投递失败退信的原因

cstole

最经发信总是出现永久投递失败，但失败的原因又不甚了解，不知道哪位老兄能帮忙看看，解释一下是什么原因...

1.在下面的退信中出现的：501 5.5.4 Unrecognized parameter ，这个无法识别的参数是什么意思？是什么原因造成的？

Wed 2010-04-21 16:04:55: Parsing message <xxxxxxxxxxxxxxxxxxxxxxxx\pd35000114008.msg>
Wed 2010-04-21 16:04:55: * From: lucyxu@spec.com
Wed 2010-04-21 16:04:55: * To: susanliu@kps-engr.com
Wed 2010-04-21 16:04:55: * Subject: =?gb2312?B?sOzA7dbQufrKr9PNzOzIu8b4vK/Nxbmry77O79fKuanTpsnM17zI6w==?= =?gb2312?B?ytbQ+LXEzajWqg==?=
Wed 2010-04-21 16:04:55: * Size (bytes): 56330
Wed 2010-04-21 16:04:55: * Message-ID: <EHEEJDFHFJHKELHNBFOLCEBLCEAA.lucyxu@spec.com>
Wed 2010-04-21 16:04:55: * Route slip host: kps-engr.com
Wed 2010-04-21 16:04:55: * Route slip port: 25
Wed 2010-04-21 16:04:55: Attempting SMTP connection to [kps-engr.com]
Wed 2010-04-21 16:04:55: Resolving MX records for [kps-engr.com] (DNS Server: 61.177.7.1)...
Wed 2010-04-21 16:04:55: * P=010 S=000 D=kps-engr.com TTL=(60) MX=[mail.kps-engr.com] {64.199.145.99}
Wed 2010-04-21 16:04:55: Attempting SMTP connection to [64.199.145.99:25]
Wed 2010-04-21 16:04:55: Waiting for socket connection...
Wed 2010-04-21 16:04:55: * Connection established (192.168.0.101:4888 -> 64.199.145.99:25)
Wed 2010-04-21 16:04:55: Waiting for protocol to start...
Wed 2010-04-21 16:04:56: <-- 220 KPS01.KPS-Engr.local Microsoft ESMTP MAIL Service, Version:6.0.3790.3959 ready at
Wed, 21 Apr 2010 02:58:59 -0500
Wed 2010-04-21 16:04:56: --> EHLO spec.com
Wed 2010-04-21 16:04:56: <-- 250-KPS01.KPS-Engr.local Hello [218.4.152.101]
Wed 2010-04-21 16:04:56: <-- 250-TURN
Wed 2010-04-21 16:04:56: <-- 250-SIZE
Wed 2010-04-21 16:04:56: <-- 250-ETRN
Wed 2010-04-21 16:04:56: <-- 250-PIPELINING
Wed 2010-04-21 16:04:56: <-- 250-DSN
Wed 2010-04-21 16:04:56: <-- 250-ENHANCEDSTATUSCODES
Wed 2010-04-21 16:04:56: <-- 250-8bitmime
Wed 2010-04-21 16:04:56: <-- 250-BINARYMIME
Wed 2010-04-21 16:04:56: <-- 250-CHUNKING
Wed 2010-04-21 16:04:56: <-- 250-VRFY
Wed 2010-04-21 16:04:56: <-- 250-X-EXPS GSSAPI NTLM LOGIN
Wed 2010-04-21 16:04:56: <-- 250-X-EXPS=LOGIN
Wed 2010-04-21 16:04:56: <-- 250-AUTH GSSAPI NTLM LOGIN
Wed 2010-04-21 16:04:56: <-- 250-AUTH=LOGIN
Wed 2010-04-21 16:04:56: <-- 250-X-LINK2STATE
Wed 2010-04-21 16:04:56: <-- 250-XEXCH50
Wed 2010-04-21 16:04:56: <-- 250 OK
Wed 2010-04-21 16:04:56: --> MAIL From:<lucyxu@spec.com> SIZE=56330
Wed 2010-04-21 16:04:56: <-- 250 2.1.0 lucyxu@spec.com....Sender OK
Wed 2010-04-21 16:04:56: --> RCPT To:<kevin.wang@kps-engr.com>
Wed 2010-04-21 16:04:56: <-- 250 2.1.5 kevin.wang@kps-engr.com
Wed 2010-04-21 16:04:56: --> RCPT To:<susanliu@kps-engr.com>
Wed 2010-04-21 16:04:57: <-- 250 2.1.5 susanliu@kps-engr.com
Wed 2010-04-21 16:04:57: --> DATA
Wed 2010-04-21 16:04:57: <-- 501 5.5.4 Unrecognized parameter
Wed 2010-04-21 16:04:57: --> QUIT

2.下面退信日志中出现的 ESMTP not accepting messages 又是什么问题？？是发送方的问题还是接受方的问题？
Wed 2010-04-21 15:14:00: Parsing message<xxxxxxxxxxxxxxxxxxxxxxxx\pd35000113988.msg>
Wed 2010-04-21 15:14:00: *  From: [email=tony.ye@spec,com]tony.ye@spec,com[/email]
Wed 2010-04-21 15:14:00: *  To: marco.blasioli@fbmhudson.com  
Wed 2010-04-2115:14:00: *  Subject: Bill of Lading  Wed 2010-04-21 15:14:00: *  Size(bytes): 229540  
Wed 2010-04-21 15:14:00: *  Message-ID:<IPEHKGMBEMMJGEJFBALOCEJDCBAA.tony.ye@spec.com>
Wed 2010-04-21 15:14:00: *  Route slip host: sdvusa.com  
Wed 2010-04-2115:14:00: *  Route slip port: 25  Wed 2010-04-21 15:14:00: Attempting SMTP connection to[sdvusa.com]
Wed 2010-04-21 15:14:00: Resolving MX records
for [sdvusa.com] (DNS Server: 61.177.7.1)...
Wed 2010-04-21 15:14:00: *  P=010 S=000 D=sdvusa.com TTL=(54) MX=[mx1.sdvusa.com] {69.18.136.194}  
Wed 2010-04-21 15:14:00: *  P=010 S=001 D=sdvusa.com TTL=(54) MX=[mx2.sdvusa.com] {69.18.136.195}
Wed 2010-04-21 15:14:00: *  P=010 S=002 D=sdvusa.com TTL=(54) MX=[mx3.sdvusa.com]
{69.18.136.193}  
Wed 2010-04-21 15:14:00: Attempting SMTP connection to [69.18.136.194:25]  Wed 2010-04-21 15:14:00: Waiting for socket connection...
Wed 2010-04-21 15:14:00: *  Connection established (192.168.0.101:4721 ->69.18.136.194:25)  
Wed 2010-04-21 15:14:00: Waiting for protocol to start...
Wed 2010-04-21 15:14:02: <-- 554 proofpoint1.invision.net ESMTP not accepting messages
Wed 2010-04-21 15:14:02: --> QUIT