清查公司M365是否有啟動MFA多因素驗證

如何確認使用者已設置為必須使用 Microsoft Entra 多重驗證 (MFA) - Microsoft Entra ID | Microsoft Learn
https://learn.microsoft.com/zh-tw/entra/identity/authentication/how-to-mandatory-multifactor-authentication

Install-Module MsIdentityTools -Scope CurrentUser

Connect-MgGraph -Scopes Directory.Read.All, AuditLog.Read.All, UserAuthenticationMethod.Read.All

Export-MsIdAzureMfaReport .\report.xlsx

從共用信箱傳送的郵件不會儲存至 [傳送的郵件] 資料夾

https://learn.microsoft.com/zh-tw/troubleshoot/exchange/user-and-shared-mailboxes/sent-mail-is-not-saved

set-mailbox <mailbox name> -MessageCopyForSendOnBehalfEnabled $True