I search for a german documentation to configure my OX.
I want catch emails from a other mailserver with a catchall account and delivery the mails to the ox user.
And i want make group folder for some users and that the mails came in to the group folder and not direct to the user.
OX is not a mailserver, it's a groupware with an integrated E-Mail client. All configuration regarding E-Mail handling needs to be done at the subsystems (SMTP/IMAP). To get E-Mail from a remote mailserver and deliver it to the mailserver you use with your Open-Xchange server i'd recommend using fetchmail - there is a lot of german documentation out there.