Sendmail邮件服务器快速指南(国外英文资料).doc
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Sendmail邮件服务器快速指南(国外英文资料)
The Sendmail mail server quick guide
In this paper,
E-mail is one of the most common USES on the Internet, and many corporate users often use the free E-mail system. This article guides users from the sendmail source code to build a mail system that can meet the basic needs of the job, starting with step by step. (2002-07-05 08:28:13)
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By lanf, from LinuxAID ideal
An overview of the
Sendmail is the most important mail transfer agent. Its important to understand how E-mail works. In general, we decompose E-mail programs into user agents, transport agents, and delivery agents. The user agent is used to accept the users instructions, sending the users mail to the mail transfer agent such as outlook express, foxmail, etc. The delivery agent obtains mail from the mail transfer agent to the end users mailbox, such as procmail.
When a user attempts to send an email, he cant directly to send letters to each other on the machine, the user agent must try to find a mail transfer agent, mail submitted to it. Mail transfer agent after received the mail, first will save it in its own buffer queue, and then, according to the target address of the mail, mail transfer agent program will find should be responsible for the destination address of the mail transfer agent server, and through the network will mail sent to it. The other persons server receives the mail and stores it in the local area until the recipient of the E-mail sees his E-mail address.
Obviously, mail transfer from server to server, and each user must have the information stored on the server space (called the mailbox) can accept email (send mail is not affected by this limit). As you can see, a mail transfer agents main job is to monitor the request of the
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