RFC821-简单邮件传输协议（SMTP）中文版 - 3

时间：2022-07-02 10:34:32 编辑：袖梨来源：一聚教程网

本文出自: 作者: (2001-11-23 09:08:00)
第二步：转发主机到目的主机
R: 220 BBN-VAX.ARPA Simple Mail Transfer Service Ready
S: HELO USC-ISIE.ARPA
R: 250 BBN-VAX.ARPA
　
S: MAIL FROM:<@USC-ISIE.ARPA:JQP@MIT-AI.ARPA>
R: 250 OK
　
S: RCPT TO:
R: 250 OK
　
S: DATA
R: 354 Start mail input; end with .
S: Received: from MIT-AI.ARPA by USC-ISIE.ARPA ;
2 Nov 81 22:40:10 UT
S: Date: 2 Nov 81 22:33:44
S: From: John Q. Public
S: Subject: The Next Meeting of the Board
S: To: Jones@BBN-Vax.ARPA
S:
S: Bill:
S: The next meeting of the board of directors will be
S: on Tuesday.
S: John.
S: .
R: 250 OK
　
S: QUIT
R: 221 USC-ISIE.ARPA Service closing transmission channel

确认和发送
R: 220 SU-SCORE.ARPA Simple Mail Transfer Service Ready
S: HELO MIT-MC.ARPA
R: 250 SU-SCORE.ARPA
　
S: VRFY Crispin
R: 250 Mark Crispin
　
S: SEND FROM:
R: 250 OK
　
S: RCPT TO:
R: 250 OK
　
S: DATA
R: 354 Start mail input; end with .
S: Blah blah blah...
S: ...etc. etc. etc.
S: .
R: 250 OK
　
S: QUIT
R: 221 SU-SCORE.ARPA Service closing transmission channel

获得和发送邮件首先确定用户名，然后尝试将邮件发送到用户终端，
当它失败时，发送到用户邮箱。
R: 220 SU-SCORE.ARPA Simple Mail Transfer Service Ready
S: HELO MIT-MC.ARPA
R: 250 SU-SCORE.ARPA
　
S: VRFY Crispin
R: 250 Mark Crispin
　
S: SEND FROM:
R: 250 OK
　
S: RCPT TO:

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