Занимает много место Exchange Server\V15\TransportRoles\data\Temp\UnifiedContent

Пример скрипта который удаляет все что старше 14 дней:
The Unified Content folder is within a “temp” folder and contains uniquely named files of several MB created multiple of times per day. Not much information is available about the purpose of the Unified Content folder but it appears to be part of the anti-malware scanning feature which many disable during installation. It was reported in Exchange 2013 releases prior to CU 5 that this folder was growing to significant sizes. It appears that this feature has been carried into Exchange 2016 (confirmed in CU 10). We can manage the growth of this folder by deleting anything greater than a month old.

#Days to go back
$Limit2 = (Get-Date).AddDays(-14)
$Paths2 = "C:\Exchange Server\V15\TransportRoles\data\Temp\UnifiedContent"

foreach ($Path in $Paths2) {
# Delete files older than the $Limit2 through directory structure
Get-ChildItem -Path $path -Recurse -Force | Where-Object { !$_.PSIsContainer -and $_.CreationTime -lt $Limit2 } | Remove-Item -Force
}