> For the complete documentation index, see [llms.txt](https://wiki.lucysecurity.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://wiki.lucysecurity.com/application-reference/support/system-tests/mail-spoofing-test.md).
# Mail Spoofing Test
Introduction
Email spoofing is the forgery of an email header so that the message appears to have originated from someone or somewhere other than the actual source. This tactic is commonly used in phishing and spam campaigns because recipients are more likely to open an email if they believe it is from a legitimate source. The goal of email spoofing is to deceive recipients into opening and possibly responding to a solicitation.
{% hint style="info" %}
Navigate to **Support -> System Tests -> Mail Spoofing Test**
{% endhint %}
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### Testing your domains
To test your domain's exposure to spoofing, simply enter the domain and a recipient on that same domain and then click **Start Test**:
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