单项选择题 You deploy a Microsoft Exchange mobile messaging solution that uses Microsoft Windows Mobile 5.0 with Microsoft Messaging and Security Feature Pack.   The messaging infrastructure is configured to support the remote wipe feature.   When an administrator attempts to perform a remote wipe of a Windows Mobilebased device， the administrator receives a 401 error message.   You need to ensure that the administrator is authorized to perform remote wipes only.   What should you do？（）