求助：邮件服务器无法发送邮件，求高人指点
日志如下：

Attempting SMTP connection to [*******.co.jp]
Mon 2008-05-26 13:21:49: Resolving MX records for [*******.co.jp] (DNS Server: 192.168.1.5)...
Mon 2008-05-26 13:21:49: *  P=010 S=002 D=******.co.jp TTL=(52) MX=[gwix01a.******.co.jp] {******31.67}
Mon 2008-05-26 13:21:49: *  P=010 S=003 D=******.co.jp TTL=(52) MX=[gwix02a.******.co.jp] {******31.68}
Mon 2008-05-26 13:21:49: *  P=100 S=000 D=******.co.jp TTL=(52) MX=[gwse01s.******.co.jp] {******.9.150}
Mon 2008-05-26 13:21:49: *  P=100 S=001 D=******.co.jp TTL=(52) MX=[gwse02s.******.co.jp] {******.9.151}
Mon 2008-05-26 13:21:49: Attempting SMTP connection to [******.31.67:25]
Mon 2008-05-26 13:21:49: Waiting for socket connection...
Mon 2008-05-26 13:21:49: *  Connection established (192.168.1.2:4100 -> ******.31.67:25)
Mon 2008-05-26 13:21:49: Waiting for protocol to start...
Mon 2008-05-26 13:21:50: <-- 220 gwix01a.******.co.jp ESMTP
Mon 2008-05-26 13:21:50: --> EHLO ******.cn
Mon 2008-05-26 13:21:50: <-- 250-gwix01a.******.co.jp
Mon 2008-05-26 13:21:50: <-- 250-8BITMIME
Mon 2008-05-26 13:21:50: <-- 250 SIZE 104857600
Mon 2008-05-26 13:21:50: --> MAIL From:<[email=prvs=1029022f22=fann@01media.cn]prvs=1029022f22=fann@******.cn[/email]> SIZE=1765089
Mon 2008-05-26 13:21:50: <-- 250 sender <[email=prvs=1029022f22=fann@01media.cn]prvs=1029022f22=fann@******.cn[/email]> ok
Mon 2008-05-26 13:21:50: --> RCPT To:<Tozaki.Toshio@******.co.jp>
Mon 2008-05-26 13:21:51: <-- 250 recipient <Tozaki.Toshio@******.co.jp> ok
Mon 2008-05-26 13:21:51: --> RCPT To:<liu.xinjian@******.co.jp>
Mon 2008-05-26 13:21:51: <-- 250 recipient <liu.xinjian@******.co.jp> ok
Mon 2008-05-26 13:21:51: --> DATA
Mon 2008-05-26 13:21:52: <-- 354 go ahead
Mon 2008-05-26 13:21:52: Sending <d:\mdaemon\queues\remote\pd50000002532.msg> to [202.250.31.67]
Mon 2008-05-26 13:22:21: *  Winsock Error 10054 Connection was reset by the other side!
Mon 2008-05-26 13:22:21: Error writing to socket
Mon 2008-05-26 13:22:21: This message is 8 minutes old; it has 112 minutes left in this queue
Mon 2008-05-26 13:22:21: SMTP session terminated (Bytes in/out: 271/483497)
Mon 2008-05-26 13:22:21: ----------

不知你们的链路到gwix01a.******.co.jp的状况如何?

可以ping通，应该链接上没问题的吧

reply时间是多少?

没有做域名反向解析吧
另外你也可以查一下你的路由,看看往该邮箱地址的通信是否正常

Pinging gwix01a.*******.co.jp [*******.31.67] with 32 bytes of data:

Reply from *******.31.67: bytes=32 time=391ms TTL=45
Reply from *******.31.67: bytes=32 time=328ms TTL=45
Reply from *******.31.67: bytes=32 time=334ms TTL=45
Reply from *******.31.67: bytes=32 time=380ms TTL=45

Ping statistics for *******.31.67:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 328ms, Maximum = 391ms, Average = 358ms

发给其他的(非******.co.jp域名)也会出现此类问题吗?

不会，发其他邮箱都没问题

Mon 2008-05-26 13:22:21: *  Winsock Error 10054 Connection was reset by the other side!

许多这类提示都比较困难，可能并不是你的MD的问题，

我猜也有可能是域名反解的问题，我让对方加我白名单试试