这种对数据的编码方式使邮件传输代理不可能修改结果八位元。
It encodes the data in such a way that the mail transport agent is unlikely to modify the resulting octets.
一个邮件传输代理，比如Sendmail 8.7或者更高的版本。
邮件传输代理也叫邮件服务器，是用来把邮件从一台计算机发送到另一台计算机的软件。
The mail transfer agent is also known as the mail server and is simply software that sends E-mail from one computer to another.
例如，如果您正在对一个邮件用户代理程序或邮件传输代理程序进行打包，那么有些特定的考虑事项适用于这种情形。
For example, if you're packaging a mail user agent or mail transport agent, there are some specific considerations that apply.
所有的电子邮件都通过邮件传输代理(mailtransfer agent,MTA)来传输，Sendmail则是最流行的MTA，所以这个警告影响了世界范围内的很多组织。
All electronic mail is transferred using a mail transfer agent (MTA), and Sendmail is the most popular MTA, so this warning affected many organizations worldwide.
所有的电子邮件都通过邮件传输代理(mailtransfer agent,MTA)来传输，Sendmail则是最流行的MTA，所以这个警告影响了世界范围内的很多组织。
All electronic mail is transferred using a mail transfer agent (MTA), and Sendmail is the most popular MTA, so this warning affected many organizations worldwide.
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