UNAB Registration Failed Due to Missing DNS Settings

Symptom:

When I try to register UNAB with Active Directory, I receive the following error message:

Cannot find RRs for LDAP services in <domain_name> domain

Solution:

UNAB registration failed because the DNS settings are not configured in Active Directory.

To troubleshoot this issue, do the following:

Run the uxpreinstall utility to check the DNS settings.
Review the output of the uxpreinstall utility to identify the DNS settings.
If incorrect, update the DNS settings in the following file:
```
/etc/resolv.conf
```