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unauthorized email being sent from my account?

by mkaresh / January 26, 2007 4:28 AM PST

I received this email in my yahoo account (from "Mail Delivery System").

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)

(generated from extravagantlydefaulted@accaglobal.ru)
SMTP error from remote mail server after RCPT
host mx1.yandex.ru []: 550 5.1.1
<bookkeeping@yandex.ru> user unknown

------ This is a copy of the message's headers. ------

Return-path: <myemailaddy@yahoo.com>
Received: from [] (helo=accaglobal.ru)
by m1.dnsix.com with esmtp (Exim 4.63)
(envelope-from <myemailaddy@yahoo.com>)
id 1HAPqw-000461-1z
for extravagantlydefaulted@accaglobal.ru; Fri, 26 Jan 2007 04:06:50
From: myemailaddy@yahoo.com
To: extravagantlydefaulted@accaglobal.ru
Subject: Re: File
Date: Fri, 26 Jan 2007 17:36:45 +0530
MIME-Version: 1.0
Content-Type: multipart/mixed;
X-Priority: 3
X-MSMail-Priority: Normal

I never created an email like this. What does this mean? How or why would email be generated from my yahoo account & going to some other country? (that's not my actual addy above- I overtyped, btw) This is the second notice like this that I have received this week.

If I should look somewhere else for help on this, please let me know.

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It is a scam, Just delete things like that
by roddy32 / January 26, 2007 7:04 AM PST

without opening them.

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Unauthorized e-mail being sent from my account
by kwpackers / November 19, 2009 2:41 PM PST

I keep getting messages:

Read MAILER-DAEMON@n19.bullet.mail.mud.yahoo.com failure notice 3:42 PM 5KB
Read MAILER-DAEMON@n17.bullet.mail.mud.yahoo.com failure notice 3:42 PM 5KB

Example of content:

Previous message | Go to Next message | Back to MessagesMark as Unread | Print ReplyReply AllMove...InboxAdvanceAmeriCreditAmFamBankBrianCapitalOneCarInsuranceCingularCoxCredit OneHoldHome SearchI-PassInsuranceInveissJob SearchMortgageOPPDPaymentsSallieMaeunemploymentVonage
Flag this messagefailure noticeThursday, November 19, 2009 3:42 PM
From: "MAILER-DAEMON@n19.bullet.mail.mud.yahoo.com" <MAILER-DAEMON@n19.bullet.mail.mud.yahoo.com>Add sender to ContactsTo: kennethmarcuswilliams@yahoo.comSorry, we were unable to deliver your message to the following address.

Mail server for "yhaoo.cn" unreachable for too long

--- Below this line is a copy of the message.

Received: from [] by n19.bullet.mail.mud.yahoo.com with NNFMP; 17 Nov 2009 21:41:17 -0000
Received: from [] by t2.bullet.mud.yahoo.com with NNFMP; 17 Nov 2009 21:41:17 -0000
Received: from [] by omp414.mail.mud.yahoo.com with NNFMP; 17 Nov 2009 21:41:17 -0000
X-Yahoo-Newman-Id: 348471.53687.bm@omp414.mail.mud.yahoo.com
Received: (qmail 43888 invoked from network); 17 Nov 2009 21:41:16 -0000
DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws;
s=s1024; d=yahoo.com;
b=dmVxWWjnrJb7Y+wMp2a6BrEzdMMp47JROnturqu4zu3ITqPxTRPs5PflNe9zJtYS6vIMLlTlsxoVlhj8cQOu85pWc+/KQtI5Hr7U/GlLH/Dl+D9jBlNoRoH7cdBofkUZr7VNQ1joxJfwI5dXlyPPMWO/r+qO8H0Oxdirqmo8m+g= ;
Message-ID: <840323.43087.qm@smtp116.plus.mail.sp1.yahoo.com>
Received: from (KennethMarcusWilliams@ with login)
by smtp116.plus.mail.sp1.yahoo.com with SMTP; 17 Nov 2009 13:41:15 -0800 PST
X-Yahoo-SMTP: EFTmIbmswBDaZEmxp3uen6uy74.yoKuzT.g0IlSHXA.xMw--
X-YMail-OSG: TJeVW5IVM1k_1WRE.8kgi1Vn0fAltc4qDj3hS_dfARQsEhMdvveDcaZyM6xhrRIGFJSsOxF._x2VjwJTyrgeiGq7pJAs.9qAfCnQ9oNKPfKduIfLwlVpQAm10jCWKLv.rR6qzaSPfOnEO5ugHyXo99pJWdg6tOwfQnMY3Ct4MoxaDb._u9azv.s47Y6EUAQ9EtOU0cAXdID613g1XLsVfnw.c8sQiXkMQqDZ6z8HAZfHOl2Ho7dwvraHOpBHNqBk6PegpcsMabJ4jho5m9nm.qJpyRQFnwYtiLu9PGnzc8NdFKKR70rZZjOGhZQCXmpXkM6JkZQr
X-Yahoo-Newman-Property: ymail-3
From: "KennethMarcusWilliams" <KennethMarcusWilliams@yahoo.com>
Subject: =?GB2312?B?Li4utPrA7brP1/chLi4u?=
To: sz2010sz@163.com, love365today@tom.com, love366days@126.com,
love369@163.com, love3girl@163.com, love40461263@126.com,
love452001826@yhaoo.cn, love4freedom2003@yahoo.com
Content-Type: text/html
Date: Wed, 18 Nov 2009 05:41:19 +0800

<SMALL style="DISPLAY: none">译</SMALL><FONT color=#000000 size="1">合作代理!</FONT><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<META content="text/html; charset=gb2312" http-equiv=Content-Type>
<META name=GENERATOR content="MSHTML 8.00.6001.18812"></HEAD>
<P> </P>
<P> 郑重承诺:所有票据可以上网查询或到税务局验证!鉴定真假后付款。</P>
<P> </P>
<P>若您有这方面业务合作 咨询电话:135--3069--5122 张小姐! 谢谢!如扰海函</P>

Usually there are several in a cluster. I do not send anything like this and it does not appear in my Sent folder.

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by Jiri_AVG AVG Staff / November 19, 2009 6:22 PM PST

a little bit of a technical explanation:

If this has not been sent from your account (just to be sure, you can change your Yahoo mail password), this might be caused by some spammer, who knows your e-mail address and puts it in the "Reply-To" field of the e-mail header. Then, tries to send to various addresses using bots and rogue/flawed SMTP servers and if those SMTP servers don't know the address, they simply get the response "we don't know this address" back to your e-mail account.

Not much to do to avoid this, but removing such messages if you haven't send them.

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I have the same thing going on, help!
by NatureManMatt / January 4, 2013 4:59 AM PST
In reply to: spam

I am assuming they got my email from Craigslist because in the mass emails it has Craigslist somewhere in the subject or writing. I see that they are trying to send things to my contacts. Are my contacts getting any emails? And what would they be if they are?

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