Olivier Reuland
Pragmatic Information Security and Privacy Expert

Email Security Analysis

Analyse your domain's email authentication records (SPF, DKIM, DMARC) to identify security vulnerabilities and improve email deliverability.
Why email authentication matters for your business?

DMARC, DKIM, and SPF are crucial email authentication protocols that work together to protect companies from email-based threats and maintain their email reputation. Here's why they're essential:

SPF (Sender Policy Framework) validates that emails are sent from authorised mail servers by checking the sender's IP address against a published list of approved servers. This prevents basic email spoofing where attackers forge your domain name.

DKIM (DomainKeys Identified Mail) adds a digital signature to outgoing emails using cryptographic keys. The receiving server can verify this signature against your published public key, ensuring the email hasn't been tampered with and actually came from your domain.

DMARC (Domain-based Message Authentication, Reporting and Conformance) ties SPF and DKIM together by telling receiving email servers what to do when an email fails authentication checks. It can instruct servers to quarantine or reject suspicious emails and provides reporting on authentication failures.

Why companies need all three:

  • Brand Protection - These protocols prevent cybercriminals from impersonating your company in phishing attacks, protecting both your reputation and your customers from fraud.
  • Email Deliverability - Major email providers like Gmail, Outlook, and Yahoo increasingly require proper authentication. Without these protocols, your legitimate emails may be marked as spam or blocked entirely.
  • Compliance and Trust - Many industries and business partners now expect proper email authentication as a basic security measure.
  • Visibility - DMARC reporting shows you exactly how your domain is being used across the internet, helping identify both legitimate issues and malicious activity.

Without these protections, companies face increased phishing attacks against their customers, damaged sender reputation, and poor email deliverability for legitimate business communications.

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