Email Security Guide DMARC Checks Tools

Email Security Guide DMARC Checks Tools
Published in : 07 Dec 2023

Email Security Guide DMARC Checks Tools

Discover how to verify the legitimacy and safety of your emails using a swift DMARC Check in our guide, along with information on the different DMARC Checkers at your disposal.

Understanding DMARC Checks and Their Significance

Companies must ensure clients and associates are receiving their critical emails. DMARC-Checkers are the perfect tool to verify the legitimacy and safety of email domains and emails.

These tools verify DMARC (Domain-based Message Authentication Reporting and Conformance), SPF (Sender Policy Framework), and DKIM (Domain Keys Identified Mail) inputs, thereby confirming the legitimacy of your emails. DMARC serves to unify SPF and DKIM into one structure, managing your email flow based on established guidelines. Below are the three primary roles of DMARC:

  1. Refuse: Your emails are being rejected by the recipient server due to a DMARC test failure.
  2. Quarantine: Recipient addresses shift emails that lack a DMARC test to their Spam folder for examination.
  3. No action: When a DMRC test is not present, the sender side does not carry out any action.

Set the parameters for what happens when the security check doesn't pass in your DMARC (Domain-based Message Authentication, Reporting, and Conformance) record, also known as a TXT record. This TXT record is publicized in the Domain Name System for DMARC validation. Within your DMARC entry, you can dictate if servers receiving your emails should reject those that aren't authenticated.

You can also determine the methods and circumstances under which you would like to be alerted in case of domain misuse or errors in DMARC. Utilizing the integrated DMARC verification, daily updates about your email traffic are provided to you, encompassing the following details:

  1. What percentage of emails undergo the DMARC check?
  2. What is the number of emails that recipient servers reject?
  3. III. To which servers or applications are emails that have been rejected dispatched?
  4. Which applications or servers transmit emails that are either similar or linked to your domain?

Consequences of Incorrect DMARC Configuration

Cybercriminals primarily focus on the email exchanges between businesses and their customers or partners. One common trick they employ is spoofing techniques to imitate genuine emails. Typically, these deceptive practices involve the use of phishing emails.

Cybercriminals engaging in phishing often mimic your email domain or professional email address to extract data from the recipients. This is effectively countered by accurate DMARC entries, preventing phishing emails or spam campaigns from landing in recipients' inboxes or ensuring their swift blockage.

Consequences of Incorrect DMARC Configuration

For optimal email security, it is crucial to properly set up DMARC entries and utilize secure passwords and SSL for your domains. Seeing a DMARC Failed notification in a DMARC report could be due to various reasons.

  1. Due to inappropriate usage like spam activities, your email domain has been placed on the blacklist.
  2. Someone has pilfered your login information and used your domain to distribute damaging emails.
  3. III. The DMARC setup was improperly configured.

The second scenario might be an incorrect DMARC sync mode, a lack of DKIM signature, or absent DNS-TXT entries. If there's no particular risk associated with wrongly setting up DMARC directives, you can swiftly rectify DMARC error notifications using the right DMARC Checker.

Options for DMARC Checking Tools

Several tools are available to manage your DMARC settings, each offering different levels of analysis, monitoring, and reporting. The depth and thoroughness of the required analysis determines the most appropriate DMARC-Checker for you.

DMARC Checking Tools

DMARC's complex and fully integrated tools offer simultaneous service to multiple domains and complete automation of testing and analysis. However, these tools assume a user's DMARC processing, configuration, and analysis knowledge. For a quick snapshot of email security status utilizing best practices, simpler DMARC checkers are also available.

For instance, the following three tools can be accessed:


Established in 2012, Dmarcian is a widely recognized SAAS provider of DMARC services. Its high popularity can be attributed to its founder, Tim Draegen, who is also a co-developer of the DMARC standard. This connection gives Dmarcian a reputation for being severe and professional in its operations.

Dmarcian provides an extensive range of DMARC analysis tools that cater to small-scale and large-scale email monitoring needs. These tools are equipped with intricate analysis specifications for handling large volumes of email data. Despite its complexity, Dmarcian ensures reliable support and offers a variety of pricing options. However, its complexity might be overwhelming for smaller businesses or teams who need to perform DMARC checks.

Dmarcian, in addition to its professional DMARC management platforms, provides complimentary DMARC check tools. These tools can be accessed anytime and do not require a Dmarcian account or subscription. The following are included:

  1. Domain Verifier: Evaluate your personal or external domain for SPF DKIM DMARC configurations.
  2. DMARC Monitor: Tracks your domain or an external one along with its relevant DMARC entries.
  3. DMARC Configuration Assistant: Facilitates the setup of your DMARC entries.
  4. SPF Analyst: Offers a visual representation and diagnostic examination of SPF entries.
  5. DKIM Evaluator: A tool to diagnose DKIM entries.
  6. DKIM Certification Tool: A diagnostic instrument employed to authenticate your DKIM entries.
  7. XML-to-Human Translator: Transforms DMARC records into a format that's straightforward to read, making report analysis more manageable.

