mail transfer agent

常见例句

A mail transfer agent such as Sendmail 8.7 or later
一个邮件传输代理，比如 Sendmail 8.7 或者更高的版本。
The mail transfer agent receives the messages from another mail transfer agent, a mail user agent, or a mail submission agent.
邮件传输代理从另一个邮件传输代理、邮件用户代理或邮件提交代理处接收消息。
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（mail transfer 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。