已经显示发送成功，但接着又显示错误

飞雪天

以下是log
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Wed 2007-12-26 17:11:14: ----------
Wed 2007-12-26 17:11:14: Session 4896; child 3
Wed 2007-12-26 17:10:40: Parsing Message <c:\mdaemon\queues\remote\pd35000080426.msg>
Wed 2007-12-26 17:10:40: From:
Wed 2007-12-26 17:10:40: To:
Wed 2007-12-26 17:10:40: Subject: IS ONLY TEST MAIL.
Wed 2007-12-26 17:10:40: Message-ID: <200712261628468509375@>
Wed 2007-12-26 17:10:40: 正在进行[]的 MX-记录解析（DNS 服务器：）...
Wed 2007-12-26 17:10:40: * P=021 S=000 D=TTL=(144) MX=[] {72.18.132.204}
Wed 2007-12-26 17:10:40: Attempting MX: P=021 S=000 D= TTL=(144) MX=[] {72.18.132.204}
Wed 2007-12-26 17:10:40: 试图 SMTP 连接到 [72.18.132.204 : 25]
Wed 2007-12-26 17:10:40: 等候连接...
Wed 2007-12-26 17:10:40: 已建立连接 (192.168.1.251 : 3707 -> 72.18.132.204 : 25)
Wed 2007-12-26 17:10:40: 等待协议初始化...
Wed 2007-12-26 17:10:40: <-- 220 SPIRIT.secure-xp.net
Wed 2007-12-26 17:10:40: --> EHLO XXXXwan.com.cn
Wed 2007-12-26 17:10:40: <-- 250-SPIRIT.secure-xp.net Hello [222.44.42.232]
Wed 2007-12-26 17:10:40: <-- 250-SIZE 20971520
Wed 2007-12-26 17:10:40: <-- 250-AUTH LOGIN CRAM-MD5
Wed 2007-12-26 17:10:40: <-- 250 OK
Wed 2007-12-26 17:10:40: --> MAIL From:<> SIZE=1722
Wed 2007-12-26 17:10:41: <-- 250 OK <> Sender ok
Wed 2007-12-26 17:10:41: --> RCPT To:<>
Wed 2007-12-26 17:10:41: <-- 250 OK <> Recipient ok
Wed 2007-12-26 17:10:41: --> DATA
Wed 2007-12-26 17:10:41: <-- 354 Start mail input; end with <CRLF>.<CRLF>
Wed 2007-12-26 17:10:41: 正在发送 <c:\mdaemon\queues\remote\pd35000080426.msg> 到 [72.18.132.204]
Wed 2007-12-26 17:10:41: 发送完成。
Wed 2007-12-26 17:11:14: Winsock Error 10054 连接被另一端重置！
Wed 2007-12-26 17:11:14: 读取套接字错误
Wed 2007-12-26 17:11:14: 此邮件已经过了 42 分；在这个队列还剩 18 分
Wed 2007-12-26 17:11:14: SMTP 会话终止（in/out 字节： 260/1831）

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造成这种现象的原因是什么？
期待指导!

lwz_08

Wed 2007-12-26 17:11:14: Winsock Error 10054 连接被另一端重置！
Wed 2007-12-26 17:11:14: 读取套接字错误
Wed 2007-12-26 17:11:14: 此邮件已经过了 42 分；在这个队列还剩 18 分
Wed 2007-12-26 17:11:14: SMTP 会话终止（in/out 字节： 260/1831）

检查防火墙!!!