Hello, I am seeing the following error in some email directed to hotmail:
<lachec...@hotmail.com>: host hotmail-com.olc.protection.outlook.com[104.47.46.33] refused to talk to me: 501 5.5.4 Invalid domain name [BN3NAM04FT008.eop-NAM04.prod.protection.outlook.com]Return-Path: < facturac...@zonanet.com.ar> Received: from smarthost04-ded.dattaweb.com (localhost [127.0.0.1]) by smarthost04-ded.dattaweb.com (Postfix) with ESMTPS id 2D3959201C6 for <lachec...@hotmail.com>; Fri, 3 Apr 2020 09:42:20 -0300 (-03) Received: from vps-1683944-x.dattaweb.com (vps-1683944-x.dattaweb.com [66.97.41.242]) by smarthost04-ded.dattaweb.com (Postfix) with ESMTPS id 06B8892021B for <lachec...@hotmail.com>; Fri, 3 Apr 2020 09:42:20 -0300 (-03) Received: from [190.225.223.13] (helo=ZNServer) by vps-1683944-x.dattaweb.com with esmtpa (Exim 4.92.3) (envelope-from <facturac...@zonanet.com.ar>) id 1jKLeB-0001qo-HO for lachec...@hotmail.com; Fri, 03 Apr 2020 09:42:07 -0300 MIME-Version: 1.0 From: "ZonaNet" <facturac...@zonanet.com.ar> To: lachec...@hotmail.com Date: 3 Apr 2020 09:42:05 -0300 Any ideas? The configuration of the reverse of the sending IP and the server hostname is correct. [root@smarthost04-ded ~] # host vps-1683944-x.dattaweb.com vps-1683944-x.dattaweb.com has address 66.97.41.242 vps-1683944-x.dattaweb.com has IPv6 address 2800:6c0:3::887
