DMARC records provide instructions to email servers on how to handle emails that fail SPF or DKIM checks. To update DMARC records:
Access your domain’s DNS settings. Create or update the DMARC TXT record with the desired policy (none, quarantine, or reject). Specify the email addresses for reporting (RUA and RUF tags). Save the changes and monitor the DMARC reports to ensure proper implementation.
Regularly updating your DMARC policy helps in actively managing your domain’s email authentication.