[horde] forbidden characters in password ?

[Markus Boettger]

Hi,

I have horde/imp/turba/vacation running without any problem (hundreds of 
users).

Now a user cannot login to horde/imp and I would like to know why.
The mailserver answeres FAILED LOGIN as result of the IMAP-dialogue.

The user does use special chars like / \ % $ in his password.
Is it possible that php does not transport all chars correct?
Will I have to generally forbid some special chars in passwords?

Thanks,
Markus