To help prevent domain spoofing, DMARC is used to tell recipient email servers what to do with any mail that fails verification of authenticity. So when creating your DMARC record, you should be using an email address that is not used for any other purpose.

TXT RECORD:
_dmarc
“v=DMARC1; p=reject;rua=mailto:[dmarc@yourdomain.com]”