By default the Internet Domain/DNS Inpsector's DMARC Quarantine/Reject Policy Validation metric is not enabled for display or change monitoring, or for use in any rule that is in a template. This means that a domain with a DMARC policy of p=none triggers only the dataprint value "dmarcQuarantineRejectPolicyCheck" to be "caution", rather than throwing an alert. Also of note the ideas portal has an example of a very nice spin on this metric: https://share.liongard.com/ideas/LCCL-I-895 Just as a thought, consider enabling this check or the similar metric from the ideas portal in something like the Cyber Risk Alert Template to alert at some priority for a DMARC record which is set to none, indicating that email spoofing may be possible.