UPDATED:

Since creating the script below, I've put together a simpler one that works the same:

SELECT CAST(ServerDN AS VARCHAR(256)) , COUNT (*)
FROM UserConfig
GROUP BY CAST(ServerDN AS VARCHAR(256))

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RadHaz75 @ port3101.org posted a request for a SQL script to count the number of BES users per mail server in his BlackBerry Configuration Database.

I've posted the script in the thread, but here it is...