Samba で Failed to join domain: failed to lookup DC info for domain 'EXAMPLE.COM' over rpc: Access denied エラーが発生する

Issue

• Samba で Failed to join domain: failed to lookup DC info for domain 'EXAMPLE.COM' over rpc: Access denied エラーが発生します。
• net ads join に失敗し、以下のエラーが発生します。

Substituting charset 'UTF-8' for LOCALE
cli_negprot:SMB signing is mandatory and the server doesn't support it.
failed negprot:NT_STATUS_ACCESS_DENIED
libnet_Join:
    libnet_JoinCtx: struct libnet_JoinCtx
        out: struct libnet_JoinCtx
            account_name             :NULL
            netbios_domain_name      :NULL
            dns_domain_name          :NULL
            forest_name              :NULL
            dn                       :NULL
            domain_sid               :NULL
                domain_sid               :(NULL SID)
            modified_config          :0x00 (0)
            error_string             :'failed to lookup DC info for domain 'EXAMPLE.COM' over rpc:Access denied'
            domain_is_ad             :0x00 (0)
            result                   :WERR_ACCESS_DENIED
lang_tdb_init:/usr/lib64/samba/de_DE.UTF-8.msg:File or directory not found
Failed to join domain: failed to lookup DC info for domain 'EXAMPLE.COM' over rpc:Access denied
return code = -1