DMARC (Domain-based Message Authentication, Reporting, and Conformance)
Example DMARC record
- Type: TXT
- Name: _dmarc #Do not forget the _ character
- Content: v=DMARC1; p=reject; rua=mailto:contact@youremail.com; ruf=mailto:contact@youremail.com
Notes
- "p": Ideally policy should be reject.
- "rua" "ruf": These are receivers and forensic receivers of reports so you can investigate.
How to measure success?
You can use DMARC checker at MXToolbox or similar tools.
Important: Your own DNS records will protect outgoing emails. Your MTA needs to be set to check DMARC records of incoming emails. It is actually quite easy.
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