undelivered_emails_exchange2013.ps1

#Exchange 2013

$ErrorActionPreference= 'silentlycontinue'
$empty="{}"
$internal="[a-z0-9!#\$%&'*+/=?^_`{|}~-]+(?:\.[a-z0-9!#\$%&'*+/=?^_`{|}~-]+)*@yourdomain\.tld$"
Get-MessageTrackingLog -MessageSubject "Undeliverable" | Sort-Object -Property Recipients -Unique | foreach ($_.Recipients){
if(($_.Recipients -ne $empty) -and ($_.Recipients -match $internal)){
echo $_.Recipients
Get-Messagetrackinglog -sender:$_.Recipients -EventID "FAIL" | ft Timestamp, Recipients
                                                       }
}