Hello, are you asking why the M mailbox of South China Normal University can't be activated? Due to authentication failure, the M mailbox of South China Normal University cannot be activated. South China Normal University's M-mail system is a free, multi-functional and large-capacity new mailbox service provided by the school in cooperation with Tencent's enterprise mailbox. The user's identity information needs to be verified when the mailbox is activated. When the identity information fails, the activation will fail, and the user only needs to re-authenticate according to the steps.