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Though they are often confused, there is a difference between a None policy and Ignore policy in DMARC. Each has a different implication and purpose:use-case.
The "p=none" policy within DMARCÂ instructs receiving email servers to take no action based on the DMARC policy. It means that the DMARC policy is set to monitor and report mode only. Emails that fail DMARC authentication are not subjected to any specific enforcement actions such as quarantining or rejecting. Instead, domain owners receive aggregate (RUA) and forensic (RUF) reports about email authentication results. This policy is typically used for monitoring and analysis purposes during the initial deployment or testing phase of DMARC implementation.
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In summary, "p=none" is an official DMARC policy setting that instructs receiving servers to take no action based on the DMARC policy, whereas "p=ignore" is not an official DMARC policy and may refer to situations where the DMARC policy is not effectively enforced, or is being verbally discussed for various reasons.
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