Mystery outgoing messages.

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Outlook version
Outlook 2010 32 bit
Email Account
Just this morning I began receiving multiple "Mail Delivery failure" messages in my inbox.

They all notify of messages that failed to deliver because of Error 554, "This user doesn't have a account"

Each copy of this notice indicates a slightly different user name with this account.

None of these sent messages were originated by me (knowingly)

I am includng the text notice of the return along with the text of the supposed message which was sent.

Anybody have any idea what is going on here?

Thanks for any info or assistance.


" Reporting-MTA: dns;

Arrival-Date: Thu, 31 Oct 2013 12:09:46 +0000

Status: 5.0.0

Last-Attempt-Date: Thu, 31 Oct 2013 12:09:46 +0000

Remote-MTA: dns;

Diagnostic-Code: smtp; 554 delivery error: dd This user doesn't have a account ( [-5] -

Action: failed

Final-Recipient: rfc822;"


------ This is a copy of the original message, including all headers. ------

Return-Path: <>

Authentication-Results:; auth=pass (LOGIN)

X-Authority-Analysis: v=2.0 cv=FKiZNpUs c=1 sm=0 a=qnT5KsEfxKKwKFnRApM6gg==:17 a=QTUBjlOwOtUA:10 a=XqySer0LBMMA:10 a=05ChyHeVI94A:10 a=jPJDawAOAc8A:10 a=IkcTkHD0fZMA:10 a=ayC55rCoAAAA:8 a=KGjhK52YXX0A:10 a=PeGqh9VPvVwA:10 a=DxIkAq4tAAAA:8 a=5G4ZcoZEAAAA:8 a=WZ1PVEuxAAAA:8 a=MfmKMS49Gsp52ieOvqgA:9 a=QEXdDO2ut3YA:10 a=_W_S_7VecoQA:10 a=tXsnliwV7b4A:10 a=9zGjFV1fQ1oA:10 a=fE4tRdMKSqDn-1qk:21 a=qnT5KsEfxKKwKFnRApM6gg==:117

X-Cloudmark-Score: 0



Received: from [] ([] helo=psl)

by (envelope-from <>)

(ecelerity r()) with ESMTPA

id 48/90-01931-38842725; Thu, 31 Oct 2013 12:09:44 +0000

Message-ID: <74958C9D8CB27D60FEA901E158F05366@psl>

From: "DQ10" <>

To: <>

Subject: =?utf-8?B?44K544Kv44Km44Kn44Kiwrfjgqjjg4vjg4Pjgq/jgrnjgqLjgqvjgqbjg7Pjg4jjg7zjg7zlronlhag=?=


Date: Thu, 31 Oct 2013 20:32:19 +0800

MIME-Version: 1.0

Content-Type: text/html;


Content-Transfer-Encoding: base64

X-Priority: 3

X-MSMail-Priority: Normal

X-Mailer: Microsoft Outlook Express 6.00.2900.5512

X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5512





I had to remove the remainder of the bulk of the text in the original message to meet posting limits.


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