Get Exchange Back Pressure Status and Thresholds Summary.

Get-BackPressureStatus.ps1

# Longer version: https://github.com/JeremyTBradshaw/PowerShell/blob/main/Get-BackPressureStatus.ps1
# Reference: https://learn.microsoft.com/en-us/exchange/mail-flow/back-pressure#view-back-pressure-resource-thresholds-and-utilization-levels

$TransportServers = Get-TransportService
$backPressureDiagInfo = foreach ($srv in $TransportServers) {

    [xml]$perServerBPDiagInfo = Get-ExchangeDiagnosticInfo -Server $srv.Name -Process EdgeTransport -Component ResourceThrottling
    foreach ($rsrc in $perServerBPDiagInfo.Diagnostics.Components.ResourceThrottling.ResourceTracker.ResourceMeter) {
    
        $rsrc | Select-Object @{Name = 'Server'; Expression = { $srv.Name } },
        @{Name = 'Resource'; Expression = { $_.Resource -replace '\[.*' } },
        CurrentResourceUse,
        PreviousResourceUse,
        Pressure,
        @{
            Name = 'PressureTransitions'
            Expression = { $_.PressureTransitions -replace '(Pressure.*\:\s)|(ow)|(edium)|(igh)' -replace '(To)', '>' }
        }
    }
}

# What to do with $backPressureDiagInfo?  Here are some ideas:
$backPressureDiagInfo | Format-Table -GroupBy Server
$backPressureDiagInfo | Export-Csv -Path $Home\Downloads\BackPressureStatus.csv -NTI