Mailgenius guides

Is DMARC Necessary? 5 Reasons You Should Implement DMARC Now!

Email security has become paramount for businesses and organizations worldwide. With the ever-growing threat of email spoofing and phishing attacks, a robust solution is needed to protect sensitive information and maintain a positive online reputation. This brings up the question, “is DMARC necessary?” Enter DMARC, a powerful email authentication protocol designed to safeguard your domain and ensure legitimate emails are delivered to their intended recipients.

Note: Test your email authenticity with MailGenius’s DMARC checker. Test out our DMARC checker today and ensure your emails are properly authenticated. Get 3 free tests.

DMARC: A Brief Overview

DMARC, or Domain-based Message Authentication, Reporting, and Conformance is an email authentication protocol that leverages SPF (Sender Policy Framework) and DKIM (DomainKeys Identified Mail) checks to protect against email spoofing and phishing attacks. Implementing DMARC offers numerous benefits, such as:

  • Increased email deliverability

  • Insightful DMARC reports

  • Improved domain reputation

  • Preserving brand trust and customer relationships

DMARC policies are available in three forms:

  1. “none” – This policy does not take any action on suspicious emails.

  2. “quarantine” – This policy moves suspicious emails to the spam folder.

  3. “reject” – This policy blocks suspicious emails completely.

Given the rise of remote work and electronic communication, the use of DMARC, particularly DomainKeys Identified Mail (DKIM), becomes substantially beneficial in certifying email authenticity.

The Importance of DMARC

Businesses and organizations find DMARC as an indispensable instrument that enhances email security, improves deliverability, and provides a safeguard for domain reputation against domain spoofing attacks. One of the key aspects of DMARC is the SPF lookup limit, which refers to the maximum number of DNS lookups a receiving mail server can perform to determine if an email message passes SPF authentication.

If a company’s SPF records consist of more than 10 lookups, messages might not pass authentication. This happens when the domain, listed at the end, is too late for validation. This can lead to internet service providers (ISPs) blocking or filtering emails from the domain, ultimately affecting email deliverability and domain reputation. ISPs may use IP addresses, including malicious IP addresses, as one of the factors in their filtering process.

Top 5 Reasons Why DMARC is Necessary

There are numerous compelling reasons why DMARC is indispensable, such as:

  • Its ability to combat email spoofing and phishing attacks

  • Enhance email deliverability

  • Provide valuable insights through DMARC reports

  • Boost domain reputation

  • Safeguard brand trust and customer relationships.

We can better appreciate these reasons by delving into each one and understanding its importance.

Combating Email Spoofing and Phishing Attacks

DMARC’s provision of email authentication minimizes the risk of domain impersonation, subsequently reducing the threat of email spoofing and phishing attacks. DMARC works in tandem with SPF, a method utilized by ISPs to confirm that a mail server is authorized to send email on behalf of a domain. Together, DMARC and SPF help authenticate emails and minimize the risk of domain impersonation, aiding in the prevention of email spoofing and phishing attacks.

Without DMARC deployment, there’s an increased risk of malicious actors spoofing emails from a domain, possibly leading to business email compromise, data breaches, financial losses, and damage to reputation. Organizations that prioritize email security and implement DMARC are better equipped to prevent such devastating consequences.

Enhancing Email Deliverability

Email deliverability refers to the ability of an email to arrive in the recipient’s inbox without being classified as spam or blocked by email servers. DMARC plays a crucial role in improving email deliverability by facilitating the authentication of emails sent from a domain. This, in turn, ensures that legitimate emails are delivered to their intended recipients and illegitimate emails are kept at bay.

SPF is essential for authenticating the sender of emails sent from your domain, directly impacting email deliverability. With DMARC, you can maintain complete control over your email domain and prevent spoofed emails from affecting your domain’s reputation and deliverability.

Gaining Insight with DMARC Reports

For domain owners, DMARC reports serve as invaluable tools, providing insights into their domain’s email infrastructure. By analyzing these reports, a domain owner can detect malicious emails claiming to be from their domain and take measures to improve email deliverability and protect against spoofing and phishing.

