提示：本说明以me@companyname.net.cn 做为企业邮箱地址，其中以me作为用户名，companyname.net.cn作为企业域名来进行说明。
   
1.  当发信人采用公司的企业邮箱地址me@companyname.net.cn发送邮件给airtelmail.in的企业邮箱地址以后收到了一封由postmaster@corpease.net 发送的系统退信,信息内容如下:

-----Original Message-----
From: Postmaster@corpease.net [mailto:Postmaster@corpease.net]
Sent: Wednesday, August 13, 2008 5:56 PM
To: me@companyname.net.cn
Subject: 系统退信(bounce.letter)

This message is generated by COREMAIL email system.

I'm sorry to have to inform you that the message returned

The message to user@airtelmail.in is bounced because : Host airtelmail.in(209.85.143.27) RCPT TO said 450-4.2.1 The user you are trying to contact is receiving mail at a rate

450-4.2.1 that prevents additional messages from being delivered. Please

450-4.2.1 resend your message at a later time. If the user is able to

450-4.2.1 receive mail at that time, your message will be delivered.

450-4.2.1 For more information, please visit

450 4.2.1 http://mail.google.com/support/bin/answer.py?answer=6592 22si4352673tim.10

 

你发送到user@airtelmail.in的邮件由于以下原因被退回 : Host airtelmail.in(209.85.143.27) RCPT TO said 450-4.2.1 The user you are trying to contact is receiving mail at a rate

450-4.2.1 that prevents additional messages from being delivered. Please

450-4.2.1 resend your message at a later time. If the user is able to

450-4.2.1 receive mail at that time, your message will be delivered.

450-4.2.1 For more information, please visit

450 4.2.1 http://mail.google.com/support/bin/answer.py?answer=6592 22si4352673tim.10

2. 原因分析:

这是一个对方服务器临时性的问题，是对方短时间内收到的邮件太多，达到对方上限，导致邮件投递失败。这个问题对方服务器短时间内就可以处理完成。
       
3.  解决方案:

稍后重新投递信件给收件人。