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What is DKIM? DomainKeys Identified Mail (DKIM) is an email authentication method that verifies whether an email was altered during transmission. DKIM helps protect recipients and your organization from cyberthreats like Man-in-the-Middle (MitM) attacks.
DKIM acts like a digital passport for your business’s emails. It allows email servers that receive your company’s messages to verify that they haven’t been altered along the way.
When your organization sends an email, DKIM attaches a digital signature. The recipient’s server checks this signature using information from your business’s DNS records. If everything matches, your company’s email is verified as authentic.
DKIM allows receiving email servers to check whether a message has been tampered with in transit.
Here’s how it works:
DKIM is a core component of a secure email strategy and works alongside Sender Policy Framework (SPF) and Domain-based Message Authentication, Reporting, and Conformance (DMARC) to protect your company’s domain from abuse.
Want help setting up DKIM correctly? Book a demo with a Sendmarc expert to see how we streamline DKIM, SPF, and DMARC implementation.
Implementing DKIM is essential for strengthening email security and maintaining domain reputation. Without DKIM, cybercriminals can attack your organization’s domain, putting both your business and its clients at risk.
Key benefits of DKIM:
Together, DKIM, SPF, and DMARC provide a layered defense that protects your company’s domain and improves email performance.
Need help implementing all three protocols the right way? Book a demo with us to secure your organization’s email from spoofing and improve deliverability.
Verifying that DKIM is active and correctly working is a critical part of safeguarding your business’s email domain. Your company can confirm this using tools like Sendmarc’s DKIM lookup and header analysis.
These tools make it easy to confirm that DKIM is protecting your company’s email and that its messages are properly authenticated.
To answer the question “What is DKIM?” – DKIM authenticates your organization’s emails by verifying that the message content hasn’t been altered during transmission.
Yes, DKIM is essential if your business wants to protect its domain from cyberthreats while also improving its email deliverability.
DKIM isn’t complicated to set up, especially when using a solution like ours, which offers step-by-step guidance and simplifies the implementation and management process.
Your company can check if its emails are using DKIM by sending a message and analyzing it with tools such as Sendmarc’s header analysis. This tool shows whether a private key is present and how it was evaluated by the recipient’s email server.
DKIM alone doesn’t provide complete protection. For comprehensive email security, DKIM should be implemented alongside SPF and DMARC to authenticate the sender, verify the message content, and specify how to handle unauthenticated emails.
Ensure your organization’s emails are protected and authenticated from the start.