I've installed a client in an untrusted forest using the following command line
SMSSITECODE = xxx SMSMP=FQDN FSP=FQDN DNSSUFFIX=suffix
I see the machine in SCCM (unapproved but that's expected). However, the client is only partially installed (only two actions in the control panel applet)
Looking at locationServices, I see that the client is looking to AD, then registry then DNS for its location and it's complaining that it can't find anything.
I haven't published site information to the untrusted forest, is that the recommendation?