I'd like to install a multi-tenant UCMDB where the probe server is in a different domain than the application server, is that possible? We have a firewall rule to connect them so that's not a problem.
I'm concerned about authentication between the server and the probe, how is that handled, I can't seem to find a config file for it?
If by "domain" you mean Active Directory and/or DNS, this is not a problem. The probe could be in WORKGROUP, for all I have been able to ascertain.