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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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Don't have the time or energy to learn, setup, monitor and maintain DMARC? What if you had a team of DMARC experts to do this for you?
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