I have created a child domain (ssw.aepco-ssw.com) within an existing forest (aepco-ssw.com). When I try to logon onto the ssw domain with a aepco-ssw account it fails. The trusts between the child domain and the parent domain are in place and verified. When I replicate between the 2 domain controllers (TUC-DC in the ssw domain and SSW-DC1 in the aepco-ssw domain) I don’t get any errors.