What is DMARC and Why it Matters for Your Business

Email remains one of the main ways organisations communicate with customers, suppliers and partners. Unfortunately, it is also one of the most common routes used by cyber criminals to impersonate trusted businesses.

DMARC is one of the key technologies that helps protect your organisation’s identity online.

DMARC stands for Domain based Message Authentication, Reporting and Conformance. In simple terms, it is a security setting that tells other email systems how to handle messages that claim to come from your domain.

Its purpose is to ensure that only legitimate emails sent on behalf of your business are trusted.

DMARC works alongside two existing email security checks called SPF and DKIM.

SPF confirms that the server sending the email is authorised to send messages on behalf of your domain.

DKIM adds a secure digital signature to your emails to confirm that the message has not been altered and genuinely came from an approved source.

DMARC brings these together and adds a clear instruction to receiving mail systems on what to do if an email fails these checks.

Depending on your policy, suspicious messages can be monitored, filtered into spam, or blocked completely before they ever reach the inbox. This helps stop fraudulent emails from reaching your customers, staff or partners.

Without proper email authentication, anyone can attempt to send messages that appear to come from your organisation. This is a common tactic used in phishing and invoice fraud attacks.

DMARC helps:

• Prevent criminals from impersonating your business email addresses
• Protect customers and suppliers from fraudulent messages
• Reduce the risk of Business Email Compromise attacks
• Safeguard your brand reputation
• Provide visibility into who is sending email using your domain

It also provides reporting, allowing you to see whether emails sent in your name are legitimate or potentially malicious.

You can think of DMARC as a security policy for your email domain.

It tells the outside world:

“If an email claims to come from us, it must pass our security checks. If it does not, here is how you should handle it.”

Depending on how strict your policy is, suspicious messages can be monitored, sent to spam, or rejected entirely.

Implementing DMARC is a technical exercise with a practical step towards improving cybersecurity, protecting your reputation and building trust with the people you communicate with every day.

For organisations that rely heavily on email for sales, customer communication, finance or operations, it is now considered a fundamental part of a modern security posture.

If you are unsure whether your domain is properly protected, or you would like to understand who may be sending email on behalf of your organisation, our team can help.

FUTERA can review your current email security configuration, check your SPF, DKIM and DMARC settings, and provide clear guidance on how to strengthen protection without disrupting your day to day communication.

If you would like more information or support with securing your email domain, get in touch with the FUTERA team and we will be happy to help.