OX Appliance Edition Hostname change :(

[monddia]

Okay found my Problem I have change the ip adress..

[monddia]

Hello

I have a Problem.. i have installed for 2 Weeks OX Appliance Edition.. its wonderful

But i have Chnage the Hostname in the Univention Management Console under Basic Settings.. i have restart the Server.. but he is soooo slowly..

I have change the Hostname mail.***.de to xchange.***.de

I cant Login to the Open Xchange fronted for my Emails and Contacts.. please help me!!