I am getting an error message to unknow user on my domain. I would like to know is this just a phishing spam email or it was really send from our domain? I have changed our domain name to OURDOMAIN.COM
I have Exchange 2010 installed.
Body of the email is
Delivery has failed to these recipients or distribution lists: sales The recipient's e-mail address was not found in the recipient's e-mail system. Microsoft Exchange will not try to redeliver this message for you. Please check the e-mail address and try resending this message, or provide the following diagnostic text to your system administrator. Sent by Microsoft Exchange Server 2007 Diagnostic information for administrators: Generating server: murraygroup.local sales@OURDOMAIN.com #550 5.1.1 RESOLVER.ADR.RecipNotFound; not found ## Original message headers: Received: from ironport.mih.co.uk (10.10.29.9) by mih-exca-01.murraygroup.local (10.10.29.133) with Microsoft SMTP Server id 18.104.22.168; Fri, 29 Jun 2012 12:36:12 +0100 Received: from glamf04.netintelligence.com (HELO mailfilter.iomart.com) ([22.214.171.124]) by ironport.mih.co.uk with SMTP; 29 Jun 2012 12:42:48 +0100 Received: from glamta4.netintelligence.com(localhost.localdomain[127.0.0.1]) by mailfilter.iomart.com ; Fri, 29 Jun 2012 12:37:18 BST Received: from [126.96.36.199] ([188.8.131.52]) by glamta4.netintelligence.com (8.13.1/8.12.8) with ESMTP id q5TBbH4j022142 for <sales@OURDOMAIN.com>; Fri, 29 Jun 2012 12:37:18 +0100 Date: Fri, 29 Jun 2012 12:37:17 +0100 Message-ID: <20120629145229.4C2A817231D8A7958044@SONW> From: Ines Hampton <CarmenF77297@OURDOMAIN.COM> To: sales <sales@OURDOMAIN.com> Reply-To: Marguerite Soto <OrvalBCC70@brighterhorizons.org> Subject: User sales MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Return-Path: CarmenF77297@OURDOMAIN.COM eporting-MTA: dns;murraygroup.local Received-From-MTA: dns;ironport.mih.co.uk Arrival-Date: Fri, 29 Jun 2012 11:36:12 +0000 Final-Recipient: rfc822;sales@OURDOMAIN.com Action: failed Status: 5.1.1 Diagnostic-Code: smtp;550 5.1.1 RESOLVER.ADR.RecipNotFound; not found X-Display-Name: sales