How to Configure DMARC within the DNS

1. Create a DMARC Record:

   - A DMARC record is a TXT record in the DNS. The record outlines the DMARC policy for the domain.

   - We recommend having the minimum DMARC record configuration as below:

     v=DMARC1; p=none; rua=mailto:dmarc@yourdomain.com

   - Components:

     - `v=DMARC1`: The version of DMARC.

     - `p=none`: The policy (can be `none`, `quarantine`, or `reject`).

     - `rua=mailto:dmarc@yourdomain.com`: Reporting address for aggregate reports. This email need to be set up by the client and no domain will be provided by Cendyn CRM / PUSHTech.

2. Optional, Choose the DMARC Policy:

   - `p=none`: Monitoring mode, no action taken on emails.

   - `p=quarantine`: Emails that fail DMARC are placed in quarantine (spam folder).

   - `p=reject`: Emails that fail DMARC are rejected.

3. Optional, Publish the DMARC Record in the DNS:

   - Access your DNS management console.

   - Create a new TXT record.

   - The host name should be `_dmarc`, so the full DNS record name will be `_dmarc.yourdomain.com`.

   - Paste the DMARC record in the value field.

   - Save the changes.

4. Optional, Monitor and Analyze DMARC Reports:

   - Regularly check the reports sent to the specified email address.

   - Analyze the reports to understand the performance and adjust the DMARC policy as needed.

5. Optional, Adjust the Policy Gradually:

   - Start with a policy of `p=none` to monitor how your emails are performing without affecting their delivery.

   - Gradually move to `p=quarantine` and then to `p=reject` as you become confident in the SPF and DKIM setup.