DMARC
On hostOK
v=DMARC1; p=reject; rua=mailto:dmarc@grammarly.com; adkim=s; aspf=s; pct=100
- Policy: reject
- Alignment: adkim=s, aspf=s
- pct=100
- rua=mailto:dmarc@grammarly.com
Explain this
What: DMARC tells receivers what to do when mail fails authentication & alignment.
Why: Enforcing DMARC protects your brand and unlocks BIMI logos.
Policies:
p=none– Monitor only; meets minimum sending, but doesn’t protect your brand.p=quarantine– Failing mail goes to spam (receiver discretion).p=reject– Failing mail is rejected outright.
Reports (rua): Aggregate XML reports surface failures (incl. sender requirements). Example:
<policy_evaluated>
<disposition>none</disposition>
<dkim>fail</dkim>
<spf>fail</spf>
<reason>
<type>local_policy</type>
<comment>Sender requirement failed: 550-5.7.1</comment>
</reason>
</policy_evaluated>












