnerability security tools.
What else would I need to check if I want to stop non secure records from being added?
Many thanks
I have set all my DNS forward lookup zones to Dynamic secure only but I can still add insecure records using some vulnerability security tools.
What else would I need to check if I want to stop non secure records from being added?
Many thanks