DMARC policy
Tell receiving mail systems how to handle messages that fail authentication.
What is it?
DMARC combines SPF and DKIM alignment with a policy such as none, quarantine, or reject.
Why is it important?
It provides visibility into senders using your domain and helps block spoofing and business email compromise.
How do you improve it?
Start with p=none and rua reporting, review sources, fix alignment, then progress to quarantine and reject.
How DomainShield Tower checks it
We inspect publicly available DNS, TLS, website, and reputation signals and explain the result in a report. Scanning is read-only and does not change your infrastructure.
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