有个老外发来的邮件老是退信，其他的都正常，我发给他也正常。

madkid

我发表的帖子在这里，请大家帮忙

http://www.5dmail.net/bbs/viewthread.php?tid=189456&pid=305442&page=1&extra=page%3D1

退信报告如下：
Delivery Failure Report
Your message: Meeting in Shanghai? Steve is planning a trip to China was not delivered to: anne@kehongtextile.com because: Router: Failed to connect to SMTP host KEHONGTEXTILE.COM because Connection to remote SMTP server timed out:


What should you do?

• You can resend the undeliverable document to the recipients listed above by choosing the Resend button or the Resend command on the Actions menu.
• Once you have resent the document you may delete this Delivery Failure Report.
• If resending the document is not successful you will receive a new failure report.
• Unless you receive other Delivery Failure Reports, the document was successfully delivered to all other recipients.
  

我让对方telnet mx.xinnetdns.com 25 后的结果如下：
220 globalmailgateway2.xinnet.com ESMTP
421 Exceeded allowable connection time, disconnecting.

Connection to host lost.

从退信等报告看可能是对方邮件服务器的解析不对，请求对方检查被拒绝。我从其他的测试结果看，没有找到问题结症。请大家一起帮帮忙。其他的测试结果点上面的连接可以看到。

[ 本帖最后由 madkid 于 2010-5-28 08:29 编辑 ]

tdk

怀疑网络连通性 问题