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tjvetterFlag for United States of America

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Malware Issue; email message is being sent to multiple recipients from my email account, probably to China.

What is going on here?  I have inserted a portion of a returned email message sent from my email account:

___________________________________________________________________________

This message was created automatically by mail delivery software.

A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:

  13106081@163.com
    SMTP error from remote mail server after RCPT TO:<13106081@163.com>:
    host 163mx01.mxmail.netease.com [220.181.14.139]:
    550 User not found: 13106081@163.com

------ This is a copy of the message, including all the headers. ------
------ The body of the message is 118455 characters long; only the first
------ 106496 or so are included here.

Return-path: <tjvetter@pipeline.com>
Received: from [182.108.150.194] (helo=ynxy.net)
      by elasmtp-junco.atl.sa.earthlink.net with esmtpa (Exim 4.67)
      (envelope-from <tjvetter@pipeline.com>)
      id 1bHvwl-0006ri-7g; Tue, 28 Jun 2016 12:33:15 -0400
Message-ID:<2016062900324880533362@pipeline.com>
From:"" <tjvetter@pipeline.com>
To:""<13106044444@163.com>,
      <13106081@163.com>,
      <13106789696@163.com>,
      <13107004151@163.com>,
      <13107162430@163.com>,
      <13107433452@163.com>,
      <1310743703g@163.com>,
      <13107579464@163.com>,
      <13108280081@163.com>,
      <13108502340@163.com>,
      <13108578368@163.com>,
      <13108893247@163.com>,
      <13109038741@163.com>,
      <13109049729@163.com>,
      <13109230210@163.com>
Subject: 黎昕似乎看注意,查看护士护师改分包过
Date:Wed, 29 Jun 2016 00:32:48 +0800
Mime-Version: 1.0
Content-Type: multipart/alternative;
      boundary="=7da54d1cac5519ff2cd1aba4bc_="

This is a multi-part message in MIME format.

--=7da54d1cac5519ff2cd1aba4bc_=
Content-Type: text/html;
      charset="utf-8"
Content-Transfer-Encoding: base64

PFA+c1llUXdNaFhjQmJVZE1kQWZXeEtvVm1PazwvUD4NCjxQPmNvaW4gZ3JpbmQgaG90LCBiZWcg
Zm9ydGggZXhjZXB0aW9uIGhhbmcuPC9QPg0KPFA+Jm5ic3A7PC9QPg0KPERJViBzdHlsZT0iQk9S
REVSLVJJR0hUOiAjYjlkM2VlIDFweCBzb2xpZDsgQk9SREVSLVRPUDogI2I5ZDNlZSAxcHggc29s
aWQ7IE1BUkdJTi1UT1A6IDE1cHg7IERJU1BMQVk6IGJsb2NrOyBGT05ULVNJWkU6IDE3cHg7IEJB
Q0tHUk9VTkQ6IHVybChkYXRhOmltYWdlL2pwZztiYXNlNjQsLzlqLzRBQVFTa1pKUmdBQkFRRUFl
QUI0QUFELzRRQVdSWGhwWmdBQVRVMEFLZ0FBQUFnQUFBQUFBQUQvN0FBUlJIVmphM2tBQVFBRUFB
_________________________________________________________________________________________________________

I did not sent this and the MIME code looks like it is thousands of lines long (this is only the beginning few lines).  I run Malwarebytes every night automatically.  And I have McAffee anti-virus.
SOLUTION
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Wayne Herbert
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The email came from here:   Message-ID:<2016062900324880533362@pipeline.com>
SOLUTION
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ASKER

Thank you all.  This allegedly outgoing mail did not appear in my Sent Items folder (Outlook).  So, I don't think I can find anything else in the alleged headers.

Does John's comment mean that the email did not originate from my email server?
If your machine originated the email, it was spoofed. When I go after Spam with email vendors, I always hand them the message ID
SOLUTION
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Here is another one, it is on my Outlook at my regular computer (the other copy was from the online site for my email).  This one has a bunch of hyperlinks that do not show here:

This message was created automatically by mail delivery software.

A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:

  13106081@163.com
    SMTP error from remote mail server after RCPT TO:<13106081@163.com>:
    host 163mx01.mxmail.netease.com [220.181.14.139]:
    550 User not found: 13106081@163.com

------ This is a copy of the message, including all the headers. ------
------ The body of the message is 118455 characters long; only the first
------ 106496 or so are included here.

Return-path: <tjvetter@pipeline.com>
Received: from [182.108.150.194] (helo=ynxy.net)
      by elasmtp-junco.atl.sa.earthlink.net with esmtpa (Exim 4.67)
      (envelope-from <tjvetter@pipeline.com>)
      id 1bHvwl-0006ri-7g; Tue, 28 Jun 2016 12:33:15 -0400
Message-ID:<2016062900324880533362@pipeline.com>
From:"" <tjvetter@pipeline.com>
To:""<13106044444@163.com>,
      <13106081@163.com>,
      <13106789696@163.com>,
      <13107004151@163.com>,
      <13107162430@163.com>,
      <13107433452@163.com>,
      <1310743703g@163.com>,
      <13107579464@163.com>,
      <13108280081@163.com>,
      <13108502340@163.com>,
      <13108578368@163.com>,
      <13108893247@163.com>,
      <13109038741@163.com>,
      <13109049729@163.com>,
      <13109230210@163.com>
Subject: =?utf-8?B?6buO5piV5Ly85LmO55yL5rOo5oSP77yM5p+l55yL5oqk5aOr5oqk5biI5pS55YiG5YyF6L+H?=
Date:Wed, 29 Jun 2016 00:32:48 +0800
Mime-Version: 1.0
Content-Type: multipart/alternative;
      boundary="=7da54d1cac5519ff2cd1aba4bc_="

This is a multi-part message in MIME format.

--=7da54d1cac5519ff2cd1aba4bc_=
Content-Type: text/html;
      charset="utf-8"
Content-Transfer-Encoding: base64

PFA+c1llUXdNaFhjQmJVZE1kQWZXeEtvVm1PazwvUD4NCjxQPmNvaW4gZ3JpbmQgaG90LCBiZWcg
Zm9ydGggZXhjZXB0aW9uIGhhbmcuPC9QPg0KPFA+Jm5ic3A7PC9QPg0KPERJViBzdHlsZT0iQk9S
REVSLVJJR0hUOiAjYjlkM2VlIDFweCBzb2xpZDsgQk9SREVSLVRPUDogI2I5ZDNlZSAxcHggc29s
aWQ7IE1BUkdJTi1UT1A6IDE1cHg7IERJU1BMQVk6IGJsb2NrOyBGT05ULVNJWkU6IDE3cHg7IEJB
Q0tHUk9VTkQ6IHVybChkYXRhOmltYWdlL2pwZztiYXNlNjQsLzlqLzRBQVFTa1pKUmdBQkFRRUFl
QUI0QUFELzRRQVdSWGhwWmdBQVRVMEFLZ0FBQUFnQUFBQUFBQUQvN0FBUlJIVmphM2tBQVFBRUFB
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SOLUTION
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Thanks!