[Email DLP] List of Setup Procedures (Microsoft 365)

Target

This article is intended for customers who use Microsoft 365 and are starting to use Email DLP.

Purpose

Connect Microsoft 365 with Email DLP and confirm that emails are routed through Email DLP.

Notes

1. The content of this article is based on the product as of August 2025 and is subject to change without notice.

Table of Contents

Preparation

1. Email DLP service permission settings
2. Email DLP login permission settings
3. Adding SPF record
4. Adding DKIM record
5. Adding DMARC record
6. Sending screenshots of the [Mail flow] - [Rules] and [Connectors] screens in the Exchange Online admin center
7. Disabling creation of Rich Text Format emails in the Outlook application

Settings to sync groups from Microsoft 365 to Email DLP (optional)

1. Group sync settings from Microsoft 365 to Email DLP
2. Create synced address group

Secure Download for Box Enablement Settings

1. Secure Download for Box enablement procedure

Email DLP Settings

1. Email DLP operation policy settings

Connecting Email DLP and Microsoft 365

1. Configure to route only emails from specific senders through Email DLP
2. Email DLP connection procedure
3. Configure to send emails from specific senders without routing through Email DLP
4. Email DLP operation test

Preparation

1. Email DLP service permission settings
2. Email DLP login permission settings
3. Adding SPF record
4. Adding DKIM record
5. Adding DMARC record
6. Sending screenshots of the [Mail flow] - [Rules] and [Connectors] screens in the Exchange Online admin center
   If rules already exist on the [Mail flow] - [Rules] and [Connectors] screens in the Exchange Online admin center, please take screenshots of the screens and send them to HENNGE.
7. Disabling creation of Rich Text Format emails in the Outlook application

Settings to sync groups from Microsoft 365 to Email DLP (optional)

1. Group sync settings from Microsoft 365 to Email DLP
2. Create synced address group
   Refer to the following article to create groups to be synced from Microsoft 365.
   Address Settings - Creating/Editing Synced Address Groups

Secure Download for Box Enablement Settings

1. Secure Download for Box enablement procedure
   * This step is only required for customers who have subscribed to Secure Download for Box.

Email DLP Settings

1. Email DLP operation policy settings
   Configure Email DLP settings according to your operation policy, such as retention time for sent emails and encryption rules for attachments.

Connecting Email DLP and Microsoft 365

1. Configure to route only emails from specific senders through Email DLP
   * Configure this if you want to restrict which senders' emails are routed through Email DLP.
2. Email DLP connection procedure
3. Configure to send emails from specific senders without routing through Email DLP
   * Perform this configuration as needed.
4. Email DLP operation test