Exchange 2010 Routing Group Connector Creation Introduction
Open Exchange Management Shell
Must change the server names script
Server name and domain name
Should be changed Ex2010.domainname.local And mailsrvexvchange Name 2003.domainname.local
New-RoutingGroupConnector -Name “Interop RGC” -SourceTransportServers “Ex2010.domainname.local” -TargetTransportServers “mailsrvexvchange Name 2003.domainname.local” -Cost 100 -Bidirectional $true -PublicFolderReferralsEnabled $true