Openldap AD Proxy?

Question

Active Directory

Please help me understand how Openldap works.
I want to set up an Openfire server to serve two domains. I read about Openldap, they say this is what you need. But there's no way to set it up.
There is Ubuntu Server 14.04.3 LTS, on it Openfire 3.10.0 and installed slapd, ldap-utils. Two corporate networks are connected via VPN.
I would like users of two domains to be able to log in to this Openfire server. That is, you need to configure Openldap so that it requests information from domain controllers.
While I'm trying to configure Openldap to see at least one domain.
Now the config looks like this:

cat /etc/ldap/ldap.conf
BASE    cn=users,cn=office,dc=company,dc=ru
URI     ldap://srv1.company.ru

cat /etc/ldap/slapd.conf
include     /etc/ldap/schema/core.schema
include     /etc/ldap/schema/cosine.schema
include     /etc/ldap/schema/inetorgperson.schema
include     /etc/ldap/schema/nis.schema
include     /etc/ldap/schema/samba.schema

modulepath              /var/lib/ldap
moduleload              back_ldap

pidfile     /var/run/slapd/slapd.pid
argsfile    /var/run/slapd/slapd.args

defaultsearchbase "OU=users,OU=office,DC=company,DC=ru"

idletimeout 60

access to * by * read

### Proxy to AD company.ru ####################
database                ldap
suffix                  "OU=users,OU=office,DC=company,DC=ru"
readonly                yes
protocol-version        3
uri                     "ldap://srv1.company.ru"
rebind-as-user
idassert-bind bindmethod=simple
binddn= "CN=openfire,CN=Managed Service Accounts,DC=company,DC=ru"
rootpw {SSHA}ViOcMGF7U8VV+/NV7F4sQwM78
credentials=open
mode=none
idassert-authzFrom “*”

loglevel                0

I restart the server

sudo service slapd restart
 * Stopping OpenLDAP slapd   [ OK ]
 * Starting OpenLDAP slapd    [ OK ]

netstat -al
Активные соединения с интернетом (servers and established)
tcp        0      0 *:ldap                  *:*                     LISTEN
tcp6       0      0 [::]:ldap               [::]:*                  LISTEN

And here I can't understand how the server works. The ldapsearch command does not return any results, although, as I understand it, it should return all accounts in AD.

ldapsearch -h localhost -x
# extended LDIF
#
# LDAPv3
# base <cn=users,cn=office,dc=company,dc=ru> (default) with scope subtree
# filter: (objectclass=*)
# requesting: ALL
#

# search result
search: 2
result: 32 No such object

# numResponses: 1

Answer 1

BASE dc=company,dc=ru
Try searching from the root

Answer 2

Addendum:
It turns out that in the new version of Openldap, all configuration is done with cn=config, and slapd.conf is no longer used. Moreover, when changing cn=config, the changes are applied automatically, without restarting slapd.