📧 Why did I receive an email from this domain?

This domain is part of the Net Reaction Small Business Security email configuration testing service.

Someone at your organization requested an Email Security Test, which sends a series of test emails to verify that your email provider is properly filtering malicious messages.

🔍 What does this test check?

Test #5: Legitimate Email Delivery (Control Test)

This test verifies that your email system can receive properly authenticated, legitimate emails. This is our "control" test - it should pass all authentication checks.

This email was sent with:

• Valid SPF record (our server is authorized to send)
• Valid DKIM signature (cryptographically signed)
• Proper DMARC alignment (everything matches)
• Clean content (no spam triggers)
• Legitimate sender patterns

🛠️ If this email didn't reach your inbox

If the legitimate test email was blocked or sent to spam, your filters may be overly aggressive:

1. Check your spam/junk folder The email might be there with a warning banner. If so, your filters are being cautious but may be too strict.
2. Review spam filter sensitivity For Microsoft 365: Check spam filter threshold in Exchange admin center (Protection → Spam filter). For Google: Review settings in Admin Console.
3. Check custom mail flow rules You or your IT provider may have created rules that are too restrictive. Review any custom transport rules or mail flow policies.
4. Review third-party security tools If you use a third-party email security gateway (Proofpoint, Mimecast, Barracuda, etc.), check its sensitivity settings.
5. Consider safe sender lists While not ideal for security, if legitimate business emails are being blocked, you may need to add trusted partners to a safe sender list.

📚 Why Control Tests Matter

Email security is a balance. Too loose, and threats get through. Too strict, and you miss legitimate emails:

1. False positives hurt business Missing an invoice from a vendor, a contract from a client, or a time-sensitive communication can cost real money and damage relationships.
2. Users lose trust If important emails keep going to spam, users start checking spam folders constantly - or worse, marking spam as "not spam" to train filters incorrectly.
3. The Goldilocks zone Good email security blocks threats while allowing legitimate mail through. That's why we test both - malicious patterns AND legitimate ones.
4. Authentication should be rewarded When senders properly configure SPF, DKIM, and DMARC (like we did for this test), their emails should have an easier time reaching inboxes.