DMARC issues when sending emails to Google

 

Why are my emails to Google being rejected due to DMARC issues?

Google enforces strict email authentication policies. If your domain’s DMARC (Domain-based Message Authentication, Reporting & Conformance) record is misconfigured, Google may reject or flag your emails as spam. This happens when your SPF (Sender Policy Framework) or DKIM (DomainKeys Identified Mail) records do not align with your DMARC policy.

 

How can I resolve DMARC issues with Google?

1. Ensure Proper SPF and DKIM Configuration: Make sure that your domain has valid SPF and DKIM records. These authenticate that emails are sent from authorized servers.
2. Align SPF, DKIM, and DMARC: Configure your DMARC policy to ensure that both SPF and DKIM align with the domain in the “From” header of your emails.
3. Set DMARC Policy to “None” Initially: If you’re testing, set your DMARC policy to p=none to gather data on email failures without affecting delivery.
4. Use DMARC Monitoring Tools: Regularly monitor DMARC reports to identify misconfigurations or potential abuse of your domain.

 

What is the best DMARC practice?

• Start with p=none: Test and monitor email traffic without blocking emails.
• Gradually enforce stricter policies: Move to p=quarantine or p=reject after resolving issues.
• Use a subdomain for third-party senders: Ensure external services use a subdomain for sending emails, allowing better DMARC alignment.

 

Best DMARC Record Example:

v=DMARC1; p=quarantine; sp=none; rua=mailto:dmarc-reports@yourdomain.com; ruf=mailto:dmarc-failures@yourdomain.com; fo=1; adkim=s; aspf=s; pct=100;

 

For more details, consult our support team at support@ipserverone.com.