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Email Spoofing Test

Test if your domain is vulnerable to email spoofing. Comprehensive analysis of SPF, DKIM, and DMARC to assess your risk level.

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What is Email Spoofing?

Email spoofing is a technique used in phishing and spam campaigns where attackers forge the sender address of an email to make it appear as though it came from a trusted source. Because the SMTP protocol doesn't inherently verify sender identity, any mail server can send an email claiming to be from any domain — unless that domain has proper authentication in place.

Spoofing is dangerous because recipients trust emails that appear to come from known organizations. Attackers exploit this trust to steal credentials, distribute malware, or conduct business email compromise (BEC) attacks that cost organizations billions of dollars annually. The FBI's IC3 reports that BEC attacks caused over $2.7 billion in losses in 2022 alone.

The solution is a layered defense using SPF, DKIM, and DMARC. Together, these protocols verify sender identity, ensure message integrity, and tell receiving servers how to handle unauthenticated emails. Our spoofing test evaluates all three to give you a complete picture of your domain's vulnerability.

Frequently Asked Questions

What is email spoofing?
Email spoofing is when an attacker sends an email that appears to come from your domain without your authorization. They forge the 'From' address to impersonate your organization, tricking recipients into trusting the message. Spoofing is commonly used in phishing attacks, business email compromise (BEC), and fraud.
How do SPF, DKIM, and DMARC prevent spoofing?
SPF specifies which mail servers are authorized to send email for your domain, preventing IP-level forgery. DKIM adds a cryptographic signature to every email, proving it wasn't tampered with in transit and was sent from an authorized server. DMARC ties them together by requiring the visible 'From' domain to align with passing SPF or DKIM results, and specifying what to do with failures (none, quarantine, reject). All three together provide layered protection against spoofing.
How can I tell if my domain is being spoofed?
Enable DMARC with at least p=none and set up reporting (rua= tag) to receive reports from receiving mail servers. DMARC aggregate reports show you all mail claiming to come from your domain, including unauthorized senders. You can also monitor for phishing reports, user complaints about suspicious emails appearing to come from you, and use Google Postmaster Tools or similar services for major mailbox providers.
What is domain impersonation?
Domain impersonation is when attackers use your domain (or a lookalike domain) to send fraudulent emails. Direct spoofing uses your exact domain in the From header. Lookalike attacks register similar domains (like example-security.com instead of example.com) and are harder to block. Proper DMARC with p=reject stops direct spoofing. Lookalike domain monitoring requires separate tools and trademark enforcement.
How do I protect my domain from spoofing?
Start with a valid SPF record that includes all your legitimate sending servers. Add DKIM signing through your email provider. Deploy DMARC with p=none first to monitor traffic, then progress to p=quarantine and finally p=reject once you're confident all legitimate senders are covered. Monitor DMARC reports regularly. Also consider registering common lookalike domains to prevent impersonation attacks.

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