Yet across many small and mid-sized organisations, the same gaps continue to appear, creating easy opportunities for attackers to spoof messages, harvest credentials, or intercept sensitive information.

Phishing, domain impersonation, and malicious attachments remain the top threats to small and mid-sized businesses. And most of these attacks succeed not because of sophisticated techniques, but because of basic email misconfigurations.

Explore A Guide to Business Email Protection, a framework for securing your email stack from the ground up.

A quick scan of your public domain can reveal some of the most frequently overlooked weaknesses:

• Missing SPF Records: Email services can’t verify your domain, increasing spam and spoofing risk.
• Invalid or Absent DKIM Keys: Messages can be tampered with en route.
• No DMARC Policy: You have no control over how email providers handle unauthenticated messages.
• Self-Signed SSL Certificates: Undermine trust and trigger email delivery failures.
• Open Webmail Logins: Exposed login panels with no 2FA or CAPTCHA.

Without clear visibility into your domain’s email posture, misconfigurations can go unnoticed, even while attackers actively look for them. Identifying these gaps early reduces the likelihood of impersonation and improves deliverability.

• Watch: SPF, DKIM, DMARC: Email Security for Businesses. Understand the foundation of modern email protection.
• Follow on LinkedIn: Cecure Intelligence Limited for practical advice on securing email, domains, and communication systems.

Misconfigured email domains are easier to exploit than most assume, and attackers know it.