RFC821-简单邮件传输协议（SMTP）中文版 - 3

答案：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:<Jones@BBN-VAX.ARPA> 

R: 250 OK 

　 

S: DATA 

R: 354 Start mail input; end with <CRLF>.<CRLF> 

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 <JQP@MIT-AI.ARPA> 

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 <Admin.MRC@SU-SCORE.ARPA> 

　 

S: SEND FROM:<EAK@MIT-MC.ARPA> 

R: 250 OK 

　 

S: RCPT TO:<Admin.MRC@SU-SCORE.ARPA> 

R: 250 OK 

　 

S: DATA 

R: 354 Start mail input; end with <CRLF>.<CRLF> 

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 <Admin.MRC@SU-SCORE.ARPA> 

　 

S: SEND FROM:<EAK@MIT-MC.ARPA> 

R: 250 OK 

　 

S: RCPT TO:<Admin.MRC@SU-SCORE.ARPA> 

R: 450 User not active now 

　 

S: RSET 

R: 250 OK 

　 

S: MAIL FROM:<EAK@MIT-MC.ARPA> 

R: 250 OK 

　 

S: RCPT TO:<Admin.MRC@SU-SCORE.ARPA> 

R: 250 OK 

　 

S: DATA 

R: 354 Start mail input; end with <CRLF>.<CRLF> 

S: Blah blah blah... 

S: ...etc. etc. etc. 

S: . 

R: 250 OK 

　 

S: QUIT 

R: 221 SU-SCORE.ARPA Service closing transmission channel 

  

上述问题的更有效的作法  

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 <Admin.MRC@SU-SCORE.ARPA> 

　 

S: SOML FROM:<EAK@MIT-MC.ARPA> 

R: 250 OK 

　 

S: RCPT TO:<Admin.MRC@SU-SCORE.ARPA> 

R: 250 User not active now, so will do mail. 

　 

S: DATA 

R: 354 Start mail input; end with <CRLF>.<CRLF> 

S: Blah blah blah... 

S: ...etc. etc. etc. 

S: . 

R: 250 OK 

　 

S: QUIT 

R: 221 SU-SCORE.ARPA Service closing transmission channel 

  

　　邮件列表 首先，两个邮件列表中的每一个在不同主机的不同会话上扩展， 
然后，通过转发主机向列表上的用户发送邮件。 

第一步：扩展第一个列表 

R: 220 MIT-AI.ARPA Simple Mail Transfer Service Ready 

S: HELO SU-SCORE.ARPA 

R: 250 MIT-AI.ARPA 

　 

S: EXPN Example-People 

R: 250-<ABC@MIT-MC.ARPA> 

R: 250-Fred Fonebone <Fonebone@USC-ISIQ.ARPA> 

R: 250-Xenon Y. Zither <XYZ@MIT-AI.ARPA> 

R: 250-Quincy Smith <@USC-ISIF.ARPA:Q-Smith@ISI-VAXA.ARPA> 

R: 250-<joe@foo-unix.ARPA> 

R: 250 <xyz@bar-unix.ARPA> 

　 

S: QUIT 

R: 221 MIT-AI.ARPA Service closing transmission channel 

　 

第二步：扩展第二个列表  

R: 220 MIT-MC.ARPA Simple Mail Transfer Service Ready  

S: HELO SU-SCORE.ARPA 

R: 250 MIT-MC.ARPA 

　 

S: EXPN Interested-Parties 

R: 250-Al Calico <ABC@MIT-MC.ARPA> 

R: 250-<XYZ@MIT-AI.ARPA> 

R: 250-Quincy Smith <@USC-ISIF.ARPA:Q-Smith@ISI-VAXA.ARPA> 

R: 250-<fred@BBN-UNIX.ARPA> 

R: 250 <xyz@bar-unix.ARPA> 

　 

S: QUIT 

R: 221 MIT-MC.ARPA Service closing transmission channel 

　 

第三步：通过转发主机向包括于两个列表中的所有用户发送邮件  

R: 220 USC-ISIE.ARPA Simple Mail Transfer Service Ready 

S: HELO SU-SCORE.ARPA 

R: 250 USC-ISIE.ARPA 

　 

