No, DMARC is a protocol that relies only on the configuration of 3 types of DNS records:

1) DMARC record: declares the policy to be applied when validating emails received from your domain. And allows OnDMARC to start monitoring the sources of your email traffic.

2) SPF record: declares the list of IP addresses for the services that are allowed to send emails on behalf of your domain.

3) DKIM records: services sending emails on your behalf should sign these using DKIM and the public key for these signatures are hosted as DNS records.

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