linux自带邮件功能发送邮件失败解决办法

使用linux自带的邮件功能测试邮件发送功能如下：

$ mail -s test xxx@163.com

sldkfjlskdjf[CTRL+D]

cc:

有时会出再提示:

You have a new mail in /var/spool/mail/root

并且在邮箱中看不到邮件;

解决办法:

1、查看出错的日志

$ tail -n 50 /var/spool/mail/root

From MAILER-DAEMON@ltv_73 Thu Dec 12 11:35:28 2013

Return-Path:

Received: from localhost (localhost)

by ltv_73 (8.13.8/8.13.8) id rBC3ZSPe006446;

Thu, 12 Dec 2013 11:35:28 +0800

Date: Thu, 12 Dec 2013 11:35:28 +0800

From: Mail Delivery Subsystem

Message-Id: <201312120335.rBC3ZSPe006446@ltv_73>

To:

MIME-Version: 1.0

Content-Type: multipart/report; report-type=delivery-status;

boundary="rBC3ZSPe006446.1386819328/ltv_73"

Subject: Returned mail: see transcript for details

Auto-Submitted: auto-generated (failure)

This is a MIME-encapsulated message

--rBC3ZSPe006446.1386819328/ltv_73

The original message was received at Thu, 12 Dec 2013 11:35:18 +0800

from 41_154 [127.0.0.1]

----- The following addresses had permanent fatal errors -----

(reason: 530 5.7.1 Client was not authenticated)

----- Transcript of session follows -----

... while talking to mail.163.com.:

>>> MAIL From: SIZE=519

<<< 530 5.7.1 Client was not authenticated

554 5.0.0 Service unavailable

--rBC3ZSPe006446.1386819328/ltv_73

Content-Type: message/delivery-status

Reporting-MTA: dns; ltv_73

Received-From-MTA: DNS; sohu_41_154

Arrival-Date: Thu, 12 Dec 2013 11:35:18 +0800

Final-Recipient: RFC822; xxx@163.com

Action: failed

Status: 5.7.1

Diagnostic-Code: SMTP; 530 5.7.1 Client was not authenticated

Last-Attempt-Date: Thu, 12 Dec 2013 11:35:28 +0800

2、 修改DNS

$ vim /etc/resolv.conf

修改成可用的DNS，这个地方的修改保存后即生效;

3、修改主机名【也可不做这一步】

$ sysctl kernel.hostname=newhostname

4、 重启邮件服务

$ service sendmail restart