DMARC Policy explanation and what policies should I opt for?
DMARC has three policies having their own perks. The outcomes of the same depend on SPF and DKIM policies. Below is a brief explanation of all the policies.
NONE -
This is also known as a Monitoring only policy as it helps you gain deep insight into your email channel. This policy will not affect the email deliverability and will allow all emails to reach the recipient’s inbox, no matter whether it fails or passes the DMARC authentication.
QUARANTINE -
The quarantine policy (p=quarantine) instructs the ISPs to redirect emails failing the DMARC authentication to the recipient’s spam folder. Emails passing the DMARC authentication will be successfully delivered to the recipient’s primary inbox.
REJECT -
The reject policy (p=reject) instructs the ISPs to not deliver emails failing the DMARC authentication at all. Emails passing the DMARC authentication will be successfully delivered to the recipient’s primary inbox.
Now, if you are just starting out with KDMARC, it’s better to start with monitoring policy for a better understanding. You can assess your authorized sources, set up SPF and DKIM accordingly for the legitimate sources. Once done, you can later shift to Quarantine or Reject policy depending on your requirement.
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