I am trying to install a Zentyal Community Edition server to act as an RODC for my network. It's basically a backup DNS Server/DC in case one of our virtual hosts goes down. Every time I try to join the Zentyal server as an additional DC using the web console, I get a samba error. When I attempt to join using the console, for troubleshooting purposes, I notice that the process hangs up at an AD entry for exchange OWA. Does anyone have any advice on how to work around this issue?