Setting Up a Quarantine Mailbox for Office 365 and Microsoft 365 Email (Exchange Online)

Before you quarantine email messages and attachments, you need to designate and configure a quarantine mailbox.

To set up a quarantine mailbox

1. Navigate to Configuration > Cloud App Store.
2. On the Office 365 and Microsoft 365 tile, click Configure.

3. In the Quarantine Email Address field, enter the email address to which all quarantined email should be routed. This email address will also receive all notifications for quarantined email messages.

   The email address used for quarantined email messages must be a valid email address account within your organization.

4. In the Restore requests approver field, enter the email address(es) of the users who can approve restore requests for quarantined email messages.
5. Click the Advanced heading if you want to customize the email messages that are sent for quarantined email messages.
6. Click Ok.