I was installing Blackberry Enterprise Server 5.03 on a Small Business Server 2008 Box. Following through the receommend guide here http://www.edutech.me.uk/bes-express/installing-bes-express-on-sbs2008-server/

However after the reboot of the server it brought up the Database Management prompt and would not allow me to select a Local Server even though I had asked the Blackberry setup to create a New Database. Looking through the SQL Server 2005 Configuration it didn’t look like the BLACKBERRY Database had been setup. After a brief look online it looks like the blackberry account ( besadmin ) setup needs to modify through Active Directory via the following:

Account tab > Account options: Select option: Use Kerberos DES encryption types for this account.

I made the change, uninstalled the software and went through re installation again , and after the reboot , the database had been created this time and setup was able to complete