DMARC reports furnish valuable insights into email authentication results, assisting in the identification and correction of errors as well as monitoring of malicious IPs. By understanding and utilizing DMARC reports, organizations can better secure their email communication and protect themselves against email fraud and impersonation attacks.

Boosting Domain Reputation

Domain reputation gauges the overall trustworthiness and credibility of a domain name or website, taking into account factors like content quality, user engagement, security measures, and adherence to best practices. DMARC enhances domain reputation by authenticating emails, signifying trustworthy sources, and decreasing the likelihood of being flagged as spam.

DKIM is crucial for improving trust and reputation with ISPs, as it allows them to verify that the message has not been altered since it was sent, thus indicating good sending practices. By leveraging DMARC, businesses can maintain a strong domain reputation, leading to improved email deliverability and customer trust.

Protecting Brand Trust and Customer Relationships

Brand trust denotes consumer confidence and reliability in a specific brand, which builds over time through the consistent delivery of quality products or services, transparent communication, and ethical business practices. DMARC plays a crucial role in protecting brand trust and customer relationships by blocking email fraud and impersonation attacks.

By implementing DMARC, businesses can:

  • Demonstrate their commitment to email security

  • Protect their customers from potential phishing and pretexting attacks

  • Foster customer loyalty and trust

  • Solidify long-lasting relationships

  • Enhance brand reputation

The Risks of Not Implementing DMARC

Not implementing DMARC could leave your organization vulnerable to email spoofing, phishing scams, and data breaches, highlighting its importance as an integral part of email security. Let’s examine the consequences of not using DMARC and the importance of its implementation in more detail.

Do you need to use DMARC?

DMARC is necessary for businesses and organizations to protect their domain, improve email deliverability, and maintain a strong online reputation. Given the increasing prevalence of email fraud and impersonation attacks, implementing DMARC is essential to ensure the authenticity of your domain’s emails and protect your organization from potential scams.

DMARC is the most effective way to prevent scams and ensure the authenticity of your emails. By implementing DMARC, businesses and organizations can gain control of their email communication, protect their customers, and mitigate the risk of phishing and pretexting attacks.

How to Successfully Implement DMARC for Your Domain

Successfully setting up DMARC for your domain requires checking with a DMARC tester, configuring DMARC records, and regularly monitoring reports for continuous enhancements.

Let’s explore the steps to ensure a robust DMARC implementation.

Check with a DMARC tester

The use of a DMARC tester can ensure precise implementation and configuration of DMARC records, thus minimizing potential errors while maximizing email security. A DMARC tester is utilized to:

  • Confirm that the DMARC record is correctly configured

  • Verify that the domain is correctly authenticated

  • Ensure optimal security and email deliverability

  • Fix issues read in the DMARC report

By employing a DMARC tester, domain owners can:

  • Detect potential problems with the DMARC record that could result in email spoofing or phishing attacks

  • Take necessary corrective measures

  • Safeguard your email domain against potential threats

  • Ensure the smooth delivery of legitimate emails

The insights provided by a DMARC tester are invaluable in protecting your email domain from potential threats targeting mail servers.

Common DMARC Misconceptions Debunked

DMARC is surrounded by several misconceptions, such as:

  • The notion that it only applies to domains that send mail

  • Setting the DMARC policy to “none” is sufficient for email security

  • Its role in protecting against email fraud and impersonation attacks is not as significant

In reality, DMARC is a critical component of email security and is essential for businesses and organizations of all sizes and industries.

Deploying DMARC requires proper configuration of both SPF and DKIM, along with ongoing monitoring of DMARC reports to ensure the policy is functioning as desired. DMARC is not a spam filter; rather, it’s a policy that defines how to handle emails that fail the SPF and DKIM checks, helping to protect against email fraud and impersonation attacks.

Implementing DMARC is an essential step in securing your email domain and safeguarding the trust and loyalty of your customers.


DMARC is an indispensable tool for email security, offering protection against email spoofing and phishing attacks, improved deliverability, and a boost in domain reputation. By successfully implementing DMARC, businesses and organizations can maintain brand trust, foster customer relationships, and gain valuable insights from DMARC reports. Don’t leave your email domain vulnerable—take action and implement DMARC today to safeguard your organization’s online presence.