我的邮件服务器发往新浪的信给退回了，请帮忙看看原因！

czhy

我的邮件服务器发往新浪的信给退回了，请帮忙看看原因！

以下是退信的内容：

This is the Czhy program at host czhy.hntc.edu.cn.

I'm sorry to have to inform you that the message returned
below could not be delivered to one or more destinations.

For further assistance, please send mail to

If you do so, please include this problem report. You can
delete your own text from the message returned below.

The Czhy program

: connect to sinamx.sina.com.cn[202.106.182.237]: server
dropped connection without sending the initial greeting



--------------------------------------------------------------------------------

Delivery Status
Reporting-MTA: dns; czhy.hntc.edu.cn
Arrival-Date: Tue, 18 May 2004 19:03:05 +0800 (CST)

Final-Recipient: rfc822; czhyczhy@sina.com.cn
Action: failed
Status: 4.0.0
Diagnostic-Code: X-Czhy; connect to sinamx.sina.com.cn[202.106.182.237]: server
    dropped connection without sending the initial greeting

czhy

这就是错误信息！

czhy

那我该怎么解决呢？

czhy

我的每一封都给退回来！这个就退回的错误信息：
This is the Czhy program at host czhy.hntc.edu.cn.

I'm sorry to have to inform you that the message returned
below could not be delivered to one or more destinations.

For further assistance, please send mail to

If you do so, please include this problem report. You can
delete your own text from the message returned below.

The Czhy program

: connect to sinamx.sina.com.cn[202.106.182.237]: server
dropped connection without sending the initial greeting



--------------------------------------------------------------------------------

Delivery Status
Reporting-MTA: dns; czhy.hntc.edu.cn
Arrival-Date: Tue, 18 May 2004 19:03:05 +0800 (CST)

Final-Recipient: rfc822; czhyczhy@sina.com.cn
Action: failed
Status: 4.0.0
Diagnostic-Code: X-Czhy; connect to sinamx.sina.com.cn[202.106.182.237]: server
dropped connection without sending the initial greeting

czhy

关键我怎么解决呢？我怎么修改我自己的邮件服务器才可以呢？
新浪的服务器我可是改不了的