DMARC Digests

Established in 2020, DMARC Digests is a commercial DMARC service that has distinguished itself from the competition. Its distinctive feature combines a user-friendly interface and powerful DMARC features.

This service is ideal for small businesses needing to swiftly verify the DMARC integrity of a moderate volume of emails and only require comprehensive scans as needed. Nonetheless, lacking functionalities like forensic DMARC scans, alerts, or API interfaces could hinder user-friendliness.

DMARC Digests provide the following features:

  1. Keeping track of email actions and dispatching updates within your email domain.
  2. Investigating and deciphering DMARC errors, examining emails that lack authentication, and scrutinizing SPF DKIM problems.
  3. Problem resolution and suggestion of solutions through automation.
  4. A comprehensive review of all email senders and servers within your domain over 60 days.
  5. Bug reports on a weekly and monthly basis, along with suggestions for enhancing DMARC setups.
  6. Features of the Team for DMARC Analysis


MxToolbox is a provider of DNS and email verification, blacklist advice, and secure email-sending tools. It includes both free and premium tools for scrutinizing DMARC DKIM SPF entries. MxToolbox extends the following services for complimentary DMARC Checks.

1. DMARC Record Examination: This diagnostic device presents the DMARC record of your domain or an external one, accompanied by supplementary analytical information about the DMARC status.

2. DMARC Creator: This utility aids you in crafting and setting up your DMARC entries, utilizing a simple, beginner-friendly sequence of steps.

3. DMARC Report Interpreter: Transforms complex DMARC XML reports into a user-friendly format, making it easier to assess and amend the TXT records of your DMARC rules.

4. SPF Record Inspection: Showcases the SPF records for a specific domain along with related diagnostic information.

5. SPF Record Maker: Assists in the formation and modification of SPF records.

6. DKIM Analysis & Verification Tool: Evaluates DKIM entries and presents relevant analytical data.

Advantages of Email Testing Tools and DMARC

Cybercriminals often target email communication between businesses and their clients or associates. Thus, enhancing your domain's email traffic security through explicit scrutiny and ongoing surveillance can boost your safety and that of your partners and intended audiences. Additionally, this practice guarantees that crucial professional and marketing emails are delivered to the appropriate inbox instead of being misdirected to the spam folder.

The advantages associated with DMARC and email checks are:

  1. Mistakes made during email transmission are promptly identified and corrected.
  2. Efforts are maximized to safeguard email correspondence between businesses, partners, and clients from spam and identity theft.
  3. Quick corrections of DMARC/SPF/DKIM entries are facilitated by scan reports.
  4. The integrity and reliability of the email domain for marketing campaigns can be confirmed through pre-screening.
  5. You will be aware if crucial emails do not reach the recipients' inboxes but land in their spam folders instead.
  6. Emails that are dependable, secure, and verified enhance the perception of the brand and foster trust among partners and customers.

Exploring the Process of Manual DMARC Testing

Do you not need to be more interested in utilizing extra DMARC tools? You can still conduct manual, albeit limited, tests on DMARC. Nonetheless, the solutions mentioned above offer DMARC Checks that are more secure, efficient, and automated, per the SAAS principle, through expert DMARC tools and service providers.

We provide a guide on manually conducting a DMARC test by analyzing the email header. Instructions are provided for Gmail, Apple Mail, Outlook, Mozilla, and Opera.


The following instance pertains to a DMARC evaluation for content on Gmail. Google holds the upper hand as it can verify the authenticity and precision of DMARC through the costless Messageheader tool available in Google Toolbox. This procedure contrasts with other email services like Apple Mail, Mozilla, Hotmail, or Outlook.

  1. Either send an email to your Gmail account or inspect an email that you wish to examine.
  2. Open the email and click on the three dots symbol located in the upper right corner.
  3. Choose the “Show original” option.
  4. In the original email view, you can see complete information such as the sender of the email, the mail server used, and the authentication results for SPF and DKIM, as well as DMARC guidelines. Next to the “Creation Date” line, you can also check if there was a suspicious delay while sending the message.
  5. Copy the text of the original message with all the information.
  6. Now go to the Google Messageheader tool and insert the copied text under “Copy email header here”.
  7. Click “Analyze header above” and wait for the manual check to complete.

Apple Mail

  1. Open Apple Mail and the relevant email.
  2. Click “Overview”, then “Message” > “All Headers”.
  3. You should now see the email header in a separate window with all the information relating to the email sent and the sending process.


