---
title: Junk email and administrative quarantine - Microsoft 365 · Cloudflare
  Zero Trust docs
description: In this tutorial, you will learn how to deliver BULK messages to
  the users's junk email folder, and MALICIOUS, SPAM, and SPOOF messages to the
  administrative quarantine (this requires an administrator to release the
  emails).
lastUpdated: 2025-08-22T14:24:45.000Z
chatbotDeprioritize: false
source_url:
  html: https://developers.cloudflare.com/cloudflare-one/email-security/setup/pre-delivery-deployment/prerequisites/m365-email-security-mx/use-cases/three-junk-admin-quarantine/
  md: https://developers.cloudflare.com/cloudflare-one/email-security/setup/pre-delivery-deployment/prerequisites/m365-email-security-mx/use-cases/three-junk-admin-quarantine/index.md
---

In this tutorial, you will learn how to deliver `BULK` messages to the users's junk email folder, and `MALICIOUS`, `SPAM`, and `SPOOF` messages to the administrative quarantine (this requires an administrator to release the emails).

## Create quarantine policies

To create quarantine policies:

1. Open the [Microsoft 365 Defender console](https://security.microsoft.com/)

2. Go to **Email & collaboration** > **Policies & rules**.

3. Select **Threat policies**.

4. Under **Rules**, select **Quarantine policies**.

5. Select **Add custom policy**.

6. Set the **Policy name** to `UserNotifyAdminRelease`.

7. Select **Next**.

8. In **Recipient message access**, select **Set specific access (Advanced)**, and then:

   * In **Select release action preference**, choose *Allow recipients to request a message to be released from quarantine*.
   * In **Select additional actions recipients can take on quarantined messages**, select the **Delete** and **Preview** checkboxes.

9. Select **Next**.

10. In **Quarantine notification**, select **Enable**.

11. Select **Next**.

12. Review your settings and select **Submit**.

13. Select **Done**.

## Configure quarantine notifications

To configure quarantine notifications:

1. Open the [Microsoft 365 Defender console](https://security.microsoft.com/).

2. Go to **Email & collaboration** > **Policies & rules**.

3. Select **Threat policies**.

4. Under **Rules**, select **Quarantine policies**.

5. Select **Global settings**.

6. Scroll to the bottom and set the desired frequency in **Send end-user spam notifications every (days)**. This value can only be incremented in days.

7. Select **Save**.

## Configure anti-spam policies

To configure anti-spam policies:

1. Open the [Microsoft 365 Defender console](https://security.microsoft.com/).

2. Go to **Email & collaboration** > **Policies & rules**.

3. Select **Threat policies**.

4. Under **Policies**, select **Anti-spam**.

5. Select the **Anti-spam inbound policy (Default)** text (not the checkbox).

6. In **Actions**, scroll down and select **Edit actions**.

7. Set the following conditions and actions (you might need to scroll up or down to find them):

* **Spam**: *Move messages to Junk Email folder*.
* **High confidence spam**: *Quarantine message*.
  * **Select quarantine policy**: \_UserNotifyAdminRelease\_.
* **Phishing**: *Quarantine message*.
  * **Select quarantine policy**: \_UserNotifyAdminRelease\_.
* **High confidence phishing**: *Quarantine message*.
  * **Select quarantine policy**: \_UserNotifyAdminRelease\_.
* **Retain spam in quarantine for this many days**: Default is 15 days. Email Security recommends 15-30 days.
  * Select the spam actions in the above step.

1. Select **Save**.

## Create transport rules

To create the transport rules that will send emails with certain [disposition](https://developers.cloudflare.com/cloudflare-one/email-security/reference/dispositions-and-attributes/#dispositions) to Email Security:

1. Open the new [Exchange admin center](https://admin.exchange.microsoft.com/#/homepage).

2. Go to **Mail flow** > **Rules**.

3. Select **Add a Rule** > **Create a new rule**.

4. Set the following rule conditions:

   * **Name**: *\`Email Security Deliver to Junk Email folder\`*.

   * **Apply this rule if**: *The message headers* > *includes any of these words*.

     * **Enter text**: `X-CFEmailSecurity-Disposition` > **Save**.
     * **Enter words**: `BULK` > **Add** > **Save**.

   * **Apply this rule if**: Select **+** to add a second condition.

   * **And**: *The sender* > *IP address is in any of these ranges or exactly matches* > enter the egress IPs in the [Egress IPs](https://developers.cloudflare.com/cloudflare-one/email-security/setup/pre-delivery-deployment/egress-ips/) page.

   * **Do the following** - *\_Modify the message properties\_ > \_Set the Spam Confidence Level (SCL)\_ > \_5\_*.

5. Select **Next**.

6. You can use the default values on this screen. Select **Next**.

7. Review your settings and select **Finish** > **Done**.

8. Select the rule \`Email Security Deliver to Junk Email folder\` you have just created, and **Enable**.

9. Select **Add a Rule** > **Create a new rule**.

10. Set the following rule conditions:

    * **Name**: *\`Email Security User Quarantine Message\`*.

    * **Apply this rule if**: *The message headers* > *includes any of these words*.

      * **Enter text**: `X-CFEmailSecurity-Disposition` > **Save**.
      * **Enter words**: *\`MALICIOUS\`, \`UCE\`, \`SPOOF\`* > **Add** > **Save**.

    * **Apply this rule if**: Select **+** to add a second condition.

    * **And**: *The sender* > *IP address is in any of these ranges or exactly matches* > enter the egress IPs in the [Egress IPs](https://developers.cloudflare.com/cloudflare-one/email-security/setup/pre-delivery-deployment/egress-ips/) page.

    * **Do the following**: *\_Modify the message properties\_ > \_Set the Spam Confidence Level (SCL)\_ > \_9\_*.

11. Select **Next**.

12. You can use the default values on this screen. Select **Next**.

13. Review your settings and select **Finish** > **Done**.

14. Select the rule *\`Email Security User Quarantine Message\`* you have just created, and select **Enable**.
