The Comprehensive Guide to Resolving the Error 'No DMARC Record Found

As cyberattacks become more sophisticated and frequent, organizations must prioritize email security.

One effective way to improve email security is by using Domain-based Message Authentication, Reporting, and Conformance (DMARC).

DMARC is an email authentication protocol that helps organizations protect their email domains from phishing and other email-based threats.

In this blog post, we will discuss how to fix the error "No DMARC Record Found" and improve email security.

What is DMARC Record?

DMARC stands for Domain-based Message Authentication, Reporting, and Conformance. It is an email authentication protocol that uses Sender Policy Framework (SPF) and DomainKeys Identified Mail (DKIM) to authenticate emails.

DMARC enables organizations to instruct email receivers on how to handle emails that fail SPF or DKIM checks. The DMARC policy is published in a DNS record, called the DMARC record.

Why Do You Need DMARC?

DMARC helps organizations protect their email domains from phishing and other email-based attacks. It enables email receivers to verify the authenticity of emails sent from your domain, preventing spoofing and impersonation.

DMARC also provides feedback on email authentication failures, allowing organizations to identify and address issues quickly.

How does DMARC work?

DMARC works by providing instructions to email receivers on how to handle emails that fail SPF or DKIM checks.

It does this by instructing email receivers to either quarantine or reject emails that fail authentication checks.

The DMARC policy is published in a DNS record, called the DMARC record.

Common DMARC Issues?

One common DMARC issue is the error "No DMARC Record Found."

This error occurs when an organization does not have a DMARC record published in their DNS. Without a DMARC record, email receivers cannot verify the authenticity of emails sent from your domain, leaving your organization vulnerable to phishing and other email-based attacks.

How to Fix and Add Your Missing DMARC Record?

First, you need to make sure there is no DMARK entry.

This is easy to do with the Warmy checker, you just need to connect your mailbox to Warmy and run the check. If the DMARC record is missing you will see it in the scan results.

In addition, you can also see the status of your domain, the presence of your IP in the blacklists and other errors, if any.

To fix the error "No DMARC Record Found," you need to create and publish a DMARC record in your DNS.

Here are the steps to create and publish a DMARC record:

Step 1: Determine your DMARC policy

Decide on your DMARC policy. You can instruct email receivers to either quarantine or reject emails that fail SPF or DKIM checks.

Step 2: Create a DMARC record

Create a DMARC record using a DMARC generator or by manually creating a DMARC record. Your DMARC record should include the policy you decided on in Step 1.

✅ Use a DMARC generator

One way to create a DMARC record is to use a DMARC generator. Many online tools are available that can generate a DMARC record based on your chosen policy. To use a DMARC generator, you'll typically need to provide information such as your domain name, email address for DMARC reports, and the policy you want to apply.

✅ Manually create a DMARC record

If you prefer to create a DMARC record manually, you can use a text editor to create a DNS TXT record that contains the DMARC policy. The record should be added to your DNS zone file.

A basic DMARC entry consists of a TXT record in the DNS that defines the policy for how receivers should handle email messages that fail SPF or DKIM checks. For example, a DMARC policy could specify that receivers should quarantine or reject email messages that fail authentication.

A typical DMARC entry might look something like this:

_dmarc.example.com. IN TXT "v=DMARC1; p=quarantine; rua=mailto:dmarc@example.com"

In this example, the domain is "example.com", and the DMARC entry is "_dmarc.example.com". The DMARC policy is set to "quarantine" any email that fails authentication, and DMARC reports should be sent to "dmarc@example.com". The "v=DMARC1" indicates the version of the DMARC protocol being used.

The specific values used in a DMARC entry can vary depending on the domain owner's preferences and requirements. It's important to carefully configure and test the DMARC policy to ensure that it is effective and doesn't inadvertently cause legitimate email messages to be blocked or filtered.

Step 3: Publish your DMARC record

Publish your DMARC record in your DNS. To do this, you will need to add a TXT record to your DNS with your DMARC record.

Step 4: Monitor DMARC reports

Monitor DMARC reports to ensure that your DMARC policy is being enforced correctly. DMARC reports provide feedback on email authentication failures, allowing you to identify and address issues quickly.

In conclusion, DMARC is an essential email authentication protocol that helps organizations protect their email domains from phishing and other email-based attacks. If you receive the error "No DMARC Record Found," you need to create and publish a DMARC record in your DNS.

By following the steps outlined in this blog post, you can improve email security and protect your organization from email-based threats.