This blog post provides guidance on achieving optimal email deliverability by correctly configuring email authentication protocols like SPF, DKIM, and DMARC when sending emails through Amazon SES, and troubleshooting common scenarios that lead to DMARC policy failures.

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<p>This article provides an overview of DMARC (Domain-based Message Authentication, Reporting, and Conformance) and its role in email authentication and delivery. It discusses the benefits of implementing DMARC and how it works with SPF (Sender Policy Framework) and DKIM (DomainKeys Identified Mail) to authenticate emails.</p>
<p>Specifically, the article covers:</p>
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<li>What DMARC is and its three policy modes (none, quarantine, reject)</li>
<li>The process of deploying DMARC for new and existing domains</li>
<li>How SPF and DKIM contribute to DMARC authentication</li>
<li>Common scenarios where DMARC may fail, such as email content modification, email forwarding, and multiple email sending providers</li>
<li>Solutions to address DMARC failures and optimize email deliverability</li>
<li>The structure and contents of a DMARC aggregate report</li>
<li>Handling DMARC for unused or dangling domains</li>
<li>Conclusion on the importance of DMARC for email security and deliverability</li>
</ul>
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Amazon SES: Email Authentication and Getting Value out of Your DMARC Policy

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