邮件服务器问题请教

影子传说

邮件服务器是ppm10103.shadow.com
user是这个服务器上的帐号
DNS也可以把所有shadow.com域指向ppm10103.shadow.com上,但是确出错了

From [email protected]  Tue May 31 18:31:17 2005
Date: Tue, 31 May 2005 18:31:17 +0800
From: Mail Delivery Subsystem <[email protected]>
To: [email protected]
To: <[email protected]>
MIME-Version: 1.0
Content-Type: multipart/report; report-type=delivery-status;
        boundary="j4VAVHjQ002445.1117535477/ppm10103.shadow.com"
Subject: Returned mail: see transcript for details
Auto-Submitted: auto-generated (failure)

This is a MIME-encapsulated message

--j4VAVHjQ002445.1117535477/ppm10103.shadow.com

The original message was received at Tue, 31 May 2005 18:31:17 +0800
from localhost [127.0.0.1]

   ----- The following addresses had permanent fatal errors -----
<[email protected]>

   ----- Transcript of session follows -----
554 5.0.0 MX list for shadow.com. points back to ppm10103.shadow.com
554 5.3.5 Local configuration error
这个是什么意思呢
--j4VAVHjQ002445.1117535477/ppm10103.shadow.com
Content-Type: message/delivery-status

Reporting-MTA: dns; ppm10103.shadow.com
Received-From-MTA: DNS; localhost
Arrival-Date: Tue, 31 May 2005 18:31:17 +0800

Final-Recipient: RFC822; [email protected]
Action: failed
Status: 5.5.0
Remote-MTA: DNS; shadow.com
Last-Attempt-Date: Tue, 31 May 2005 18:31:17 +0800

--j4VAVHjQ002445.1117535477/ppm10103.shadow.com
Content-Type: message/rfc822

Return-Path: <[email protected]>
Received: from ppm10103.shadow.com (localhost [127.0.0.1])
        by ppm10103.shadow.com (8.12.10/8.12.10) with ESMTP id j4VAVHjQ002443
        for <[email protected]>; Tue, 31 May 2005 18:31:17 +0800
Received: (from user@localhost)
        by ppm10103.shadow.com (8.12.10/8.12.10/Submit) id j4VAVHOc002441
        for [email protected]; Tue, 31 May 2005 18:31:17 +0800
Date: Tue, 31 May 2005 18:31:17 +0800
From: [email protected]
Message-Id: <[email protected]>
To: [email protected]
Subject: why cannt

HIHIHHIHIHIHIHIH
HIHIHIH
JHIH

--j4VAVHjQ002445.1117535477/ppm10103.shadow.com--

影子传说

DNS应该没有问题
nslookup
Note:  nslookup is deprecated and may be removed from future releases.
Consider using the `dig' or `host' programs instead.  Run nslookup with
the `-sil[ent]' option to prevent this message from appearing.
> set q=mx
> shadow.com
Server:         192.168.0.89
Address:        192.168.0.89#53

shadow.com      mail exchanger = 5 ppm10103.shadow.com.