Behavior: A “null” DMARC policy is essentially a monitoring policy. It instructs receiving email servers not to take any specific action based on DMARC results. Instead, it allows you to collect DMARC reports for analysis without affecting email delivery.
DMARC record example:
v=DMARC1; p=none; rua=mailto:[email protected]; ruf=mailto:[email protected]
In each of these policies, DMARC also provides mechanisms to specify mobile phone number list what actions to take when emails pass DMARC authentication. The main focus of these policies is how to handle emails that fail DMARC checks.
It is important to note that the exact behavior of email servers can vary and not all email service providers fully enforce DMARC policies.
To ensure proper DMARC implementation and monitor its impact, it is essential to periodically review DMARC reports and adjust policy settings as needed.
Additionally, organizations can start with a “none” or “quarantine” policy and gradually move to a “reject” policy as they gain confidence in their email authentication practices.
There are additional DMARC tags, such as:
v= Version of DMARC used (DMARC1)
p= DMARC enforcement policy: none, quarantine, or reject
street= List of email addresses where DMARC aggregate reports are sent
pct= Percentage of messages that are subject to the enforcement policy. Default is pct=100
