Is there a way to replicate the free/busy data between Exchange servers using some tool other than the InterOrg Replication tool? My problem is that we are migrating to a new Exchange 2010 setup, but we need to maintain our free/busy sync with a sister company which is still running Exchange 2003. Microsoft informed me that the InterOrg Rep tool is not compatible with Exchange 2010. The only workaround they had available was to install an Exchange 2003 server into our new Exchange 2010 org, and use that new 2003 server only as a public folder repository. We could then use the InterOrg Rep tool to sync between our 2003 server and the sister company's 2003 server, and then use normal public folder replication between our 2003 and 2010 servers.
This certainly sounds like it would work, but it seems like a waste to have an Exchange 2003 server for no other reason than to essentially act as an InterOrg Replication tool translator machine. That being the case, can anyone recommend a potential alternative? Perhaps a 3rd party tool that will do free/busy replication and is compatible with Exchange 2010?