When clicking on the "Choose Folders for Redirection" link within BES I get the error:
"Failed to retrieve folder redirection settings for the selected user. Please ensure that the MAPI Profile you used to login to Exchange has sufficient permissions to read and modify the BlackBerrry configuration data stored in the users' mailbox."
I've got two MAPI profiles (as per the doco) both using my email@example.com account which is set as an administrator account on the mail server.
Anything within BES that talks to the MAPI profile / Zimbra server results in a similar error.
So there you go more info, hope this helps.