DMARC can be configured with different options in regards to the policy. By implementing a policy, you're telling mail servers all around the world how to handle unauthorized use of your domain's email addresses. You could strictly monitor email traffic, quarantine email traffic to be on the safe side, or completely reject all unauthorized messages.
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In summary, each DMARC policy—None/Ignore, Quarantine, and Reject—offers varying levels of protection against email spoofing and phishing attacks. Organizations should assess their security needs, evaluate the potential impact on legitimate email delivery, and implement DMARC policies accordingly to enhance email security effectively.Not sure how to implement DMARC for your domain? The GlowHost team will do it for you with Managed DMARC Services!