Are you sure you can access the ldap server from the frontend? Try this:
$ telnet ldap-server.domain.local 636
Maybe I got the connection data wrong. In that case change them to the values in the ldap auth configuration file.
Are you sure you can access the ldap server from the frontend? Try this:
$ telnet ldap-server.domain.local 636
Maybe I got the connection data wrong. In that case change them to the values in the ldap auth configuration file.