郵件傳輸代理

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郵件傳輸代理 ( MTA ) (也稱為郵件傳輸代理 , 郵件傳輸代理 ,或smtpd (短期SMTP的 守護進程 ) ) ,是一種計算機程序或者軟件代理轉讓電子郵件從一台計算機到另一個。

The term mail server is also used to mean a computer acting as an MTA that is running the appropriate software.任期的郵件服務器也被用來指電腦代理的MTA正在運行相應的軟件。 The term mail exchanger (MX), in the context of the Domain Name System formally refers to an IP address assigned to a device hosting a mail server , and by extension also indicates the server itself.任期郵件交換器 ( MX ) ,語境中的域名系統正式是指一個IP地址分配給一個設備主辦的郵件服務器 ,並延長還表明,服務器本身。



[編輯] 概述

MTA的接收郵件從另一個MTA的(中繼) ,從郵件用戶代理 ( MUA ) ,因此,代理作為一個郵件提交代理 (生活津貼) ,或是由海事局得到的郵件從一mua 。 The MTA works behind the scenes, while the user usually interacts with the MUA. MTA的幕後工作,而用戶通常互動與mua 。 Every time an MTA receives an e-mail, it will add a "Received:" trace header field to the top of the message.每一次的MTA收到一封電子郵件,它會添加一個“收到: ”微量的標題欄位上方的訊息。 In this way, there is a record of which MTAs handled the e-mail and in which order.在這種方式,是有紀錄,其中多邊貿易協議處理電子郵件和在哪些秩序。 Upon final delivery, the "Return-Path:" header will also be added to record the return path .後,最後交貨, “返回路徑: ”頭也將添加到創紀錄的返回路徑 。


The delivery of e-mail to a user's mailbox typically takes place via a mail delivery agent (MDA); many MTAs have basic MDA functionality built in, but a dedicated MDA like procmail can provide more sophistication.提供電子郵件給用戶的郵箱通常需要的地方通過郵件派遞服務代理 ( MDA )含量;很多多邊貿易協議已基本MDA的功能,內置在,但一個專門的MDA的一樣, procmail可以提供更多的複雜。

According to one survey, sendmail , Microsoft Exchange Server , Postfix , and Exim together control over 85% of market share for SMTP service. [1] Another survey suggests a more balanced playing field, though it included hosted email services such as Postini . [2]根據一項調查, Sendmail的 , 是Microsoft Exchange Server , postfix ,和exim共同控制超過85 %的市場佔有率為SMTP服務。 [ 1 ]的另一項調查顯示,一個更為平衡的公平競爭的環境,雖然它包括託管電子郵件服務,如postini 。


資料引用:[1]