In my ongoing distraction from working on the Akonadi Exchange resource, we released OpenChange 0.9 today.
Release notes:
Improved portability, including a focus on supporting FreeBSD, OpenSolaris and other systems that do not use GNU libraries / shells; and portability fixes for use of the Intel C Compiler and Sun Studio compiler. 64 bit architectures should be better supported in this release.
Preliminary support for Exchange 2003/2007 specific protocols (EcDoConnectEx and EcDoRpcExt2) was added, and redirection support was implemented. This should fix the ecWrongServer (0x478) error that some users encountered while running openchange based software in a clustered Exchange environment. Note that OpenChange is regularly tested with Exchange 2003 and Exchange 2007.
Support for encrypted communications between client and server has been added.