Exchange 2010 SP1 now supports InterOrg BUT…

It’s important to stress that although Exchange 2010 SP1 includes support for the InterOrg tool, you must make sure you do the following to get it working properly:

  • Use a 32-bit based Windows 2003/R2 Server
  • Install the Exchange 2003 System Manager on the machine running InterOrg
  • If enabled, disable the RPC encryption requirement on the CAS server used by InterOrg
  • One of the InterOrg endpoints needs to be an Exchange 2003 server (no direct Exchange 2010 < > Exchange 2007 replication)

With Exchange 2010 RTM, there were both issues on the Exchange side and with the tool itself, and the tool still hasn’t been updated to support Exchange 2010 SP1. I’ve also update my old InterOrg blog post with this information.

The relevant TechNet documentation has been updated to reflect support for InterOrg directly against Exchange 2010 SP1

Until later,

Henrik Walther
Technology Architect/Writer
MCM: Exchange 2007 | MVP: Exchange Architecture

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