Exchange comes with default tarpit levels which work for some organizations but not others, you can change these if you see a delay in delivery, to change it is very easy and you need to do this with PowerShell.

Launch the Exchange Management Shell (EMS) and run the following command:

  • Get-ReceiveConnector -Identity “Server1\Default Frontend Server1” | Set-ReceiveConnector -TarpitInterval 00:00:00 -MaxAcknowledgementDelay 00:00:00 -MaxInboundConnection unlimited -MaxInboundConnectionPerSource unlimited –

Change Server1 to your server name.

Let the changes replicate.

Hope it helps.

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