did u checked in server settings the group is appearing in epo or not add the group user to epo and check whether all are configured correctly or not and check that by giving by-directional trust between two domains if it's working or not
The group is appearing in the epo from domain1. When I log into active directory on domain 1, the group we have added through the trust from domain 2 is there. How does the ePO authenticate the user from domain2, does it originate from the epo, or does it originate through domain1?
I think it is originate through domain1 why because it is appearing in epo from domain1