发向这个地址总是被退信，请教怎么解决
> The attached message had PERMANENT fatal delivery errors!>
> After one or more unsuccessful delivery attempts the attached message has
> been removed from the mail queue on this server.The number and frequency
> of delivery attempts are determined by local configuration parameters.
>
> YOUR MESSAGE WAS NOT DELIVERED TO ONE OR MORE RECIPIENTS!
>
> Failed address: abc@linpoe.net.hk
>
> --- Session Transcript ---
> Wed 2007-03-07 15:31:14: Parsing Message
> <xxxxxxxxxxxxxxxxxxxxxx\pd35000002546.msg>
> Wed 2007-03-07 15:31:14: From: cde@hs.com.cn> Wed 2007-03-07 15:31:14: To: abc@linpoe.net.hk
> Wed 2007-03-07 15:31:14: Subject: Re: opqrst
> Wed 2007-03-07 15:31:14: Message-ID:
> <016001c7608a$b4db4210$2a01a8c0@abc>
> Wed 2007-03-07 15:31:14: MX-record resolution of in
> progress (DNS Server: 202.96.134.133)...
> Wed 2007-03-07 15:31:14: *P=010 D=linpoe.net.hk TTL=(60)
> MX= {61.238.246.241}
> Wed 2007-03-07 15:31:14: Attempting MX: P=010 D=linpoe.net.hk TTL=(60)
> MX= {61.238.246.241}
> Wed 2007-03-07 15:31:14: Attempting SMTP connection to [61.238.246.241 :
> 25]
> Wed 2007-03-07 15:31:14: Waiting for socket connection...
> Wed 2007-03-07 15:31:15: Socket connection established (192.168.1.11 :
> 3936 -> 61.238.246.241 : 25)
> Wed 2007-03-07 15:31:15: Waiting for protocol initiation...
> Wed 2007-03-07 15:31:20: <-- 220 mail.linpoe.com.hk ESMTP Sendmail
> 8.12.8/8.12.8; Wed, 7 Mar 2007 15:32:14 +0800
> Wed 2007-03-07 15:31:20: --> EHLO hs.com.cn
> Wed 2007-03-07 15:31:20: <-- 250-mail.linpoe.com.hk Hello
> , pleased to meet you
> Wed 2007-03-07 15:31:20: <-- 250 ENHANCEDSTATUSCODES
> Wed 2007-03-07 15:31:20: --> MAIL From:<cde@hs.com.cn>
> Wed 2007-03-07 15:31:20: <-- 550 5.7.1 Access denied
> Wed 2007-03-07 15:31:21: --> QUIT
> Wed 2007-03-07 15:31:21: Attempting to send message to gateway.
> Wed 2007-03-07 15:31:21: Attempting SMTP connection to [202.105.113.145 :
> 25]
> Wed 2007-03-07 15:31:21: Waiting for socket connection...
> Wed 2007-03-07 15:31:21: Socket connection established (192.168.1.11 :
> 3937 -> 202.105.113.145 : 25)
> Wed 2007-03-07 15:31:21: Waiting for protocol initiation...
> Wed 2007-03-07 15:31:25: <-- 220 ESMTP Mail Ready
> Wed 2007-03-07 15:31:25: --> EHLO hs.com.cn
> Wed 2007-03-07 15:31:27: <-- 250-comingchina.com Hello hs.com.cn,
> pleased to meet you
> Wed 2007-03-07 15:31:28: <-- 250-ETRN
> Wed 2007-03-07 15:31:28: <-- 250-AUTH=LOGIN
> Wed 2007-03-07 15:31:28: <-- 250-AUTH LOGIN
> Wed 2007-03-07 15:31:28: <-- 250-8BITMIME
> Wed 2007-03-07 15:31:28: <-- 250-STARTTLS
> Wed 2007-03-07 15:31:28: <-- 250 SIZE 30720000
> Wed 2007-03-07 15:31:28: --> MAIL From:<cde@hs.com.cn> SIZE=5868
> Wed 2007-03-07 15:31:30: <-- 250 <cde@hs.com.cn>, Sender ok
> Wed 2007-03-07 15:31:30: --> RCPT To:<abc@linpoe.net.hk>
> Wed 2007-03-07 15:31:31: <-- 550 <abc@linpoe.net.hk>, Recipient
> unknown
> --- End Transcript ---
> : Message contains file attachments
>
网络环境：
深圳电信 ADSL 固定 IP －－接入 CISCO 1841路由器 （NAT 静态映射）－－硬件防火墙－－－交换机－－服务器（邮件服务器，内网固定IP）
运行时间已经超过半年
近几天发往abc@linpoe.net.hk的邮件均被退信，以上就是退信的信息，请帮忙分析一下。谢谢！ ping这个地址的结果是这样的：
Pinging 61.238.246.214 with 32 bytes of data:
Reply from 59.148.240.150: TTL expired in transit.
Reply from 59.148.240.150: TTL expired in transit.
Reply from 59.148.240.150: TTL expired in transit.
Reply from 59.148.240.150: TTL expired in transit. 最近两周内没有动过服务器以及网线，只察看过温度。如果从字面上的提示来看说是网络存在环路，应该不可能啊！ tracert 的结果
Tracing route to 061238246214.ctinets.com
over a maximum of 30 hops:
1 1 ms <1 ms <1 ms192.168.1.254
2 * * * Request timed out.
3 16 ms 16 ms 16 ms121.35.15.33
4 18 ms 18 ms 17 ms59.40.49.98
5 26 ms 17 ms 17 ms58.60.24.30
6 20 ms 19 ms 24 ms202.97.43.197
7 19 ms 20 ms 19 ms202.97.33.202
8 28 ms 20 ms 19 ms202.97.60.146
9 128 ms 85 ms 31 ms202.97.61.34
10 24 ms 23 ms 23 ms202.97.62.37
11 24 ms 42 ms 23 ms61.244.232.109
12 23 ms 23 ms 24 ms61.244.232.241
13 23 ms 23 ms 23 ms061238168253.ctinets.com
14 25 ms 24 ms 26 ms061238168026.ctinets.com
15 25 ms 25 ms 28 ms061093150090.ctinets.com
16 25 ms 25 ms 25 ms059148240150.ctinets.com
17 26 ms 25 ms 24 ms059148240146.ctinets.com
18 25 ms 25 ms 25 ms059148240150.ctinets.com
19 32 ms 75 ms 26 ms059148240146.ctinets.com
20 25 ms 26 ms 27 ms059148240150.ctinets.com
21 38 ms 25 ms 27 ms059148240146.ctinets.com
22 25 ms 26 ms 26 ms059148240150.ctinets.com
23 27 ms 27 ms 27 ms059148240146.ctinets.com
24 27 ms 27 ms 26 ms059148240150.ctinets.com
25 27 ms 27 ms 26 ms059148240146.ctinets.com
26 27 ms 28 ms 28 ms059148240150.ctinets.com
27 28 ms 27 ms 26 ms059148240146.ctinets.com
28 26 ms 29 ms 28 ms059148240150.ctinets.com
29 37 ms 46 ms 50 ms059148240146.ctinets.com
30 28 ms 32 ms 27 ms059148240150.ctinets.com 在59.148.240.146和59.148.240.150两个IP之间TTL被耗尽。我是否可以理解为对方出现问题呢？谢谢 看来comingchina.com也不是完全球收发保证呀． 钉子管理员，能帮忙分析一下吗？需要如何解决？谢谢了 > Wed 2007-03-07 15:31:25: --> EHLO hs.com.cn
hs.com.cn 域名好像不存在
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