Protecting your email domain from spoofing and unauthorized use is essential in maintaining trust and brand reputation. 

One effective way to achieve this is by implementing DMARC (Domain-based Message Authentication, Reporting, and Conformance). 

In this short guide, we'll walk you through the process of adding a DMARC record to your sending domain, ensuring that only legitimate emails are delivered using your domain name

Email providers such as Yahoo and AOL must set up a DMARC policy that includes a return address for receiving reports and a strict policy that rejects unauthenticated emails.

This guide will walk you through creating and implementing a DMARC record step by step, ensuring your domain is fortified against email security threats

Step 1: Go to: https://dmarc.postmarkapp.com/ 

Step 2: Fill out your domain & email

You will be provided with a DMARC DNS entry that looks similar to:
v=DMARC1; p=none; pct=100; rua=mailto:re+bncrabjsyjw@dmarc.postmarkapp.com; sp=none; aspf=r; 

Keep in mind:
The email address following 'mailto:' is unique for each user, so ensure you use the one provided specifically for you.

Optionally, you may use your email address but be prepared to receive a lot of technical reports which may become burdensome.

Step 3: Change the 'p=none' setting to 'p=reject' and update 'sp=none' to 'sp=reject'.

Step 4: Access the control panel or DNS management section of your domain hosting provider.

Step 5: Find your domain's DNS records and proceed to the section for TXT records

Step 6: Create a new TXT record, setting the host/name to "_dmarc.{yourdomain}"—be sure to substitute "{yourdomain}" with your actual domain name.

Note: 
Keep in mind that if your emails are sent from a subdomain, the TXT record should be "_dmarc.sub.[yourdomain]", replacing 'sub' with your specific subdomain

Step 7: Enter the entire DMARC value you obtained after completing step 2 into the record's value field.

Ensure you adjust the 'p' and 'sp' values as outlined in step 3.
Example : v=DMARC1; p=reject; pct=100; rua=mailto:business@sabintimsina.com; sp=reject'; aspf=r; 

Step 8: Select the option to 'Add Record/Value' or 'Save Changes'.

if you face any challenges or have queries during this process, please contact your domain hosting provider's support team for help.

Remember, you can modify these instructions to suit your particular situation. If you need further help or have additional questions, we are here to assist.