[Email DLP] How to Add an SPF Record

Action summary

This article explains how to register the SPF record used by Email DLP in DNS for customers using Email DLP.

Notes

1. This procedure must be completed before connecting Email DLP.
2. This procedure is required for all custom domains you plan to use.
3. HENNGE does not have access to your network's DNS settings.
   To perform this procedure, your domain administrator or domain management service provider may need to take action.
4. The content of this article is based on the product specifications as of June 2026 and is subject to change without notice.

Procedure

Adding an SPF record

1. Add the SPF record for Email DLP to the DNS of your domain.

   include:spf.mta.hdems.com

   Only one SPF record can be set per domain.
   Do not create multiple SPF records for a domain; instead, add "include:spf.mta.hdems.com" to the existing SPF record.

   Example settings
   ・ Microsoft 365

   v=spf1 include:spf.protection.outlook.com include:spf.mta.hdems.com ~all

   ・ Google Workspace

   v=spf1 include:_spf.google.com include:spf.mta.hdems.com ~all

Verifying SPF record settings

1. Verify that the SPF record has been set correctly.
   Refer to the following procedure to check the status of the SPF record from the Email DLP admin console.
   [Email DLP] How to check if the SPF record is registered correctly
   * It may take some time for the settings to take effect.