关于sendmail自动发信的问题，请高手进来看看。

trt2009

大家好，我的sendmail服务器好像中毒了，自动发信给xinjin.com域内的用户，下面是从日志中截取的部分内容，像j012764，010014系统中都没有这些用户，是从哪里来的呢？我不太明白，检查了第三方的Mail Relay，服务器并没有开启，这是什么原因，请高手指教。
Apr  6 20:17:32 app2 sendmail[29160]: n373HVcD029160: <j012764@xinjin.com>... User unknown
Apr  6 20:17:32 app2 sendmail[29161]: n373HVOB029161: <010014@xinjin.com>... User unknown
Apr  6 20:17:32 app2 sendmail[29160]: n373HVcD029160: lost input channel from [221.221.111.230] to MTA after rcpt
Apr  6 20:17:32 app2 sendmail[29160]: n373HVcD029160: from=<er@xytdc.com>, size=0, class=0, nrcpts=0, proto=ESMTP, daemon=MTA, relay=[221.221.111.230]
Apr  6 20:17:32 app2 sendmail[29161]: n373HVOB029161: lost input channel from [221.221.111.230] to MTA after rcpt
Apr  6 20:17:33 app2 sendmail[29164]: n373HW5t029164: <q4027295@xinjin.com>... User unknown
Apr  6 20:17:33 app2 sendmail[29164]: n373HW5t029164: lost input channel from [221.221.111.230] to MTA after rcpt
Apr  6 20:17:33 app2 sendmail[29164]: n373HW5t029164: from=<200806070239.m572a864012555@xinjin.com>, size=0, class=0, nrcpts=0, proto=ESMTP, daemon=MTA, relay=[221.221.111.230]




以下是我测试的第三方的Mail Relay的结果
Mail relay testing
Connecting to 202.106.0.50 for relay test...
<<< 220 app2.ivymax.com ESMTP Sendmail 8.13.8/8.13.8; Tue, 7 Apr 2009 22:39:55 -0700
>>> HELO antispam-ufrj.pads.ufrj.br
<<< 250 app2.ivymax.com Hello santuario.pads.ufrj.br [146.164.48.5], pleased to meet you
Relay test 1
>>> RSET
<<< 250 2.0.0 Reset state
>>> MAIL FROM: <spamtest@antispam-ufrj.pads.ufrj.br>
<<< 250 2.1.0 ... Sender ok
>>> RCPT TO: <relaytest@antispam-ufrj.pads.ufrj.br>
<<< 550 5.7.1 ... Relaying denied. Proper authentication required.




Relay test 20
>>> RSET
<<< 250 2.0.0 Reset state
>>> MAIL FROM: <spamtest@[202.106.0.50]>
<<< 250 2.1.0 ... Sender ok
>>> RCPT TO: <relaytest@antispam-ufrj.pads.ufrj.br@>
<<< 553 5.1.2 ... Invalid route address

>>> QUIT
<<< 221 2.0.0 app2.ivymax.com closing connection
Relay test result
All tests performed, no relays accepted by remote host.

WongMokin

from=<er@xytdc.com>, size=0, class=0, nrcpts=0, proto=ESMTP, daemon=MTA, relay=[221.221.111.230]

看见没, 是外面的发进来的, 人家狂发垃圾邮件来呢.