Your domain's DMARC policy can be configured with different Policy Selectors, sometimes referred to as "Tags", Various tags are used to instruct remote email servers handle email from your domain name. You can start off by instructing remote email servers to ignore emails that fail DMARC authentication and proceed with their normal handling of email. Later, you can move a more strict policy which will instruct remote mail servers to quarantine emails that fail DMARC authentication and to move that email into the recipients junk mail or spam folder. Finally, you can instruct remote email recipient servers to completely reject a percentage or all emails that you have not implicitly authorized to send email on behalf of your domain's email addresses. The reject option being the most strict of all policies, caution should be used before moving to a reject policy.
DMARC None or Ignore
"p=noneignore"
In DMARC, there is no official "p=ignore" policy.
"p=none"
To adhere to the current DMARC1 specificationTechnical Specification, The correct syntax to use is "p=none".
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The "sp" tag stands for "Subdomain policy." It specifies the policy to be applied to subdomains that do not have their own DMARC record. It can have the same values as the "p" tag. For example:
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In summary, each DMARC policy tag offers varying levels of protection against email spoofing and phishing attacks. They allow domain owners to specify their desired DMARC policies, control enforcement actions, and receive reporting information to monitor and manage email authentication for their domain. Organizations should assess their email security needs, evaluate the potential impact on legitimate email delivery, and implement DMARC policies accordingly. By deploying a successful DMARC enforcement policy, organizations not only improve email security, but add trust and visibility to their brand.
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