Credencial inválida após definir usuários e UO

Primeiro defino uma nova UO com o LDIFseguinte ldapadd -x -D "cn=admin,dc=nodomain" -W -f ./ou.ldif:

root@debian:~# cat ou.ldif 
dn: OU=People,DC=nodomain
objectClass: organizationalUnit
ou: People
description: Organizational Unit for Sales Department

Após a autenticação, o ldap adicionou minha UO ao ldap.

Então adicionei meu users.ldif no ldap via:

root@debian:~#  ldapadd -x -H ldap:/// -D "cn=admin,dc=nodomain" -W -f ./users.ldif
Enter LDAP Password: 
adding new entry "uid=root,ou=People,dc=nodomain"
adding new entry "uid=daemon,ou=People,dc=nodomain"
adding new entry "uid=man,ou=People,dc=nodomain"
adding new entry "uid=noody,ou=People,dc=nodomain"
adding new entry "uid=systemd_network,ou=People,dc=nodomain"
adding new entry "uid=tss,ou=People,dc=nodomain"
adding new entry "uid=systemd-coredump,ou=People,dc=nodomain"
adding new entry "uid=systemd-timesync,ou=People,dc=nodomain"
adding new entry "uid=messagebus,ou=People,dc=nodomain"
adding new entry "uid=usbmux,ou=People,dc=nodomain"
adding new entry "uid=sshd,ou=People,dc=nodomain"
adding new entry "uid=dnsmasq,ou=People,dc=nodomain"
adding new entry "uid=avahi,ou=People,dc=nodomain"
adding new entry "uid=speech-dispacher,ou=People,dc=nodomain"
adding new entry "uid=fwupd-refresh,ou=People,dc=nodomain"
adding new entry "uid=saned,ou=People,dc=nodomain"
adding new entry "uid=sddm,ou=People,dc=nodomain"
adding new entry "uid=geoclue,ou=People,dc=nodomain"
adding new entry "uid=polkitd,ou=People,dc=nodomain"
adding new entry "uid=rtkit,ou=People,dc=nodomain"
adding new entry "uid=colord,ou=People,dc=nodomain"
adding new entry "uid=gnome-initial-setup,ou=People,dc=nodomain"
adding new entry "uid=tcpdump,ou=People,dc=nodomain"
adding new entry "uid=postgres,ou=People,dc=nodomain"
adding new entry "uid=mohsen,ou=People,dc=nodomain"
adding new entry "uid=redis,ou=People,dc=nodomain"
adding new entry "uid=pulse,ou=People,dc=nodomain"
adding new entry "uid=Debian-gdm,ou=People,dc=nodomain"
adding new entry "uid=hplip,ou=People,dc=nodomain"
adding new entry "uid=strongswan,ou=People,dc=nodomain"
adding new entry "uid=libvirt-qemu,ou=People,dc=nodomain"
adding new entry "uid=nobody,ou=People,dc=nodomain"
adding new entry "uid=systemd-network,ou=People,dc=nodomain"
adding new entry "uid=mysql,ou=People,dc=nodomain"
adding new entry "uid=avahi-autoipd,ou=People,dc=nodomain"
adding new entry "uid=_galera,ou=People,dc=nodomain"
adding new entry "uid=ftp,ou=People,dc=nodomain"
adding new entry "uid=speech-dispatcher,ou=People,dc=nodomain"
adding new entry "uid=Debian-exim,ou=People,dc=nodomain"
adding new entry "uid=gnome-remote-desktop,ou=People,dc=nodomain"
adding new entry "uid=cups-pk-helper,ou=People,dc=nodomain"

Tudo está ok, mas quando quero pesquisar via:

root@debian:~# ldapsearch -L  -H ldap:/// -b cn=People,dc=nodomain,cn=admin ou
SASL/SCRAM-SHA-512 authentication started
Please enter your password: 
ldap_sasl_interactive_bind: Invalid credentials (49)
    additional info: SASL(-13): user not found: no secret in database

Antes de definir a UO e adicionar usuários, não tive nenhum problema com a autenticação.

Como posso resolver isso?