Hi,
I was running into problems adding a new domain AFTER deploying the ZBC connector successfully. Suddenly, I was not able anymore to activate users (as I was testing on a 1 user BlackBerry server I can not tell if this also applies for existing users).
The solution was found by chance: seems like the change of adding a new domain did not work well for the GAL in ZBC - I had a list of users from both domains, although they existed only on one:
abc@example.com &
abc@example.de
Reinstalling the ZBC and recreating the BlackBerryManager and BlackBerryServer mail profiles helped immediately!
Hope this may help anybody else running into similar problems.