[horde] Listing of users in horde database

[Philipp Faeustlin]

Hi,

I know listing of users, when using imap as backend is not possible.

But there have to be a way to get a complete list of users known by 
horde in its database?

I want to use the "horde-remove-user-data" script on command line to 
remove old user data, but I don't know the usernames of the old users.
I only know the names of the actual users, I don't want to remove.

Regards

Philipp