mail 问题请教？
>N 1 MAILER-DAEMON@helix. Tue Mar 16 16:05 67/2284 "Returned mail: see transcript for details"
& 1
Message 1:
From MAILER-DAEMON@aaa.bbb.com Tue Mar 16 16:05:42 2010
Date: Tue, 16 Mar 2010 16:05:42 +0800
From: Mail Delivery Subsystem <MAILER-DAEMON@aaa.bbb.com>
To: <iosonl@aaa.bbb.com>
MIME-Version: 1.0
Content-Type: multipart/report; report-type=delivery-status;
  boundary="o2G85gjN022910.1268726742/aaa.bbb.com"
Subject: Returned mail: see transcript for details
Auto-Submitted: auto-generated (failure)

This is a MIME-encapsulated message

--o2G85gjN022910.1268726742/aaa.bbb.com

The original message was received at Tue, 16 Mar 2010 16:05:06 +0800
from aaa.bbb.com [127.0.0.1]

  ----- The following addresses had permanent fatal errors -----
<iosinfo@[10.7.1.13]>
  (reason: 501 5.1.3 Invalid address)

  ----- Transcript of session follows -----
  ... while talking to [10.7.1.13]:
>>> DATA
<<< 501 5.1.3 Invalid address
554 5.0.0 Service unavailable
<<< 503 5.5.2 Need rcpt command

--o2G85gjN022910.1268726742/aaa.bbb.com
Content-Type: message/delivery-status

Reporting-MTA: dns; aaa.bbb.com
Received-From-MTA: DNS; aaa.bbb.com
Arrival-Date: Tue, 16 Mar 2010 16:05:06 +0800

Final-Recipient: RFC822; iosinfo@[10.7.1.13]
Action: failed
Status: 5.1.3
Remote-MTA: DNS; [10.7.1.13]
Diagnostic-Code: SMTP; 501 5.1.3 Invalid address
Last-Attempt-Date: Tue, 16 Mar 2010 16:05:32 +0800

--o2G85gjN022910.1268726742/aaa.bbb.com
Content-Type: message/rfc822
Return-Path: <iosonl@aaa.bbb.com>
Received: from aaa.bbb.com (aaa.bbb.com [127.0.0.1])
  by aaa.bbb.com (8.13.1/8.13.1) with ESMTP id o2G83kjN022897
  for <iosinfo@[10.7.1.13]>; Tue, 16 Mar 2010 16:05:06 +0800
Received: (from iosonl@localhost)
  by aaa.bbb.com (8.13.1/8.13.1/Submit) id o2G83k9W022896
  for iosinfo@[10.7.1.13]; Tue, 16 Mar 2010 16:03:46 +0800
Date: Tue, 16 Mar 2010 16:03:46 +0800
From: iosonl <iosonl@aaa.bbb.com>
Message-Id: <201003160803.o2G83k9W022896@aaa.bbb.com>
To: iosinfo@[10.7.1.13]
Subject: ta

h

--o2G85gjN022910.1268726742/aaa.bbb.com--


请问是什么问题，怎么解决？

------解决方案--------------------
你自己设置了DNS了吧 
设置反向解析了吗
------解决方案--------------------
DNS设置错误吧