DNN_ActiveDirectoryAuthentication can't authenticate AD account Server in different domain

[pattisp1]

DNN_ActiveDirectory IIS Server in Different Domain than AD Users and users can not authenticate

DNN_ActiveDirectoryAuthentication Extension IIS server in different domain than AD users and LDAP. I can set up DNN_ActiveDirectoryAuthentication Extension but when I try and validate the AD user in the web page it says password is invalid.

IIS Web Server in abc.xxx.com and LDAP is in def.xxx.com Both Domains have a Trust. The set up in the screen shot is successful. But the only domain in the network that shows is the Server domain abc.xxx.com.

When we try and authenticate through the webpage for an AD user in the def.xxx.com we get password is invalid.

Does the both domains need to be shown even though in the screen shot of the Site Settings everything is connection successfully.

DNNSiteSettings.docx