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Understanding DNS in Email Authentication and Deliverability

Fabrício Yutaka Fujikawa, September 6, 2023September 25, 2023

The Domain Name System (DNS) serves as the backbone of internet navigation. It’s akin to the directory that translates human-friendly website names into machine-friendly IP addresses. But its role extends far beyond mere translation; it’s pivotal in securing and optimizing email communication for businesses.

In a world where phishing attacks are rampant, and email deliverability can make or break a marketing campaign, understanding DNS is not just technical jargon; it’s a business imperative.

Traditionally, businesses have relied on essential DNS records and standard email authentication protocols like SPF and DKIM. While these are foundational, they are not foolproof. It’s akin to having a primary lock on your door when burglars have learned lock-picking.

The limitations of conventional methods manifest in various ways—emails wrongly marked as spam, susceptibility to phishing attacks, and even compromised data integrity. These are not just IT issues but business risks that can affect your bottom line.

Other DNS records, such as DMARC, offer a more robust solution. Think of DMARC as the security system that ensures your other locks (SPF and DKIM) do their job effectively. It provides an extra layer of authentication and gives you control over how unauthenticated emails are handled.

Businesses that have implemented advanced DNS records report fewer instances of phishing attacks and improved email deliverability rates. It isn’t just a tech win; it’s a business win.

Ask yourself:

“Is my business doing enough to mitigate email security risks?”

Suppose your business only relies on essential DNS records like SPF and DKIM for email security. In that case, there’s room for improvement. These methods are foundational but not foolproof. To improve your email security, consider implementing advanced DNS records like DMARC, which adds an extra layer of authentication and control.

“How might DNS settings be affecting my email marketing ROI?”

DNS settings can have a direct impact on your email deliverability. If your emails are not properly authenticated, they’re more likely to end up in the spam folder, reducing the effectiveness of your email marketing campaigns. Poor deliverability means lower open rates, fewer conversions, and a lower ROI. Advanced DNS settings can improve your sender reputation, making it more likely that your emails will reach the inbox, potentially increasing your ROI.

“What steps can I take to improve both email authentication and deliverability?”

  1. Review Current DNS Records: Review your existing DNS settings to ensure they are correct.
  2. Implement Advanced Records: If you haven’t already, implement DMARC records to add an extra layer of security and control over your email authentication.
  3. Regular Monitoring: Use monitoring tools to monitor your email deliverability metrics. It can give you insights into how well your DNS settings are working.
  4. Consult Experts: If you need help with how to go about this, consider consulting with professionals specializing in email authentication and deliverability.
  5. Educate Staff: Make sure your team is educated about the importance of email security to prevent human errors that could compromise your email system.
  6. Test and Tweak: Regularly test different elements of your email to see what affects deliverability. This could be anything from the subject line to the time of sending.

If you have questions regarding email deliverability and automation, comment below and I will reply.

Cheers,
Fabrício

Outbound Email Authentication: Security & Deliverability

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