How to make & validate the DMARC entry?

How to make & validate the DMARC entry?

Commencing February 2024, Gmail and Yahoo will enforce authentication requirements, mandating the implementation of DKIM and DMARC authentication. AiTrillion strongly advises all senders to establish DKIM and DMARC for compliance.

For additional details regarding these modifications, refer to our blog post titled

DMARC (Domain-based Message Authentication, Reporting & Conformance) is a standard that extends SPF and DKIM, empowering domain owners to establish policies for mailbox providers (such as Google or Microsoft) in the event of SPF and DKIM check failures.

DMARC offers three primary policy configurations:
  1. None: Signifies that emails should be treated normally even if DMARC fails. This is akin to not having a DMARC record, yet it allows leveraging DMARC's reporting features.
  2. Quarantine: Specifies that emails failing the DMARC check should be directed to the spam folder upon delivery.
  3. Reject: Indicates that emails failing the DMARC check should be bounced and not delivered to the recipient.
Selecting a DMARC policy of "Quarantine" or "Reject" necessitates having a proper DKIM record configured for the sending domain. Failure to do so could result in all emails from AiTrillion failing the DMARC test, leading to their placement in the spam folder ("Quarantine") or complete blocking ("Reject"). Ensure DKIM is set up for all sending domains before implementing a stringent DMARC record.

To initiate DMARC implementation, it is advisable to commence with a policy of "None" to avoid impacting deliverability in the case of misconfiguration. Subsequently, monitoring DMARC reports will provide insights into the potential impact of adopting a stricter policy.

To make these entries in the DNS record, navigate to your domain provider's website, access the DNS records section, a
 recommended initial DMARC policy is provided below.

To visit the domain provider's website, you can refer to the screenshot below for details -:

Step 1: Log into Your GoDaddy Account

Step 2: Navigate to the DNS Management

Step 3: Add a TXT Record for DMARC

Step 4: Set Your DMARC Policy

Step 5: Save Your Changes

1. Having logged into the Namecheap account, choose Domain List on the left and click on the Manage button next to your domain:

2. Navigate to the Advanced DNS tab from the top menu and click on the Add new record button:

3. Set Your DMARC Policy.
4. Save Your Changes


1. Log in to Bluehost
Navigate to, enter your credentials to log in to its dashboard.

2. Locate your domain
On the Bluehost dashboard's home page, find your domain you want to add the DMARC record to, then click the Manage button, as highlighted below:

In this example, we are adding the record to domain

3. Manage DNS
Click the DNS tab, as shown below:

Now you will see the DNS section, where you can create a DMARC record for your domain.

4. Create the record entry
Scroll down to the bottom of the page where you can see a section for the TXT record type. Click the Add Record button:

Then enter the settings for your DMARC record. Make sure Host Record is set to _dmarc, TXT Value is set to the record generated above. Click the Save button. Now you have added the record!

For other domains
Create a TXT record with a Host or Name of _dmarc at your DNS provider and input the following value for the Value or Record.
Be sure to replace the email address in the example with your own:
v=DMARC1; p=none; pct=100;

It is crucial to replace the email address in the example to ensure receipt of DMARC reports. However, depending on your email volume, the specified email address's mailbox might become overwhelmed or reach its quota. Additionally, since DMARC reports are sent in XML format, they can be challenging to interpret. Therefore, it is highly recommended to collaborate with a DMARC Monitoring solution capable of processing these reports, offering more comprehensible and actionable insights.
To validate the DMARC entry for your domain you can use this online tool

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