Ensuring a successful DMARC implementation is crucial for protecting your domain against email threats such as phishing, spoofing, and email fraud. If you're experiencing issues with DMARC setup or compliance, follow this troubleshooting guide to resolve common problems and ensure a secure email environment.
Step 1: Verify DNS Record Configuration
Ensure that your DMARC record is correctly published in your DNS. You can use the DMARC Record Checker tool on Your DMARC to verify the record.
- Confirm the DMARC TXT record is added to
_dmarc.yourdomain.com - Verify the record structure follows the format:
v=DMARC1; p=none; rua=mailto:your@email.com; ruf=mailto:your@email.com
- Check for any typos or missing parameters
Step 2: Ensure SPF and DKIM Alignment
For DMARC compliance, both SPF and DKIM must align properly:
- SPF Record Check: Verify your SPF record using the SPF Record Checker to ensure authorized sending sources are listed and the record does not exceed the 10 DNS lookup limit
- DKIM Record Check: Use the DKIM Record Checker to confirm the correct public key is published and matches the private key used in outgoing emails
Step 3: Check for Alignment Failures
DMARC alignment ensures the 'From' domain matches the domain used in SPF and DKIM checks. Use the DMARC Lookup Tool to inspect:
-
Strict vs. Relaxed Alignment:
- Relaxed (r) allows partial matching
- Strict (s) requires exact matching
-
Correct Use of Identifiers: Verify that SPF and DKIM identifiers match the domain in the
Fromheader
Step 4: Inspect DMARC Reports
Use Your DMARC's Smart DMARC Reporting to analyze failure reports and identify sources causing non-compliance:
- Monitor DMARC reports for unauthorized sending sources
- Review common failure reasons such as missing DNS records, misconfigured DKIM keys, or unlisted sending services
Step 5: Address Email Deliverability Issues
If legitimate emails are being rejected or flagged as spam:
- Switch your DMARC policy to
p=nonefor monitoring mode - Gradually enforce stricter policies (
p=quarantineand thenp=reject) once misconfigurations are resolved - Check your BIMI record with the BIMI Record Checker to ensure proper brand logo display
Step 6: Update and Maintain Compliance
Maintaining DMARC compliance involves regular checks and updates:
- Review DMARC policies quarterly
- Keep DNS records updated when changing email service providers
- Subscribe to Your DMARC's Notification Service for updates and new security resources
Need More Help?
If you're still experiencing issues, explore our Guided Setup feature for step-by-step instructions on configuring DMARC, SPF, and DKIM. For personalized assistance, contact our support team to secure your email infrastructure effectively.
Take charge of your email security with Your DMARC—eliminate email fraud and strengthen your brand trust today.
