Hi,
Thanks for getting back to me.
I have now taken this off to a development environment in which all windows firewalls are disabled and there is no firewall between the two domains.
From the Adaxes add a managed domain I can add 'dev' which is the domain 'dev.net' however when I try and enter credentials it says that 'dev.net' is not operational.
Is there anything else I can test to try and diagnose this?