確認DAG不會自動啟動於該台伺服器<結果應為Blocked>
Get-MailboxServer <ServerName> | Format-List DatabaseCopyAutoActivationPolicy

此範例會將伺服器 MBX2 上的資料庫副本設定為封鎖啟動
Set-MailboxServer -Identity MBX2 -DatabaseCopyAutoActivationPolicy Blocked

[清洗傳輸佇列]確認Queue往此伺服器的信件已消耗完畢
Get-Queue -Server <ServerName>

如果仍有信件，請執行以下指令清空清空傳輸佇列，並重啟MSExchangeTransport服務
Set-ServerComponentState <ServerName> -Component HubTransport -State Draining -Requester Maintenance

回復動作
Set-ServerComponentState <ServerName> -Component HubTransport -State Active -Requester Maintenance

Set-MailboxServer -Identity Ex2016 -DatabaseCopyAutoActivationPolicy Unrestricted

確認伺服器目前狀態
Get-MailboxDatabaseCopyStatus
Get-MailboxDatabaseCopyStatus -Server ex2016-dag

在該台伺服器以Localhost的方式登入ECP/OWA，確認登入正常



Install-WindowsFeature Server-Media-Foundation, NET-Framework-45-Features, RPC-over-HTTP-proxy, RSAT-Clustering, RSAT-Clustering-CmdInterface, RSAT-Clustering-Mgmt, RSAT-Clustering-PowerShell, WAS-Process-Model, Web-Asp-Net45, Web-Basic-Auth, Web-Client-Auth, Web-Digest-Auth, Web-Dir-Browsing, Web-Dyn-Compression, Web-Http-Errors, Web-Http-Logging, Web-Http-Redirect, Web-Http-Tracing, Web-ISAPI-Ext, Web-ISAPI-Filter, Web-Lgcy-Mgmt-Console, Web-Metabase, Web-Mgmt-Console, Web-Mgmt-Service, Web-Net-Ext45, Web-Request-Monitor, Web-Server, Web-Stat-Compression, Web-Static-Content, Web-Windows-Auth, Web-WMI, Windows-Identity-Foundation, RSAT-ADDS