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How to set up SPF, DKIM, and DMARC for your sending domain

Set up SPF, DKIM, and DMARC for your sending domain, check a real message, and fix common DNS and alignment mistakes.

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One Email, Three Identities: SPF, DKIM and DMARC Explained

What DMARC Protects You From, and What It Does Not

DMARC has been public since 2012 but most company domains still don't enforce it