DMARC: The Shield for Your Email Domain
DMARC (Domain-based Message Authentication, Reporting, and Conformance) is a powerful email authentication protocol that helps protect your domain from spoofing and phishing attacks. By implementing DMARC, you can significantly improve the security and deliverability of your emails.
How DMARC Works
DMARC leverages two other email authentication protocols, SPF (Sender Policy Framework) and DKIM (DomainKeys Identified Mail), to verify the authenticity of emails. Here’s a breakdown of the process:
SPF Verification: The receiving mail server checks the SPF record to determine if the sending server is authorized to send emails on behalf of the domain. DKIM Verification: The receiving server verifies the DKIM signature to confirm that the email hasn’t been tampered with during transit. DMARC Enforcement: If both SPF and DKIM checks pass, the email is likely legitimate. However, DMARC allows you to specify how the receiving server should handle emails that fail authentication. You can choose to: None: No specific action is taken. Quarantine: The email is quarantined for review. Reject: The email is rejected and not delivered. Benefits of Implementing DMARC