diff --git a/canaille/configuration.py b/canaille/configuration.py
index c9347963..dbac99b8 100644
--- a/canaille/configuration.py
+++ b/canaille/configuration.py
@@ -2,6 +2,7 @@ import ldap
 import os
 import smtplib
 import socket
+import uuid
 
 from cryptography.hazmat.primitives import serialization as crypto_serialization
 from cryptography.hazmat.primitives.asymmetric import rsa
@@ -31,12 +32,13 @@ def validate(config, validate_remote=False):
 
 
 def validate_ldap_configuration(config):
+    from canaille.models import User, Group
+
     try:
         conn = ldap.initialize(config["LDAP"]["URI"])
         if config["LDAP"].get("TIMEOUT"):
             conn.set_option(ldap.OPT_NETWORK_TIMEOUT, config["LDAP"]["TIMEOUT"])
         conn.simple_bind_s(config["LDAP"]["BIND_DN"], config["LDAP"]["BIND_PW"])
-        conn.unbind_s()
 
     except ldap.SERVER_DOWN as exc:
         raise ConfigurationException(
@@ -48,6 +50,57 @@ def validate_ldap_configuration(config):
             f'LDAP authentication failed with user \'{config["LDAP"]["BIND_DN"]}\''
         ) from exc
 
+    try:
+        User.ocs_by_name(conn)
+        user = User(
+            objectClass=["inetOrgPerson"],
+            cn=f"canaille_{uuid.uuid4()}",
+            sn=f"canaille_{uuid.uuid4()}",
+            uid=f"canaille_{uuid.uuid4()}",
+            mail=f"canaille_{uuid.uuid4()}@mydomain.tld",
+            userPassword="{SSHA}fw9DYeF/gHTHuVMepsQzVYAkffGcU8Fz",
+        )
+        user.save(conn)
+        user.delete(conn)
+
+    except ldap.INSUFFICIENT_ACCESS as exc:
+        raise ConfigurationException(
+            f'LDAP  user \'{config["LDAP"]["BIND_DN"]}\' cannot create '
+            f'users at \'{config["LDAP"]["USER_BASE"]}\''
+        ) from exc
+
+    try:
+        Group.ocs_by_name(conn)
+
+        user = User(
+            objectClass=["inetOrgPerson"],
+            cn=f"canaille_{uuid.uuid4()}",
+            sn=f"canaille_{uuid.uuid4()}",
+            uid=f"canaille_{uuid.uuid4()}",
+            mail=f"canaille_{uuid.uuid4()}@mydomain.tld",
+            userPassword="{SSHA}fw9DYeF/gHTHuVMepsQzVYAkffGcU8Fz",
+        )
+        user.save(conn)
+
+        group = Group(
+            objectClass=["groupOfNames"],
+            cn=f"canaille_{uuid.uuid4()}",
+            member=[user.dn],
+        )
+        group.save(conn)
+        group.delete(conn)
+
+    except ldap.INSUFFICIENT_ACCESS as exc:
+        raise ConfigurationException(
+            f'LDAP  user \'{config["LDAP"]["BIND_DN"]}\' cannot create '
+            f'groups at \'{config["LDAP"]["GROUP_BASE"]}\''
+        ) from exc
+
+    finally:
+        user.delete(conn)
+
+    conn.unbind_s()
+
 
 def validate_smtp_configuration(config):
     try:
diff --git a/tests/test_configuration.py b/tests/test_configuration.py
index fefc599a..fc86753b 100644
--- a/tests/test_configuration.py
+++ b/tests/test_configuration.py
@@ -1,3 +1,5 @@
+import ldap
+import mock
 import pytest
 from canaille.commands import cli
 from canaille.configuration import validate, ConfigurationException
@@ -47,6 +49,34 @@ def test_ldap_connection_remote_ldap_wrong_credentials(configuration):
         validate(configuration, validate_remote=True)
 
 
+def test_ldap_cannot_create_users(configuration):
+    from canaille.models import User
+
+    def fake_init(*args, **kwarg):
+        raise ldap.INSUFFICIENT_ACCESS
+
+    with mock.patch.object(User, "__init__", fake_init):
+        with pytest.raises(
+            ConfigurationException,
+            match=r"cannot create users at",
+        ):
+            validate(configuration, validate_remote=True)
+
+
+def test_ldap_cannot_create_groups(configuration):
+    from canaille.models import Group
+
+    def fake_init(*args, **kwarg):
+        raise ldap.INSUFFICIENT_ACCESS
+
+    with mock.patch.object(Group, "__init__", fake_init):
+        with pytest.raises(
+            ConfigurationException,
+            match=r"cannot create groups at",
+        ):
+            validate(configuration, validate_remote=True)
+
+
 def test_smtp_connection_remote_smtp_unreachable(configuration):
     configuration["SMTP"]["HOST"] = "smtp://invalid-smtp.com"
     with pytest.raises(