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[Email DLP] Understanding the Attachment Processing Flow and Setup

Question

Please explain the processing flow and configuration steps when Attachment Handling in Email DLP Filter Settings is set to [Send with Secure Download (HSD)] or [Send with ZIP encryption].

Answer

The following is an overview of the processing flow for Email DLP Filter Settings and Attachment Handling (Secure Download / ZIP encryption).

  1. Apply the processing configured in the Email DLP "Filter" and "Rule Group" to outgoing emails.
  2. If the Attachment Handling of the Rule Applied in step 1 is set to [Send with Secure Download (HSD)] or [Send with ZIP encryption], the following processing is performed.

Processing image for [Send with Secure Download (HSD)]

newHSD.png

Processing image for [Send with ZIP encryption]

newZIP.png

Configuration steps for "Send with Secure Download"+

  1. Configure the format and Language of the Links to be sent via Secure Download in "Secure Download Type".
    [Email DLP] Attachment Settings - Create / Edit Secure Download Type

    Secure Download タイプの作成画面

  2. Use "Secure Download Policy" to Configure which Sender–Recipient combinations the configured "Secure Download Type" will be Applied to.
    ※ Note: If [Send with Secure Download] is not enabled, emails will not be sent via Secure Download even if "Send with Secure Download" is configured in the Rule.
    [Email DLP] Attachment Settings - Create / Edit Secure Download Policy

    Secure Download ポリシーの設定画面

    With the settings configured up to this point, you have configured who sends to whom, and in what format when the "Send with Secure Download" feature is configured in the Rule.

  3. Configure the Rule to send with Secure Download from "Rule Group".
    [Email DLP] Filter Settings - Create / Edit Rule Group
  4. From "Filter", Configure the Address Group for the Sender–Recipient combinations to be processed with Secure Download, along with the Rule Group configured in step 3.
    [Email DLP] Filter Settings - Create / Edit Filter

Configuration steps for "Send with ZIP encryption"+

  1. Configure the format and Language for sending ZIP files in "Encryption Type".
    [Email DLP] Attachment Settings - Create / Edit Encryption Type

    スクリーンショット 2026-07-03 11.15.51.png

  2. Use "Encryption Policy" to Configure which Sender–Recipient combinations the configured "Encryption Type" will be Applied to.
    [Email DLP] Attachment Settings - Create / Edit Encryption Policy

    スクリーンショット 2026-07-03 11.16.44.png

    With the settings configured up to this point, you have configured who sends to whom, and in what format when the "Send with ZIP encryption" feature is configured in the Rule.

  3. Configure the Rule to send ZIP-encrypted files from "Rule Group".
    [Email DLP] Filter Settings - Create / Edit Rule Group
  4. From "Filter", Configure the Address Group for the Sender–Recipient combinations to be processed with ZIP encryption, along with the Rule Group configured in step 3.
    [Email DLP] Filter Settings - Create / Edit Filter

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While we strive to ensure accuracy, we cannot guarantee its reliability or completeness.

In the event of any discrepancies or questions regarding the content, the official Japanese version shall prevail.