Hello there,
Use the Get-MessageTrackingReport cmdlet to return data for a specific message tracking report. This cmdlet is used by the delivery reports feature.
In Exchange Online, delivery reports has been replaced by message trace (the Get-MessageTrace and Get-MessageTraceDetail cmdlets). https://learn.microsoft.com/en-us/powershell/module/exchange/get-messagetrackingreport?view=exchange-ps
Hope this resolves your Query !!
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