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  • DMARC-Reports verstehen und wirklich nutzen

Understanding DMARC Reports and Making the Most of Them

Stefan Feist | Technischer Redakteur
Author: Stefan FeistTechnical Writerhttps://www.linkedin.com/in/stefan-feist-23b257b0/–Connect on LinkedIn

DMARC reports show what happened. NoSpamProxy 25Reports helps you understand why it happened and what you should do next. With visualized context, automated analysis, and concrete recommendations for action, complex DMARC data becomes a clear basis for decision-making. We’ll show you why 25Reports is indispensable if you need concrete recommendations for your DMARC configuration to identify risks and protect your email communications in a controlled manner.

31.07.2026|Last edited:31.07.2026

More Than Just Information

DMARC reports contain valuable information about email communication through your domain. At the same time, they are among the data sources that are not always easy to interpret, even for experienced administrators. While individual metrics show whether SPF, DKIM, or DMARC were successful, they rarely explain why a problem occurs and what actions should be taken as a result.

This is exactly where NoSpamProxy 25Reports comes in. Instead of simply providing reports and dashboards, 25Reports helps you understand the relationships between DMARC, SPF, and DKIM, correctly interpret anomalies, and derive concrete recommendations for action.

Technical Data Made Easy to Understand

A key challenge in analyzing DMARC reports is identifying the cause of authentication issues. While DMARC reports provide the necessary information, the relationships between the individual checks are not always obvious.

That’s why 25Reports visualizes the relationships between DMARC, SPF, and DKIM in a dependency diagram. This diagram shows at a glance how the individual check results are related and what conditions must be met for a message to be DMARC-compliant.

25Reports Dependency Diagram

25Reports visualizes the relationships between DMARC, SPF, and DKIM

This reveals the following:

  • DMARC is considered to have passed if either SPF or DKIM is successful.
  • SPF, in the context of a DMARC check, requires both successful authentication and successful alignment.
  • DKIM also requires successful authentication and alignment as part of a DMARC check.
  • Colors help you immediately identify which tests were successful and which failed.

Instead of manually analyzing numerous technical fields, administrators can immediately identify where authentication is failing.

Understanding Technical Details

If you want to delve deeper into the analysis, you can use the other tabs:

  • The Evaluation tab summarizes the analysis of the sender and displays recommended actions. The recommendations take into account both the technical test results and whether your organization uses the service.
  • The SPF tab displays the relevant “From” header and “MAIL FROM” domains and explains why an SPF check passed or failed. It also shows whether the alignment requirements were met.
  • The DKIM tab displays the DKIM domains and selectors being used and explains how they are factored into the authentication and alignment assessments.
  • On the IP Details tab, you’ll find information to help you identify shipping sources and associated organizations.
  • On the Reporter tab, you can find information that helps you identify which organizations submitted the respective DMARC reports.
25Reports Recommended Actions

Next steps include specific recommendations for resolving the identified issues and optimizing the SPF, DKIM, or DMARC configuration.

This transforms a single test result into a clear cause-and-effect analysis.

Automatic Interpretation of Results

However, technical data alone does not answer the most important question: Is a detected sender a legitimate service, or is it a case that should be investigated?

NoSpamProxy 25Reports automatically analyzes the sending source and generates an initial assessment. This provides administrators with an evaluation of whether the sender is likely to be authorized or whether there are any anomalies that should be investigated further.

In addition, senders are classified based on their status. For example, this makes it possible to determine whether a sending source is already authorized in the SPF record, has been only partially authorized, or is not included in the SPF record at all. Even known and intentionally accepted relay services can be marked as “Ignored” to simplify daily analysis.

From Analysis to Recommendations for Action

However, the real value of DMARC reports lies not in displaying data, but in providing concrete guidance in the form of actions that should be taken based on the analysis results.

Many tools merely indicate that SPF, DKIM, or DMARC have failed. The responsibility for interpreting these results then falls entirely on the administrator, who must determine whether an anomaly is critical, identify its underlying cause, and decide on an appropriate course of action.

25Reports takes a different approach. The application analyzes the technical information from the DMARC reports, evaluates the identified sending source, and combines these insights with the user’s knowledge of their own email infrastructure. This creates a significantly more solid foundation for decision-making.

A typical example is external email services. From a technical standpoint, a service may appear entirely legitimate: Messages are delivered successfully, DKIM checks are passed, and the infrastructure belongs to a well-known provider. Nevertheless, it may be a service that was never authorized by the organization. Conversely, a service that is actually in use may temporarily experience configuration issues and therefore appear suspicious. This distinction cannot be reliably identified based on technical data alone.

Your input is important

That’s why 25Reports specifically asks for your input. Knowing whether a detected service is actually used by your organization provides the technical analysis with the crucial business context. Only then can recommendations be made that are tailored to your actual situation.

25Reports Your Input

The answer to this question complements technical analysis with your organization’s expertise.

Based on this, 25Reports develops specific, situation-based recommendations for action. Depending on the results of the analysis, these may, for example, aim to

  • optimize SPF or DKIM configurations,

  • resolve alignment issues,

  • improve DMARC compliance,

  • correctly integrate new shipping platforms,

  • investigate unknown shipping sources more closely,

  • identify forwarding scenarios or

  • evaluate potentially unauthorized senders.

While 25Reports does not make the decision for the administrator, it does make the process significantly easier. Instead of having to formulate a hypothesis themselves based on a multitude of individual technical details, users receive a clear interpretation of the data and concrete suggestions for the next steps.

This is precisely where the difference lies between a traditional reporting tool and 25Reports: The application not only shows what’s in the DMARC reports, but also helps you understand what the information means and what actions can be taken as a result, always tailored to the identified issues. There’s no longer any need to painstakingly read pages of documentation about how SPF, DKIM, and DMARC work.

Staying on Top of Things

In addition to analyzing individual sending sources, 25Reports also helps you keep track of a domain’s overall status.

The overview of overall DMARC compliance shows how many messages meet DMARC requirements and how compliance has changed over time. This allows administrators to identify trends and immediately see the impact of changes.

In addition, 25Reports rates a domain’s configuration on a scale from A to F. The rating takes into account the existing DMARC, SPF, and DKIM configurations and highlights areas where there is still room for improvement. This allows you to specifically enhance your domain’s protection against threats such as spoofing.

Conclusion

DMARC reports provide the data; 25Reports provides the context.

The dependency diagram clearly visualizes technical relationships. Detailed views help you understand the root causes. The automated analysis supports the evaluation of sending sources, and intelligent recommendations highlight specific next steps.

This transforms data and information into a clear basis for decision-making, enabling you to improve your email authentication in a targeted manner. In this way, you protect your digital sender identity, reduce fraud risks, and ensure the deliverability of business-critical emails.

To ensure your email communications are secure and run smoothly: With our practical guide and 25Reports, you’ll be fully prepared.

Download our free practical guide now, featuring step-by-step instructions on “SPF, DKIM, and DMARC.” With our DMARC monitoring tool, NoSpamProxy 25Reports, DMARC is finally easy. The service handles all your DMARC monitoring for you—automated, presented in graphical form, and GDPR-compliant. Try it free for 30 days now!

Download the practical guide Get your free NoSpamProxy 25Reports trial
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