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29 lines
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29 lines
1.1 KiB
Plaintext
# S/MIME Email Security
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Secure/Multipurpose Internet Mail Extensions (S/MIME) allows you to **sign** and **encrypt** internal emails.
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- **Signing**: Proves the email actually came from you (prevents spoofing).
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- **Encryption**: Ensures only the intended recipient can read the message.
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## Prerequisites
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- A TrustLab certificate with the **S/MIME** profile.
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- Downloaded in **PFX (.p12)** format.
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## Outlook (Windows) Setup
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1. Open Outlook. Go to **File > Options > Trust Center**.
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2. Click **Trust Center Settings > Email Security**.
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3. Under "Encrypted Email", click **Settings**.
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4. Click **Choose** for Signing Certificate and select your TrustLab ID.
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5. Click **OK**.
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## Thunderbird Setup
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1. Go to **Settings > Privacy & Security**.
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2. Scroll to **Certificates** and click **Manage Certificates**.
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3. Under **"Your Certificates"**, click **Import**.
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4. Select your `.p12` file.
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5. Go back to Account Settings > Security.
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6. Select the certificate for **Digital Signing** and **Encryption**.
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> [!TIP]
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> To send encrypted email to a colleague, you must first possess their Public Key (usually by receiving a signed email from them first).
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