Tutorial DMARC Policy Not Enabled

[DevOps]

_dmarc.example.com.        TXT        v=DMARC1; p=none

Quarantine/reject policies can be configured if required. These policies request more aggressive protective actions by receivers and should be configured with care.
You might find more information about the policies at the following FAQ from DMARC.
Note that this is part of administrative tasks from the server and that it should be handled by the administrator of it.