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DMARC سياسة DMARC

Definition

The policy layer on top of SPF and DKIM: a DNS record that tells receivers what to do when authentication fails — monitor only (p=none), quarantine to spam, or reject outright — and where to send aggregate reports. Start at p=none, read the reports, then tighten. Gmail and Yahoo now require DMARC from bulk senders.

Email Security
Last updated Aug 2026