Return-Path: <> Delivered-To: email@example.com Received: from xxxxxxxxx.hpdns.net by xxxxxxxxx.hpdns.net.openstacklocal with LMTP id YL/AONaT+l6sLC0AihdaCg (envelope-from <>) for firstname.lastname@example.org; Tue, 30 Jun 2020 02:22:30 +0100 Return-path: <> Envelope-to: email@example.com Delivery-date: Tue, 30 Jun 2020 02:22:30 +0100 Received: from mailnull by xxxxxxxxx.hpdns.net with local (Exim 4.93) id 1jq4yk-00CQf7-RE for firstname.lastname@example.org; Tue, 30 Jun 2020 02:22:30 +0100 X-Failed-Recipients: email@example.com Auto-Submitted: auto-replied From: Mail Delivery SystemMailer-Daemon@xxxxxxxxx.hpdns.net To: firstname.lastname@example.org References:email@example.com Content-Type: multipart/report; report-type=delivery-status; boundary=1593480150-eximdsn-2072911058 MIME-Version: 1.0 Subject: Mail delivery failed: returning message to sender Message-Id:E1jq4yk-00CQf7-RE@xxxxxxxxx.hpdns.net Date: Tue, 30 Jun 2020 02:22:30 +0100
Return-path: firstname.lastname@example.org Received: from [::1] (port=39982 helo=xxxxxxxxx.hpdns.net) by xxxxxxxxx.hpdns.net with esmtpa (Exim 4.93) (envelope-from email@example.com) id 1jq4yh-00CQdv-Uw for firstname.lastname@example.org; Tue, 30 Jun 2020 02:22:28 +0100 MIME-Version: 1.0 Date: Tue, 30 Jun 2020 02:22:27 +0100 From: email@example.com To: firstname.lastname@example.org Subject: test User-Agent: Roundcube Webmail/1.4.4 Message-ID:email@example.com X-Sender: firstname.lastname@example.org Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 7bit X-cPanel-MailScanner-Information: Please contact the ISP for more information X-cPanel-MailScanner-ID: 1jq4yh-00CQdv-Uw X-cPanel-MailScanner: Found to be clean X-cPanel-MailScanner-SpamCheck: X-cPanel-MailScanner-From: email@example.com X-Spam-Status: No
We've seen one other incident recently of this error message and after a detailed anlaysis it was tracked down to a mis-configured mail server at the sender's end. The message is very strange because if it were generally true all VM's e-mail domains would stop working, and we would be flooded with queries. More pertinently all your e-mail addresses with VM would be failing too. And they aren't.
If I were betting on what you have posted (and you did a great job here) I would not put this down to a fault with VM.