DMARC (Domain-based Message Authentication, Reporting & Conformance) is an email authentication protocol that allows domain owners to protect their domain from unauthorized use, also known as email spoofing. It is built on top of two existing mechanisms, SPF (Sender Policy Framework) and DKIM (DomainKeys Identified Mail), and allows a domain owner to publish a policy in their DNS records that specifies which mechanism (SPF, DKIM or both) is used for email messages sent from their domain and what to do if neither of them passes.
Monitoring DMARC records is important because it allows domain owners to detect and prevent unauthorized use of their domain in email messages, also known as email spoofing. Email spoofing is a common tactic used by cybercriminals to conduct phishing and other malicious activities. By monitoring DMARC records, domain owners can detect any unauthorized use of their domain and take action to prevent it.
Another important aspect of DMARC monitoring is that it allows domain owners to receive detailed reports on the handling of their emails. These reports provide valuable information on how recipients are handling the DMARC policy, which can be used to improve email deliverability and detect any issues with the SPF or DKIM records.
In summary, monitoring DMARC records is important because it allows domain owners to detect and prevent email spoofing, improve email deliverability and detect any issues with the SPF or DKIM records. Additionally, it allows domain owners to ensure that their domain is only used for legitimate purposes, which helps to maintain the integrity of the email ecosystem and protect recipients from phishing and other malicious activities.
Required for HIPAA, FedRAMP, PCI, SOC2, and FISMA compliance.
Key DMARC items:
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