谁知道这个退信是什么问题？是不是对方SMTP没做对啊！

没有故事的人

The attached message had PERMANENT fatal delivery errors!<br>
<br>
After one or more unsuccessful delivery attempts the attached message has<br>
been removed from the mail queue on this server. The number and frequency<br>
of delivery attempts are determined by local configuration parameters.<br>
<br>
YOUR MESSAGE WAS NOT DELIVERED TO ONE OR MORE RECIPIENTS!<br>
<br>
--- Session Transcript ---<br>Fri 2004-09-17 12:16:41: Parsing Message <xxxxxxxxxxxxxxxxxx\pd50000008017.msg><br>Fri 2004-09-17 12:16:41: From: XXX@XXX.net.cn<br>Fri 2004-09-17 12:16:41: To: BBB@BBB.gov.cn<br>Fri 2004-09-17 12:16:41: Subject: MDaemon!<br>Fri 2004-09-17 12:16:41: Message-ID: <BLEFICNNHAKMNMBDDOOJAEGGCAAA.XXX@XXX.net.cn><br>Fri 2004-09-17 12:16:41: Route slip host: jxbys.gov.cn<br>Fri 2004-09-17 12:16:41: Route slip port: 25<br>Fri 2004-09-17 12:16:41: MX-record resolution of [BBB.gov.cn] in progress (DNS Server: 202.96.209.6)...<br>Fri 2004-09-17 12:16:42: P=010 D=BBB.gov.cn TTL=(60) MX=[mail.BBB.gov.cn]{192.168.0.23}<br>Fri 2004-09-17 12:16:42: Attempting MX: P=010 D=BBB.gov.cn TTL=(60) MX=[mail.BBB.gov.cn] {192.168.0.23}<br>Fri 2004-09-17 12:16:42: Attempting SMTP connection to [192.168.16.25 : 25]<br>Fri 2004-09-17 12:16:42: Waiting for socket connection...<br>Fri 2004-09-17 12:16:42: Socket connection established (192.168.0.45 : 2485 -> 192.168.16.25: 25)<br>Fri 2004-09-17 12:16:42: Waiting for protocol initiation...<br>Fri 2004-09-17 12:16:42: <-- 220 BBB.net.cn ESMTP MDaemon 6.8.4; Fri, 17 Sep 2004 12:24:21 +0800<br>Fri 2004-09-17 12:16:42: --> EHLO qast.com<br>Fri 2004-09-17 12:16:42: <-- 250-BBB.net.cn Hello TTT.com, pleased to meet you<br>Fri 2004-09-17 12:16:42: <-- 250-ETRN<br>Fri 2004-09-17 12:16:42: <-- 250-AUTH=LOGIN<br>Fri 2004-09-17 12:16:42: <-- 250-AUTH LOGIN CRAM-MD5<br>Fri 2004-09-17 12:16:42: <-- 250-8BITMIME<br>Fri 2004-09-17 12:16:42: <-- 250 SIZE 0<br>Fri 2004-09-17 12:16:42: --> MAIL From:<XXX@XXX.net.cn> SIZE=107747<br>Fri 2004-09-17 12:16:44: <-- 250 <XXX@XXX.net.cn>, Sender ok<br>Fri 2004-09-17 12:16:44: --> RCPT To:<BBB@BBB.gov.cn><br>Fri 2004-09-17 12:16:44: <-- 550 <BBB@BBB.gov.cn>, Recipient unknown<br>
--- End Transcript ---<br>
: Message contains [1] file attachments<br>

goxia

550 <BBB@BBB.gov.cn>, Recipient unknown<br>
写的很清楚，未知收件人！