[turba] How to use turba-import-vcards

[Luca Bertoncello]

Jan Schneider <jan at horde.org> schrieb:

> You may have username hooks or other user name mangling set up in  
> Horde, so that the internal Horde name (that you use with this script)  
> don't match the user name that you enter in the login form.

Well, I let Horde authenticate via IMAP...
I don't have any hook (or better: I cannot find any hooks.php file or other
settings with "hook" in the name).

Where can I search for this hook?

Thanks
Luca Bertoncello
(lucabert at lucabert.de)