With the rise of cybercrime and email phishing attacks, it has become increasingly important for organizations to implement measures to protect their email domains from unauthorized access and fraudulent activity.
One such measure is DMARC (Domain-based Message Authentication, Reporting & Conformance). In this guide, we will explore DMARC in detail, including what it is, how it works, and how to implement it to protect your email domain from phishing attacks.
What is DMARC?
DMARC is an email authentication protocol that allows email domain owners to specify which mechanisms (SPF, DKIM) are authorized to send emails on their behalf and what actions should be taken for emails that fail authentication checks. The DMARC protocol provides a way for email receivers to verify that incoming emails are legitimate and not spoofed or phishing attempts.
How does DMARC work?
DMARC works by using two existing email authentication mechanisms: Sender Policy Framework (SPF) and DomainKeys Identified Mail (DKIM). SPF is an email authentication mechanism that allows domain owners to specify which IP addresses are authorized to send emails on behalf of their domain. DKIM is an email authentication mechanism that allows domain owners to attach a digital signature to their outgoing emails, which can be used to verify the authenticity of the email.
When an email is received, the receiving mail server performs an SPF record check and a DKIM check to verify the authenticity of the email. If the email fails either check, it is considered suspicious and may be rejected or marked as spam. The DMARC protocol adds an additional layer of protection by allowing the domain owner to specify what actions should be taken for emails that fail SPF or DKIM checker.
How to Implement DMARC?
To implement DMARC, you need to create a DMARC record and publish it in the DNS (Domain Name System) for your domain. The DMARC record specifies the email authentication mechanisms (SPF, DKIM) that are authorized to…
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