Domain-based Message Authentication, Reporting, and Conformance
Email remains one of the most commonly abused communication channels. Attackers regularly impersonate trusted organisations by sending messages that appear to originate from legitimate domains. These phishing and spoofing attacks are often difficult for recipients to recognize and can result in financial loss, credential theft and reputational damage.
DMARC (Domain-based Message Authentication, Reporting and Conformance) was designed to help organisations regain control over their domain identity. It enables domain owners to define how unauthenticated messages should be handled while providing valuable reporting data about who is sending email on their behalf.
Most organisations operate a far larger email ecosystem than they realize. In addition to Microsoft 365 or Google Workspace, email may also be sent by CRM systems, marketing platforms, support tools, HR applications and third-party suppliers.
DMARC provides visibility into all email that claims to originate from your domain. This allows you to:
Without reporting, organisations often have no reliable way to validate whether email authentication controls are working as intended or whether new sending sources have been introduced without oversight.
DMARC builds upon two established email authentication mechanisms:
DMARC evaluates the outcome of these authentication checks and compares them to the domain visible to the recipient. If authentication fails, the domain owner can specify how receiving organisations should handle the message.
At the same time, participating mail providers send reports back to the domain owner. These reports create visibility into authentication results, email traffic patterns and potential abuse of the domain.
Many organisations view DMARC as a deployment project. In reality, it is an ongoing operational process. Email environments continuously evolve as new cloud services, suppliers and business applications are introduced.
A configuration that was fully compliant six months ago may no longer reflect today's email landscape. New sending sources, DNS changes and infrastructure updates can introduce authentication failures or create opportunities for abuse without triggering obvious alerts.
Continuous monitoring helps ensure that authentication remains aligned with business requirements while new risks are identified before they become incidents.
DMARC reports contain valuable information, but they were originally designed for machines rather than people. The raw data is often difficult to interpret and rarely provides the visibility that organisations need to make informed decisions.
MailReport transforms complex DMARC reports into clear and actionable insights. With MailReport you can:
By translating technical authentication data into operational insight, MailReport helps organisations move towards stronger DMARC enforcement with confidence while maintaining visibility into a constantly changing email environment.