浪子心云
Sendmail不能发所有的外部邮箱
各位大侠们，我公司自己建了个邮件服务器（Red Hat Linux 9.0+Sendmal），以前都能正常收发外部的邮箱如：163、126、yahoo等。但是最近只要公司内的用户发所有的外部邮箱，邮件都会被退回。退回的信息如下：
The original message was received at Fri, 20 Jun 2008 09:20:26 +0800
from [60.161.13.42]
----- The following addresses had permanent fatal errors -----
<[email]divesquill@163.com[/email]>
----- Transcript of session follows -----
550 5.1.2 <[email]divesquill@163.com[/email]>... Host unknown (Name server: 163.com: no data known)
451 4.0.0 hash map "Alias0": unsafe map file /etc/aliases.db: Permission denied
Reporting-MTA: dns; localhost.localdomain
Received-From-MTA: DNS; [60.161.13.42]
Arrival-Date: Fri, 20 Jun 2008 09:20:26 +0800
Final-Recipient: RFC822; [email]divesquill@163.com[/email]
Action: failed
Status: 5.1.2
Remote-MTA: DNS; 163.com
Last-Attempt-Date: Fri, 20 Jun 2008 09:20:52 +0800
------------------------------------------------------------
From: "hlwrj" <[email]hlwrj@mail.ho.cn[/email]>
To: "divesquill@163.com" <[email]divesquill@163.com[/email]>
Subject: 测试
Date: Fri20 Jun 2008 09:16:17 +0800
请大侠们帮忙看看是什么问题，在线等待。请大侠们帮帮忙哪。。。急死人哪。。。:em16: