我的MD邮件地址簿突然自动增加了很多未知的电子邮件地址？收到很多退件信息！

s4877

如题，某个帐号的地址簿里莫名其妙地增加了很多出邮件地址，例如32325255@qq.com,数字是随机的，大约有几百个，还是自动转发邮件。

我的帐号收到很多退件信息如下：

The attached message had PERMANENT fatal delivery errors!
After one or more unsuccessful delivery attempts the attached message has
been removed from the mail queue on this server.  The number and frequency
of delivery attempts are determined by local configuration parameters.

YOUR MESSAGE WAS NOT DELIVERED TO ONE OR MORE RECIPIENTS!
The following addresses did NOT receive a copy of your message:

> 1440501800@qq.com
> 741275285@qq.com

--- Session Transcript ---
Fri 2011-05-06 19:30:13: Parsing Message <xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx\pd90000000452.msg>
Fri 2011-05-06 19:30:13: From:xx@xx.com.cn
Fri 2011-05-06 19:30:13: To: 1440501800@qq.com
Fri 2011-05-06 19:30:13: Subject: =?utf-8?B?fue7k+adn+WNlei6q37nlJ/mtLvjgJAg5aWzfn7jgJE=?=
Fri 2011-05-06 19:30:13: Message-ID: <31a142a88602413e9a9e7f0290552133@9e5fe0a3562348e38bac15d15dd4d07e>
Fri 2011-05-06 19:30:13: Route slip host: qq.com
Fri 2011-05-06 19:30:13: Route slip port: 25
Fri 2011-05-06 19:30:13: MX-record resolution of [qq.com] in progress (DNS Server: 61.177.7.1)...
Fri 2011-05-06 19:30:13: *  P=030 D=qq.com TTL=(3) MX=[mx1.qq.com]
Fri 2011-05-06 19:30:13: *  P=020 D=qq.com TTL=(3) MX=[mx2.qq.com] {183.62.104.155}
Fri 2011-05-06 19:30:13: *  P=010 D=qq.com TTL=(3) MX=[mx3.qq.com]
Fri 2011-05-06 19:30:13: Attempting MX: P=010 D=qq.com TTL=(3) MX=[mx3.qq.com]
Fri 2011-05-06 19:30:13: Attempting SMTP connection to [mx3.qq.com : 25]
Fri 2011-05-06 19:30:13: A-record resolution of [mx3.qq.com] in progress (DNS Server: 61.177.7.1)...
Fri 2011-05-06 19:30:13: D=mx3.qq.com TTL=(2) A=[113.108.76.219]
Fri 2011-05-06 19:30:13: Attempting SMTP connection to [113.108.76.219 : 25]
Fri 2011-05-06 19:30:13: Waiting for socket connection...
Fri 2011-05-06 19:30:13: Socket connection established (127.0.0.1 : 4563 -> 113.108.76.219 : 25)
Fri 2011-05-06 19:30:13: Waiting for protocol initiation...
Fri 2011-05-06 19:30:13: <-- 220 newmx75.qq.com MX QQ Mail Server
Fri 2011-05-06 19:30:13: --> EHLO xx.com.cn
Fri 2011-05-06 19:30:13: <-- 250-newmx75.qq.com
Fri 2011-05-06 19:30:13: <-- 250-SIZE 73400320
Fri 2011-05-06 19:30:13: <-- 250 OK
Fri 2011-05-06 19:30:13: --> MAIL From:<xx@xx.com.cn> SIZE=2390
Fri 2011-05-06 19:30:13: <-- 250 Ok
Fri 2011-05-06 19:30:13: --> RCPT To:<1334697189@qq.com>
Fri 2011-05-06 19:30:13: <-- 250 Ok
Fri 2011-05-06 19:30:13: --> RCPT To:<1440501800@qq.com>
Fri 2011-05-06 19:30:13: <-- 550 Mailbox not found.http://service.mail.qq.com/cgi-bin/help?id=29
Fri 2011-05-06 19:30:13: --> RCPT To:<402960979@qq.com>
Fri 2011-05-06 19:30:13: <-- 250 Ok
Fri 2011-05-06 19:30:13: --> RCPT To:<724717696@qq.com>
Fri 2011-05-06 19:30:13: <-- 250 Ok
Fri 2011-05-06 19:30:13: --> RCPT To:<741275285@qq.com>
Fri 2011-05-06 19:30:13: <-- 550 Mailbox not found.http://service.mail.qq.com/cgi-bin/help?id=29
Fri 2011-05-06 19:30:13: --> DATA
Fri 2011-05-06 19:30:13: <-- 354 Send from Rising mail proxy
Fri 2011-05-06 19:30:13: Sending <xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx\pd90000000452.msg> to [113.108.76.219]
Fri 2011-05-06 19:30:13: Transfer Complete.
Fri 2011-05-06 19:30:13: <-- 250
--- End Transcript ---
: Message contains [1] file attachments

请求高手分解是何原因！

neil.fu

账户被利用了，加强弱密码管理

Libsh

账号被利用来发垃圾邮件了，建议赶紧禁掉这个账号，删除垃圾邮件，被修改该用户密码。密码设置的太简单，很容易被破解的