- Log in to cpanel.
- Create a TXT record with the following values.
Name/Host/Alias : _dmarc
Time to Live (TTL*) : 3600
Record Type : TXT
Value : v=DMARC1; p=quarantine; pct=5; rua=mailto:postmaster@your_domain.com
NOTE: To allow third-party recipients to monitor, quarantine, or reject all the messages that claim to be from "your_domain.com" and fail the DMARC checks. You must replace "your_domain.com" with your own domain name. Daily aggregate reports will be sent to "postmaster@your_domain.com" (You'll need to specify a valid email address to receive reports for your domain).