So after some fun'n'games (see thread 17707 "Refusal of BES connector to install") getting the test server up and working, it all got there in the end. Great.
The production W2k8R2 server (built from the same Win & Office media as the test server) installed smoothly - but it won't talk to the Scalix server! The Outlook (2003) profiles are setting up without a problem - talking to the server correctly - but I'm having no joy from there in.
If I try and start Outlook, I get "Unable to open your default eMail folders. The information store could not be opened."
If I use the BES IEMSTest util, I get "OpenMsgStore() for this profile failed (80040111)"
The BESAdmin user is set up in Scalix - and opens correctly in SWA.
The same happens if I try to set Outlook up on the BES server using a different Scalix user.
If I set BESAdmin up in Outlook on another machine (O2k7 on XP), it opens quite happily.
One thought - could it be a licence issue? I've swapped the permanent licence key file for the new one with "Option: Name=BES:Expiry=<date>" - and the licence key in that file is being reflected in SAC - but there's no mention of BES when you view the licence through the admin console.
Another slightly strange wrinkle - W2k8's update is not offering any updates for Outlook 2k3.