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。

youdao

E-mail is sent via mail transfer agents, mail delivery agents, and mail user agents.

电子邮件通过邮件传输代理、邮件发送代理及邮件用户代理发送。

youdao

This method is quicker than mail transfer. The seller can receive the money at an early date.

这种方法比信汇快，卖方可以提早收到货款。

youdao

Ozancin wagged his finger at the sendmail mail transfer agent (MTA) as the cause of many past security exploits, including but not limited to buffer overflows.

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As we know, that's not the whole story, because there are lots of one-off factors acting to pull down the final figure for 2012-13, including the Royal Mail pension fund transfer and the debt interest now being transferred to the Treasury by the Bank of England.

BBC: More red ink for Chancellor George Osborne

The protocols used to encode and transfer e-mail messages are simple and are not owned by anyone.

ECONOMIST: Monitor