How To Set Up Dmarc Policy

Setting up a DMARC policy is essential for protecting your email domain from phishing attacks and improving email deliverability. In this article, we will guide you through the process of setting up a DMARC policy step by step to ensure that your emails are authenticated and secure. Whether you’re new to DMARC or looking for best practices, we’ve got you covered with easy-to-follow instructions and expert advice. So, let’s dive in and learn how to set up a DMARC policy effectively.

In today’s digital landscape, where cyber threats continue to evolve rapidly, it’s crucial to have robust measures in place to safeguard your organization’s email communication. One such measure is implementing a Domain-based Message Authentication Reporting and Conformance (DMARC) policy. By setting up a DMARC policy correctly, you can protect your brand reputation while increasing the chances of your legitimate emails reaching recipients’ inboxes rather than ending up in spam folders.

To get started with setting up a DMARC policy, follow our comprehensive guide below which covers everything from understanding the basics of DMARC authentication to configuring DNS records and analyzing reports. With our step-by-step instructions and practical tips, you’ll be on track towards enhancing the security of your email domain while ensuring proper email delivery. So let’s jump right into it!

What is DMARC?

DMARC, which stands for Domain-based Message Authentication, Reporting, and Conformance, is an email authentication protocol that helps protect against phishing and email spoofing attacks. It allows domain owners to specify how their emails should be authenticated by recipients’ mail servers.

Here are some key points to understand about DMARC:

  1. Authentication: DMARC builds on existing email authentication methods like SPF (Sender Policy Framework) and DKIM (DomainKeys Identified Mail). These methods help verify the authenticity of the sender’s identity.

  2. Policy Enforcement: With DMARC, domain owners can define a policy for handling unauthenticated emails. They can choose to monitor or reject such messages based on their chosen level of strictness.

  3. Reporting: DMARC provides detailed reports that give visibility into who is sending emails using your domain name. These reports include information about message delivery failures and suspected fraudulent activity.

  4. Email Deliverability: Implementing a valid DMARC policy increases the chances of your legitimate emails reaching recipients’ inboxes while reducing the risk of malicious ones being delivered.

  5. Protects Brand Reputation: By preventing unauthorized use of your domain in phishing attempts, DMARC helps safeguard your brand reputation and maintain customer trust.

  6. Implementation Considerations: Setting up a proper DMARC configuration involves publishing DNS records with specific tags and values according to your desired policy settings.

  7. Gradual Implementation: Organizations often adopt a phased approach when implementing DMARC to ensure compatibility with existing systems without disrupting email flow during initial setup stages.

In conclusion, understanding what exactly DMAR

Why is DMARC important?

  • Prevents email spoofing: DMARC (Domain-based Message Authentication, Reporting, and Conformance) is crucial for preventing email spoofing. It helps ensure that only authorized senders can use your domain to send emails. By implementing DMARC, you protect your brand reputation and prevent phishing attacks.

  • Enhances email deliverability: With a well-configured DMARC policy, you increase the chances of your legitimate emails reaching the recipients’ inboxes. By specifying the authentication methods required for incoming messages, such as SPF (Sender Policy Framework) and DKIM (DomainKeys Identified Mail), you improve email deliverability rates.

  • Protects against phishing attacks: Phishing attacks are a significant concern for individuals and organizations alike. By deploying DMARC policies correctly, you reduce the risk of falling victim to these malicious acts. This reduces financial losses associated with fraud while safeguarding sensitive information from being compromised.

  • Provides visibility into unauthorized use of your domain: Implementing a robust DMARC policy allows you to gain insights into how your domain is being used across various mail servers worldwide. Through comprehensive reporting mechanisms provided by DMARC, you can identify sources attempting unauthorized usage or abuse of your domain name.

  • Maintains consistent branding: Email communication plays a vital role in maintaining brand consistency and trustworthiness among customers. By enforcing strict authentication protocols through DMARC policies, you ensure that only verified senders can represent your organization accurately via email communications.

In summary, implementing a proper DMARC policy is essential for protecting against email spoofing attempts and phishing attacks while ensuring optimal deliverability rates for legitimate emails sent from your domain. Additionally, it provides valuable insights into how your brand’s name is being utilized across different mail servers globally

Steps to Set Up DMARC Policy

Setting up a DMARC (Domain-based Message Authentication, Reporting, and Conformance) policy requires a few essential steps. Follow these instructions to ensure successful implementation:

  1. Understand the Basics

    • Familiarize yourself with the concepts of SPF (Sender Policy Framework) and DKIM (DomainKeys Identified Mail). These are prerequisite authentication methods for DMARC.
    • Ensure that your domain has already implemented SPF and DKIM.
  2. Create a DMARC Record

    • Access your DNS management system or contact your domain administrator.
    • Create a new TXT record for your domain. IN TXT "v=DMARC1; p=none; rua=mailto:[email protected]"
  3. Define Your DMARC Policy

    • The ‘p’ tag in the record determines how you want email receivers to handle emails that fail authentication:
      • none: Monitor mode only, no action is taken.
      • quarantine: Suspicious emails may be treated as spam or placed in quarantine folders.
      • reject: Failing emails should be rejected entirely.
  4. Specify Aggregate Report Recipients

    • Use the ‘rua’ tag in your DMARC record to define where aggregate reports should be sent: IN TXT "v=DMARC1; p=none; rua=mailto:[email protected]"
  5. Enable Email Reporting

    • Configure an email address where you will receive aggregated reports about email authentication results from participating receivers.
  6. Publish Your Updated Record

  • Save changes made within your DNS management system to publish the modified record.
  1. Monitor Reports Regularly
  • Continuously review aggregated reports received via email for insights into email authentication results, including any potential issues or unauthorized usage.

By following these steps, you can effectively set up a DMARC policy to safeguard your domain’s email deliverability and enhance security. Remember to periodically review and update your DMARC record as needed.


In conclusion, setting up a DMARC policy is an essential step in protecting your email domain from unauthorized use and preventing phishing attacks. By implementing DMARC, you can ensure that only legitimate emails are delivered to recipients, enhancing the security and trustworthiness of your organization’s email communications.

By following the steps outlined in this article, you can easily configure and deploy a DMARC policy for your domain. Remember to start with a “none” policy to monitor any potential issues before moving on to more stringent policies like “quarantine” or “reject”. Regularly monitoring the reports generated by your DMARC implementation will provide valuable insights into any authentication failures or suspicious activities.

With an effective DMARC policy in place, you can protect your brand reputation, safeguard sensitive information, and establish trust with your customers. Don’t wait until it’s too late – take action today and secure your email communications with DMARC!

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