Never mind, I figured it out. I didn't realize that the documentation for LDAP said to configure the username as the DN entry.
The user name that you want to use to connect to the directory service. For LDAP servers, enter the distinguished name (DN) of the user that you want to use to connect. For example, you might enter cn=username,dc=your-local-domain,dc=lan.
So I changed it to the following:
Obviously, the real names were changed.