Update: Apparently this configuration does work for Samba authentication of the other domain but not SSH. [by drdebate]
The Samba development team has just announced the release of Samba 4.0.
I'm trying to setup an Ubuntu Server with Samba 4 as Active Directory Domain Controller and I'm getting an error when I try to connect from a Windows machine.
Here's Samba's log of the error (I've replaced the name of my domain for privacy):
[2014/07/04 15:09:48.437798, 3] ../source4/auth/kerberos/krb5_init_context.c:80(smb_krb5_debug_wrapper)
Kerberos: AS-REQ [email protected]