diff --git a/admin_manual/configuration_user/index.rst b/admin_manual/configuration_user/index.rst
index ec904faec..7a06f853c 100644
--- a/admin_manual/configuration_user/index.rst
+++ b/admin_manual/configuration_user/index.rst
@@ -10,7 +10,6 @@ User management
     reset_user_password
     user_password_policy
     two_factor-auth
-    user_auth_ftp_smb_imap
     user_auth_ldap
     user_auth_ldap_cleanup
     user_auth_ldap_api
diff --git a/admin_manual/configuration_user/user_auth_ftp_smb_imap.rst b/admin_manual/configuration_user/user_auth_ftp_smb_imap.rst
deleted file mode 100644
index d61b69577..000000000
--- a/admin_manual/configuration_user/user_auth_ftp_smb_imap.rst
+++ /dev/null
@@ -1,9 +0,0 @@
-==================================================
-User authentication with IMAP, SMB, FTP and others
-==================================================
-
-You may configure additional user backends with the 
-External User Backends (user_external) app.
-
-See https://github.com/nextcloud/user_external#readme 
-for an up to date documentation.