不能发到vip.163.com和sina.com.cn邮箱的问题

pageguest

我系统保证没问题，装的foxmail 1.1 的邮件服务器，以前一直好的最近3个月vip.163.com和sina.com.cn邮箱都发不进去，其他的邮箱都可以发(包括163.com)，以下是退信的内容请帮忙看看：

vip.163.com的错误
----- Original Message -----
From: "Mail Delivery Service" <MAILER-SERVICE>
To: <cz-gm.com@cz-gm.com>
Sent: Wednesday, August 02, 2006 5:38 PM
Subject: Returned message: send failed


> The original message was Received: from 3c32f789ac304a9([218.93.121.149])
>   by czgm-abf98887d3[218.93.121.146](Aerofox Mail Server 1.1.0.1) with SMTP; Wed, 2 Aug 2006 17:38:20 +0800
>
>   ----- The following addresses had permanent errors -----
>   <lingxiaojun@vip.163.com>
>
>   ----- Transcript of session follows -----
>   >> DATA
>   << 550 Requested action not taken: wKgIbx5A+Vvdc9BE+q45CQ==.29650S2, please try again vas1
>
>

sina .com的退信
----- Original Message -----
From: "Mail Delivery Service" <MAILER-SERVICE>
To: <cz-gm.com@cz-gm.com>
Sent: Tuesday, August 22, 2006 5:36 PM
Subject: Warning: could not send message for past 4 hours


>     **********************************************
>     *       THIS IS A WARNING MESSAGE ONLY       *
>     *   YOU DO NOT NEED TO RESEND YOUR MESSAGE   *
>     **********************************************
>
> The original message was Received: from 3c32f789ac304a9([218.93.121.149])
>   by czgm-abf98887d3[218.93.121.146](Aerofox Mail Server 1.1.0.1) with SMTP; Tue, 22 Aug 2006 13:20:16 +0800
>
>   ----- The following addresses had non-fatal errors -----
>   <yunfeng4204@sina.com>
>
>   ----- Transcript of session follows -----
>
> Warning: message still undelivered after 4 hours
> Will keep trying until message is 4 days old