From: Author: (09:08:00)
Step 2: forward the host to the target host
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
Confirm and send
R: 220 SU-SCORE.ARPA Simple Mail Transfer Service Ready
S: HELO MIT-MC.ARPA
R: 250 SU-SCORE.ARPA
S: VRFY cripin
R: 250 Mark cripin <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...
S:... etc. etc.
S :.
R: 250 OK
S: QUIT
R: 221 SU-SCORE.ARPA Service closing transmission channel
To get and send an email, first determine the user name, and then try to send the email to the user terminal,
If it fails, it is sent to the user's mailbox.
R: 220 SU-SCORE.ARPA Simple Mail Transfer Service Ready
S: HELO MIT-MC.ARPA
R: 250 SU-SCORE.ARPA
S: VRFY cripin
R: 250 Mark cripin <Admin.MRC@SU-SCORE.ARPA>
S: send from: <EAK@MIT-MC.ARPA>
R: 250 OK
S: rcpt to: <Admin.MRC@SU-SCORE.ARPA>
