Email Security Checked by Vezraa
Domain-based Message Authentication (DMARC)
A policy that tells receiving servers how to handle unauthenticated email.
DMARC builds on SPF and DKIM by defining a policy (none/quarantine/reject) for emails that fail authentication. Also provides reporting to monitor spoofing attempts. Start with p=none to monitor, then move to p=quarantine or p=reject.