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DMARC Overview

Author: Nate Schmitt, Director of Cybersecurity & vCISO, January 2024

Implementing DMARC (Domain-based Message Authentication, Reporting & Conformance) is an invaluable strategy for businesses aiming to enhance their email security and maintain the trust of their customers.

Customer trust

Benefits of Implementing DMARC

  1. Enhanced Email Security: DMARC helps authenticate emails, ensuring that the sender’s domain legitimate. This significantly reduces the chances of email spoofing and phishing attacks.
  2. Protection Against Business Impersonation: By verifying that emails are genuine, DMARC protects a business’s brand identity, preventing attackers from impersonating the business in emails to customers.
  3. Building Customer Trust: When customers are aware that a business uses DMARC, their confidence in the authenticity of emails from that business increases, fostering a stronger trust relationship. Additionally, major providers such as a Google and Yahoo have announced that they will begin enforcing DMARC compliance to minimize spam.
  4. Compliance with Security Standards: Implementing DMARC can help businesses comply with various industry standards and regulations, which often mandate robust security measures including email authentication protocols.
  5. Insurance Requirements: Many insurance carriers are beginning to require further adoption of

Challenges and Considerations in DMARC Implementation

While DMARC offers substantial benefits, certain challenges need to be navigated for its successful implementation:

1. Continuous Monitoring and Adjustment:

  • Regularly reviewing DMARC reports to adapt to new email trends and potential threats.
  • Updating DMARC policies as needed to maintain a high level of email security.

2. Vendor Management and Compliance:

  • Ensuring all third-party vendors who send emails on behalf of the business comply with the DMARC policy.
  • Regular communication and coordination with vendors to maintain alignment with DMARC settings.

3. Internal Coordination:

  • Keeping open lines of communication between IT staff and other departments to ensure any new email services or changes are DMARC compliant.
  • Training staff to understand the importance and role of DMARC in the organization’s email security strategy.


Implementing DMARC is important for businesses seeking to strengthen their email security and maintain a strong relationship of trust with customers. While challenges exist, such as the need for continual monitoring, vendor management, and internal communications exist, they are manageable and well worth the effort considering the protection and peace of mind DMARC provides.

CIT has assisted customers of all industries implement and maintain DMARC compliance. Contact CIT today to learn more about DMARC, and how we can ensure you’re prepared for the latest requirements.

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