$RecvConn = Get-ReceiveConnector "Relay Connector"
Get-Content .\newips.txt | foreach {$RecvConn.RemoteIPRanges += "$_"}
Set-ReceiveConnector "Relay Connector" -RemoteIPRanges $RecvConn.RemoteIPRanges
$RecvConn = Get-ReceiveConnector "Relay Connector"
Get-Content .\newips.txt | foreach {$RecvConn.RemoteIPRanges += "$_"}
Set-ReceiveConnector "Relay Connector" -RemoteIPRanges $RecvConn.RemoteIPRanges