I have 2 domains (a.contoso.com and b.contoso.com) in 2 different domain controllers (DCA and DCB) with a trust relationship between them.
In the DCB is running a web application under IIS 6 with windows auhtentication and integrated windows authentication. This application is responsible for updating an AD property in the domain a.contoso.com in DCA. When the code runs I get an error because the credential that is being sent to AD in DCA is DCB$ (computer account) instead of the account of the logged user.
Anyone has an ideia of what is happening or how can I solve this issue?

Regards.