DMARC Enforcement for MSPs

How to actually move a client from p=none to enforced DMARC – rollout planning, third-party senders, transport security, and diagnosing a stalled rollout.

Building a Client Rollout PlanWhy p=none to p=reject is a staged rollout, not a switch you flip.Third-Party Senders and SPF SprawlEvery vendor a client's domain sends through is a rollout dependency you have to find first.MTA-STS and TLS-RPTA completely different threat model: not who sent it, but whether it was encrypted in transit.DNSSEC and DANEWhy every check in this course is only as trustworthy as the DNS it's read from.Diagnosing a Stalled RolloutThe handful of failure patterns that actually block enforcement, and how to tell them apart.

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10 questions, 80% to pass. You'll give your name and email once, right before you start it – that's the only thing this course ever asks for, and it's only used to issue your certificate.

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