DKIM, SPF and DMARC – brief explanation on why implementing them provides the best email protection.


One of the most popular and vulnerable forms of communication in the world is email. According to a Symantec report, 71% of spear phishing occurs through this single way of communication. This is why it’s essential to have the appropriate email protector in place to safeguard your business. Implementing SPF, DMARC, DKIM is one of the most efficient ways to safeguard your email.

What are SPF, DKIM, and DMARC?

Sender Policy Framework (SPF): is an email authentication method designed to detect forgery of the sender’s address in the “MAIL FROM” field of the Simple Mail Transfer Protocol (SMTP). It allows the owner of a domain to specify which mail servers are authorized to send email on their behalf.

Domain-Keys Identified Mail (DKIM): is an email authentication method that uses digital signatures to validate the authenticity of the email’s contents and the identity of the sender. It allows the owner of a domain to take responsibility for a message in transit.

Domain-based Message Authentication, Reporting, and Conformance (DMARC): It is an email authentication protocol designed to give email domain owners the ability to protect their domain from unauthorized use, like “email spoofing.” DMARC allows a domain owner to publish a policy in their DNS records that specifies which mechanisms are used to authenticate messages sent from their domain.

Why is DMARC linked to SPF and DKIM?

The famous cybersecurity expert Bruce Schneier once said, 

“Security is a process, not a product.” 

This claim underlines the need for many levels of protection to safeguard our internet accounts and ourselves from any dangers. Email protection follows the same principles. Together, DMARC, SPF, and DKIM offer several levels of email security.

Email sender and email content authentication are provided by SPF and DKIM, respectively. Moreover, DMARC offers a way to authenticate emails. It enables the email’s receivers to check for correspondence between the sender and its contents. then act in accordance with the outcome. These three techniques work together to offer the finest email security currently available.

Why do you require DMARC, SPF, and DKIM?

Cyberattackers commonly use email spoofing to deliver phishing emails or malware.

The goal is to trick the recipient into providing sensitive information or clicking on a malicious link.

By implementing DMARC, SPF, and DKIM, you can protect your organization from email spoofing and other types of cyberattacks. These protocols work together to authenticate. It verified the sender and the contents of the email. This makes it more difficult for attackers to impersonate a legitimate sender.

Risks of not implementing SPF, DKIM and DMARC?

The Anti-Phishing Working Group or APWG has conducted a thorough study. They found that more than 296,208 distinct phishing complaints rose in the year 2017 and has been increasing since. As of 2022, the number of complaints has increased to 1,270,883. It is expected to keep increasing. Without effective email protector in place, your firm is more vulnerable to these sorts of assaults.

Here are a few key points to consider:

  • Increased risk of email spoofing: Email spoofing is one of the most common types of cyberattacks, and it is often used to deliver phishing emails or malware. Without DMARC, SPF, and DKIM in place, your organization is more vulnerable to these types of attacks.
  • Loss of sensitive information: Email spoofing attacks can lead to the loss of sensitive information, such as login credentials or financial information.
  • Damage to your organization’s reputation: If your organization falls victim to a cyberattack, it can damage your organization’s reputation and lead to a loss of trust from customers and partners.
  • Financial losses: The financial impact of a cyberattack can be significant, including the cost of remediation and potential legal fees.
  • Non-compliance with regulations: Many industries and countries have regulations in place that require organizations to implement certain security measures, such as email authentication protocols. Failing to implement DMARC, SPF, and DKIM can result in non-compliance with these regulations and fines.
  • Lack of protection against phishing attacks: A study by the Anti-Phishing Working Group revealed that there were more than 1,270,883 unique phishing reports in 2022. Without the proper email protector in place, your organization is at a higher risk of falling victim to these types of attacks.
  • Reduced control over your domain: DMARC not only provides protection against phishing attacks, but it also allows domain owners to have more control over the use of their domain by allowing them to publish a policy on which mechanisms are used to authenticate messages sent from their domain.

The ideal email authentication trifecta is composed of DKIM, SPF, and DMARC. The security of your email is strengthened by their joint deployment. making it difficult for criminal actors to pose as trustworthy senders and spread malware or phishing emails.

Implementing these protocols is not a one-time task: it’s a continuous process.

The SPF protocol rigorously verifies credentials, acting as a diligent sentinel stationed at the gateway. It makes sure that only approved mail servers are allowed to send emails on your behalf. DKIM performs the role of a shrewd personal assistant by carefully reviewing the email contents to ensure their integrity. DMARC assumes the position of an effective security chief. Ensuring efficient and secure operations, from monitoring to controlling the complete email operation.

Don’t leave your email security to chance. Be proactive in your approach to email protection and implement the powerful triad of SPF, DKIM, and DMARC today. Secure your email communication from potential cyber-attacks and keep your valuable data safe. Take the first step now by exploring the advanced email authentication solutions available at EmailAuth. Book your free demo now!

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