  1. Open Outlook and double-click the email you want to check.
  2. Click “File” then “Properties” to display the detailed information of the email in the “Internet headers” field.


  1. Open Mozilla and the corresponding email.
  2. Click “View” and “Message Source Text” to analyze the email information.



To wrap up, securing and validating your emails in the digital world is of utmost importance, and a comprehensive knowledge of DMARC inspections is vital for companies. DMARC, which stands for Domain-based Message Authentication Reporting and Conformance, is critical in consolidating SPF (Sender Policy Framework) and DKIM (Domain Keys Identified Mail) to verify email authenticity. The three primary functions of DMARC – reject, quarantine, or take no action - assist in regulating email traffic according to set rules.

If DMARC settings are not correctly configured, it can result in serious repercussions such as susceptibility to phishing attacks and weakened email protection. The tendency of hackers to manipulate email correspondences underlines the necessity of precise DMARC inputs to protect against spam campaigns and phishing emails.

Implementing DMARC entries requires adjusting parameters within the DMARC record and determining email server responses to failed security inspections. It is crucial to monitor and check DMARC consistently, and there are multiple tools designed for varying DMARC checking requirements.

Dmarcian, MxToolbox, and DMARC Digests are some of the tools discussed. Dmarcian provides various professional DMARC management platforms and free DMARC check tools. DMARC Digests is an excellent choice for small businesses due to its user-friendly interface. MxToolbox caters to free users and premium subscribers with tools for checking DMARC, DKIM, and SPF.

Utilizing DMARC and email testing tools comes with many benefits, such as rapid detection and rectification of errors in email transmission, improved protection against spam and identity fraud, and verification of the authenticity of email domains for marketing initiatives.

If you manually conduct DMARC testing, we have provided guidelines for Gmail, Apple Mail, Outlook, and Mozilla. However, for a more secure, efficient, and automated process of DMARC checks, it is suggested to use professional DMARC tools and service providers.

Essentially, by prioritizing email security via DMARC checks, businesses are protected from cyber threats and maintain the credibility and dependability of email communication with their clients, partners, and associates.


Frequently Asked Questions:

Q: What is DMARC, and why is it important for email security?

A: DMARC, an acronym for Domain-based Message Authentication Reporting and Conformance, is a protocol that improves the security of emails by authenticating the validity of email domains. It consolidates SPF and DKIM to guarantee the genuineness of emails, thereby thwarting phishing efforts and junk mail. DMARC is crucial in protecting businesses from online risks and enhancing the overall credibility of email correspondence.

Q: How can I set up DMARC entries for my domain?

A: To establish DMARC entries, one must adjust settings within the DMARC record - a TXT record within the Domain Name System. It allows you to define how servers should manage emails that do not pass security inspections and prescribe necessary actions. It's crucial to consistently observe and refresh your DMARC records for the best email security.

Q: What are the consequences of incorrect DMARC configurations?

A: Not setting up DMARC configurations correctly can result in significant issues such as phishing attacks and breached email safety measures. Cyber offenders frequently manipulate email communications by imitating authentic emails. Precise DMARC records obstruct these phishing emails or junk mail campaigns from arriving at the recipients' mailboxes or guarantee their immediate interception.

Q: How do DMARC checks impact email deliverability?

A: DMARC evaluations play a crucial role in the delivery of emails by assigning three main functions: reject, isolate, and do nothing. When an email doesn't pass the DMARC assessment, it could either be declined by the receiving server (reject) or directed to the Spam folder for further scrutiny (isolate). Correctly set up DMARC entries to guarantee that valid emails reach their intended inbox, thus improving overall email deliverability.

Q: Are there free DMARC checking tools available for small businesses?

A: Indeed, small businesses can access DMARC checking tools at no cost. For instance, Dmarcian supplies free DMARC check tools such as Domain Verifier, DMARC Monitor, DMARC Configuration Assistant, SPF Analyst, DKIM Evaluator, DKIM Certification Tool, and XML-to-Human Translator. These resources provide an immediate overview of email security status without needing a Dmarcian account or subscription.

Q: How often should I conduct DMARC checks for my domain?

A: Maintaining email security hinges on consistent DMARC checks. It is advisable to frequently perform these checks and keep a keen eye on the DMARC reports for any changes in your email traffic. This encompasses data like the proportion of emails subject to DMARC checks, the count of declined emails, and specifics regarding the servers or applications implicated.

Q: Can I manually conduct DMARC tests without using additional tools?

A: Indeed, it's possible to execute DMARC tests manually by scrutinizing the email header. The blog offers Gmail, Apple Mail, Outlook, and Mozilla guidelines. Nevertheless, despite the availability of manual testing, it's advisable to use professional DMARC tools and service providers for more reliable, streamlined, and automated DMARC checks in line with best practices.