Powershell snippet for duplicating receive connectors on new servers. This goes well with my Setup Anonymous Relay on Exchange 2010 Receive Connector post.

New-ReceiveConnector "Anonymous Connector" -Server HT02 -Bindings 0.0.0.0:25 -RemoteIPRanges ( Get-ReceiveConnector "HT01\Anonymous Connector" ).RemoteIPRanges