DMARC is a policy signal
A public DMARC record tells a receiving system how a domain wants authentication failures handled and where policy signals may be reported. The visible record is an important input, not the whole mail-delivery story.
Read the policy with its boundaries
- Check whether a record is present at the expected public location.
- Read the policy and alignment fields as published, without assuming sender behavior.
- Keep inbox placement, reputation and report history outside a single DNS check.
Why a finding matters
A missing, malformed or unexpectedly permissive policy can justify a closer review. A valid-looking record can still coexist with sender configuration or mailbox issues that this bounded check cannot see.
The next safe action
Use the free check to collect the public signal, then use the evidence and scope to decide whether a human assessment is warranted. QuickFix does not request credentials and does not perform anonymous active probing.