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All exchange server alerts are sent to my blackberry. &nbsp;I need a way to find out which computer keeps sending this &nbsp;e-mail that's undeliverable. &nbsp;I looked into the logs on my exchange server 2003 but was unable to find the ip of the computer that initially sent the e-mail. &nbsp;Does anyone know how I can find out which computer on my network is sending this e-mail?<br />
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message did not reach some or all of the intended recipients.<br />
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&nbsp; &nbsp; &nbsp; Subject: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;xx.xx.xx.231 | sales | sales<br />
&nbsp; &nbsp; &nbsp; Sent: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4/6/2009 4:07 AM<br />
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The following recipient(s) cannot be reached:<br />
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&nbsp; &nbsp; &nbsp; address@yahoo on 4/8/2009 4:10 AM<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; The e-mail system was unable to deliver the message, but did not report a specific reason. &nbsp;Check the address and try again. &nbsp;If it still fails, contact your system administrator.<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;servername.com #4.0.0 smtp;450 &lt;address removed&gt;: Sender address rejected: Domain not found&gt;<br />

<pre><code id="code-299729">IP address obfuscated by modus_operandi, EE Moderator
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All exchange server alerts are sent to my blackberry.  I need a way to find out which computer keeps sending this  e-mail that's undeliverable.  I looked into the logs on my exchange server 2003 but was unable to find the ip of the computer that initially sent the e-mail.  Does anyone know how I can find out which computer on my network is sending this e-mail?

message did not reach some or all of the intended recipients.

      Subject:	xx.xx.xx.231 | sales | sales
      Sent:	4/6/2009 4:07 AM

The following recipient(s) cannot be reached:

      address@yahoo on 4/8/2009 4:10 AM
            The e-mail system was unable to deliver the message, but did not report a specific reason.  Check the address and try again.  If it still fails, contact your system administrator.
            <servername.com #4.0.0 smtp;450 <address removed>: Sender address rejected: Domain not found>

How can I find who's sending this e-mail?

Anti-virus software was originally developed to detect and remove computer viruses. However, with the proliferation of other kinds of malware, antivirus software started to provide protection from other computer threats. In particular, modern antivirus software can protect from malicious browser helper objects (BHOs), browser hijackers, ransomware, keyloggers, backdoors, rootkits, trojan horses, worms, malicious layered service providers (LSPs), dialers, fraud tools, adware and spyware. Some products also include protection from other computer threats, such as infected and malicious URLs, spam, scam and phishing attacks, online identity theft (privacy), online banking attacks, social engineering techniques, Advanced Persistent Threat (APT), botnets and DDoS attacks.

Anti-Virus Apps

Microsoft server applications are those applications developed specifically, but not necessarily exclusively, on the Windows Server platform. In addition to well-known products like SQL Server, Exchange, Internet Information Services (IIS), Microsoft Dynamics, Forefront, Lync and Sharepoint, they include applications like Skype, BizTalk, Hyper-V, Groove and Commerce Server. Server applications are managed with the Microsoft System Center.

Microsoft Server Apps

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.