Protect Your Business from Email Spoofing with DMARC

Email remains the backbone of communication for most small and medium‑sized businesses. It’s how you speak to customers, send invoices, share internal updates, and manage day‑to‑day operations.

But as email has evolved, so have the tactics used by cyber criminals.

One of the biggest risks facing businesses today especially local organisations across areas like Suffolk and Ipswich– is email spoofing. This is where attackers send emails that pretend to come from your domain. And the truth is, without proper DMARC configuration in place, it’s far easier than most business owners realise.

What Is DMARC and Why Does It Matter?

DMARC (Domain-based Message Authentication, Reporting and Conformance) is a security protocol that helps protect your email domain from unauthorised use.

Put simply, DMARC tells receiving mail servers what to do if an email claims to be from your business but isn’t actually genuine.

It works with two key email checks- SPF, which controls who can send emails using your domain, and DKIM, which ensures emails haven’t been tampered with. DMARC brings this together by deciding what happens when something doesn’t look right.

With proper DMARC configuration, your domain becomes significantly harder for criminals to imitate.

The Risks of Not Having DMARC in Place

Without DMARC, attackers can send emails that look almost identical to legitimate messages from your business. This can include:

• Fake invoices sent to your customers
• Fraudulent payment requests
• Emails that trick your team into sharing sensitive information
• Phishing attacks that damage your credibility
• Malware or malicious links sent “from” your domain

For businesses in areas like Ipswich and wider Suffolk, where many companies rely on strong local customer trust, the fallout can be especially damaging- financially and reputationally.

What Proper DMARC Configuration Helps You Achieve

When set up and managed properly, DMARC gives your business powerful protection, including:

✔ Safeguarding your brand

Your customers, suppliers, and employees are less likely to receive fraudulent emails pretending to be from you.

✔ Reducing impersonation and spoofing

DMARC makes it far harder for attackers to misuse your domain.

✔ Improving email deliverability

With stronger authentication in place, legitimate emails are more likely to reach inboxes, not spam folders.

✔ Increased visibility

DMARC reports help you identify who is sending email on behalf of your domain- including both legitimate third‑party services and potential misuse.

You Don’t Need to Be Technical- You Just Need It Configured Correctly

DMARC can feel confusing or overwhelming for business owners who aren’t deep into IT or Cyber Security. But the setup process itself doesn’t need to be complicated.

What does matter is that DMARC is configured correctly and monitored over time to ensure it’s doing its job.

At Corbel, we support businesses across Suffolk, Ipswich, and beyond by reviewing, configuring, and monitoring their domains to protect them from email-based threats. DMARC configuration is included as standard as part of our IT support.

Not Sure Whether Your Domain Is Protected?

If you’re unsure whether your DMARC is set up correctly (or if you’d simply like peace of mind) feel free to reach out. We’re always happy to take a look and point you in the right direction.

A few minutes of checking now could save your business a significant amount of cost, disruption, and stress later.

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Corbel Solutions are an Ipswich based IT Support Provider who work proactively throughout Ipswich and the wider Suffolk region including Felixstowe, Woodbridge, Newmarket, Sudbury. Providing a range of IT Support Services including Cyber Security and Cyber Security Training, Office 365 Support and IT Consultancy Services. To take a look at what others have had to say about us, check out our Google Review page. To find out more information or to have a chat with one of our team, feel free to give us a call on 01473 241515 or email us on info@corbel.co.uk. Or alternatively you can book in a call with one of our team members here.