S: MAIL FROM:<Account.Person@SU-SCORE.ARPA> 

R: 250 OK 

S: RCPT TO:<@USC-ISIE.ARPA:ABC@MIT-MC.ARPA> 

R: 250 OK 

S: RCPT TO:<@USC-ISIE.ARPA:Fonebone@USC-ISIQA.ARPA> 

R: 250 OK 

S: RCPT TO:<@USC-ISIE.ARPA:XYZ@MIT-AI.ARPA> 

R: 250 OK 

S: RCPT 

TO:<@USC-ISIE.ARPA,@USC-ISIF.ARPA:Q-Smith@ISI-VAXA.ARPA> 

R: 250 OK 

S: RCPT TO:<@USC-ISIE.ARPA:joe@FOO-UNIX.ARPA> 

R: 250 OK 

S: RCPT TO:<@USC-ISIE.ARPA:xyz@BAR-UNIX.ARPA> 

R: 250 OK 

S: RCPT TO:<@USC-ISIE.ARPA:fred@BBN-UNIX.ARPA> 

R: 250 OK 

　 

S: DATA 

R: 354 Start mail input; end with <CRLF>.<CRLF> 

S: Blah blah blah... 

S: ...etc. etc. etc. 

S: . 

R: 250 OK 

　 

S: QUIT 

R: 221 USC-ISIE.ARPA Service closing transmission channel 


转发的情况 

R: 220 USC-ISIF.ARPA Simple Mail Transfer Service Ready 

S: HELO LBL-UNIX.ARPA 

R: 250 USC-ISIF.ARPA 

　 

S: MAIL FROM:<mo@LBL-UNIX.ARPA> 

R: 250 OK 

　 

S: RCPT TO:<fred@USC-ISIF.ARPA> 

R: 251 User not local; will forward to <Jones@USC-ISI.ARPA> 

　 

S: DATA 

R: 354 Start mail input; end with <CRLF>.<CRLF> 

S: Blah blah blah... 

S: ...etc. etc. etc. 

S: . 

R: 250 OK 

　 

S: QUIT 

R: 221 USC-ISIF.ARPA Service closing transmission channel 

第一步：尝试第一台主机上的邮箱 

R: 220 USC-ISIF.ARPA Simple Mail Transfer Service Ready 

S: HELO LBL-UNIX.ARPA 

R: 250 USC-ISIF.ARPA 

　 

S: MAIL FROM:<mo@LBL-UNIX.ARPA> 

R: 250 OK 

　 

S: RCPT TO:<fred@USC-ISIF.ARPA> 

R: 251 User not local; will forward to <Jones@USC-ISI.ARPA> 

　 

S: RSET 

R: 250 OK 

　 

S: QUIT 

R: 221 USC-ISIF.ARPA Service closing transmission channel 

第二步：尝试第二台主机上的邮箱 

R: 220 USC-ISI.ARPA Simple Mail Transfer Service Ready 

S: HELO LBL-UNIX.ARPA 

R: 250 USC-ISI.ARPA 

　 

S: MAIL FROM:<mo@LBL-UNIX.ARPA> 

R: 250 OK 

　 

S: RCPT TO:<Jones@USC-ISI.ARPA> 

R: OK 

　 

S: DATA 

R: 354 Start mail input; end with <CRLF>.<CRLF> 

S: Blah blah blah... 

S: ...etc. etc. etc. 

S: . 

R: 250 OK 

　 

S: QUIT 

R: 221 USC-ISI.ARPA Service closing transmission channel 

许多接收者的情况 

R: 220 BERKELEY.ARPA Simple Mail Transfer Service Ready 

S: HELO USC-ISIF.ARPA 

R: 250 BERKELEY.ARPA 

　 

S: MAIL FROM:<Postel@USC-ISIF.ARPA> 

R: 250 OK 

　 

S: RCPT TO:<fabry@BERKELEY.ARPA> 

R: 250 OK 

　 

S: RCPT TO:<eric@BERKELEY.ARPA> 

R: 552 Recipient storage full, try again in another transaction 

　 

S

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