Private browser tool
DMARC record checker
Paste a DMARC TXT value and check its structure, required tags and common mistakes.
The record is checked only in your browser.Structurally reasonable · 3 tags
This is a monitoring policy and does not request quarantine or rejection.
This checks syntax and common mistakes; it does not query DNS or prove that every receiver will interpret a record identically.
Use the result carefully
DMARC decisions depend on public DNS, receiver behaviour and real authentication results. Use this output as a focused diagnostic aid, then confirm changes through DNS and subsequent aggregate reports.