DMARC Checker
Check the DMARC policy at _dmarc.domain.
The DMARC Checker is an essential online utility for anyone serious about email security and deliverability. This tool allows you to quickly verify the DMARC (Domain-based Message Authentication, Reporting, and Conformance) policy published for any given domain. For instance, a domain administrator setting up a new email server can use it to confirm their DMARC record is correctly configured, preventing unauthorized use of their domain for sending emails. Similarly, email marketers can troubleshoot why their legitimate emails might be encountering deliverability issues, often traced back to an improperly configured DMARC policy. Security professionals can also leverage this tool to audit a client's email infrastructure, identifying potential vulnerabilities.
To use the DMARC Checker, simply input the domain name (e.g., example.com), and the tool will query the DNS for the _dmarc.example.com TXT record. The output will display the full DMARC record found, along with an interpreted breakdown of its policy (p=), aggregate reporting address (rua=), forensic reporting address (ruf=), and other crucial tags like adkim and aspf for SPF/DKIM alignment. This detailed output helps you understand your domain's email authentication posture at a glance. A key tip when using this tool is to remember that if no DMARC record is published for a domain, the checker will report that none was found, indicating a potential security gap that should be addressed. It doesn't create a record, only finds what's publicly available. This immediate insight is invaluable for protecting your brand against spoofing and phishing attacks, ensuring your emails reach their intended recipients securely.
How to use DMARC Checker
Enter Your Domain
Navigate to the DMARC Checker tool and locate the input field. Type in the domain name you wish to check, for example, yourcompany.com, without any prefixes like www or http://.
Initiate DMARC Query
Click the "Check DMARC" or "Analyze" button next to the input field. The tool will then query the DNS servers to locate the DMARC record associated with your specified domain.
Review the DMARC Record
Once processed, the results will display the raw DMARC TXT record found. This includes the _dmarc subdomain and the full string, such as v=DMARC1; p=quarantine; rua=mailto:dmarc@example.com;.
Interpret Policy Details
Below the raw record, the tool will often provide an interpreted breakdown of the DMARC policy tags. Pay close attention to the p= (policy), rua= (aggregate report URI), and ruf= (forensic report URI) values to understand your domain's authentication settings.
Identify Missing Records
If no DMARC record is found for your domain, the tool will indicate this clearly. This means your domain currently lacks DMARC protection and is vulnerable to email spoofing.
Frequently Asked Questions
What is DMARC and why is it important to check it?
DMARC (Domain-based Message Authentication, Reporting, and Conformance) is an email authentication protocol designed to protect domains from spoofing and phishing. Checking your DMARC policy ensures your domain is properly configured to tell receiving mail servers how to handle emails that fail SPF or DKIM authentication, improving security and deliverability.
What information does the DMARC Checker typically provide?
The tool provides the full DMARC TXT record found for a given domain, including the DMARC version (v=), policy type (p=), aggregate reporting email address (rua=), forensic reporting email address (ruf=), and alignment modes for SPF and DKIM (adkim, aspf).
What if the DMARC Checker returns "No DMARC record found"?
If the DMARC Checker indicates no record was found, it means your domain currently does not have a DMARC policy published in its DNS records. This leaves your domain vulnerable to email spoofing and phishing attacks, and you should consider setting one up.
Can this DMARC Checker help me create a DMARC record?
No, the DMARC Checker is purely for verification and analysis. It reads existing DMARC policies but does not generate or help you publish new ones. For creating a DMARC record, you would typically use a DMARC record generator and then publish it through your domain's DNS provider.
How frequently should I check my DMARC record?
It's good practice to check your DMARC record whenever you make changes to your email infrastructure, add new sending services, or update your DNS settings. Otherwise, an annual or semi-annual review is sufficient to ensure everything is still correctly configured and aligned with your email security policies.
Does this DMARC Checker store my domain name or search history?
No, the DMARC Checker processes your request in real-time by querying public DNS records. It does not store your domain name, search history, or any personal data.