[Tadrill] Connection Filters Settings (Microsoft 365)

Action summary

This article describes how to configure connection filters in Microsoft 365 to prevent emails sent from Tadrill from being classified as spam. You will Add the IP addresses found in the Tadrill admin console to the allow list.

Important Notes

1. The content of this article is based on the product specifications as of July 2026 and is subject to change without notice.
2. The credentials (username and password) of a Global Admin account for your Microsoft 365 tenant are required to complete this procedure.
3. The required configuration values are displayed within the Tadrill admin console.
   Please ensure you have an account that can log in to the Tadrill admin console.
   Upon first login, only the initial admin designated at the time of application can log in to Tadrill.

Steps

1. Access the following page using your Microsoft 365 Admin account.
   https://security.microsoft.com/antispam (Microsoft Defender – Policies & rules – Anti-spam policies) (External link)
2. Click Connection filter policy (Default).
   ※ Please click on the text.
3. Click Edit connection filter policy.
4. Follow the steps below to check the Ip address and Add it to the "Always allow messages from the following IP addresses or address range:" field.
5. How to check the Ip address
   1. Log in to the Tadrill admin console.
      [Tadrill] How to log in to the admin console
   2. Click [Training Emails] in the left menu.
   3. Click [Create] in the upper-right corner of the screen.
   4. Select [Insert phishing URL in the mail body] and click [Proceed].
   5. From the template displayed on the left side of the screen, select [For connection Settings: Tadrill Domain/IP address].
   6. From the content displayed in the email composition screen, check the two Ip address entries.
      ※ Enter each Ip address one at a time and click to Add it.
      ※ You may need to press the Enter key to confirm each entry.
6. Click [Save].
   ※ When saving the edited connection filter policy, the following message may appear and prevent you from saving:
   "The command you attempted to run isn't currently allowed in your organization. To run this command, you first need to run the command Enable-OrganizationCustomization."
   If this occurs, please run the Enable-OrganizationCustomization command in PowerShell. (External link)
   ※ Please allow up to 60 minutes for the changes to take effect.

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