In relation to the following printout of a telnet interaction with a mail server (see Figure...

 

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In relation to the following printout of a telnet interaction with a mail server (see Figure 3: telnet interaction with SMTP server): (i) Identify the line numbers (either individual line numbers or ranges of line numbers) that relate to the three phases of communications. (5 marks) (ii) Identify the line numbers (either individual line numbers or ranges of line numbers) that show data destined for, and understood by the User Agent and those that show data destined for, and understood by the Mail Transfer Agent. Justify your answer. 1. Trying 147.252.25.102... 2. Connected to smtp.dit.ie. (10 marks) 3. 220 msgstore1.dit.ie -- Oracle Communications Messaging Server 7u4-27.01(7.0.4.27.0) 64bit 4. HELO student.dit.ie 5. 250 msgstore1.dit.ie OK, [147.252.234.34]. 6. MAIL FROM: john.doe@dit.ie 7. 250 2.5.0 Address Ok. 8. RCPT TO: mary.jane@dit.ie 9. 250 2.1.5 mary.jane@dit.ie OK. 10. DATA 11. 354 Enter mail, end with a single ".". 12. From: john.doe@dit.ie 13. To: mary.jane@dit.ie 14. Subject: Dinner Tonight? 15. Fancy dinner tonight? 16.. (full stop) 17. 250 2.5.0 Ok, envelope id 0MVJ001@msgstorel.dit.ie 18. QUIT 19. 221 2.3.0 Bye received. Goodbye. 20. Connection closed. Figure 3: telnet interaction with SMTP server. In relation to the following printout of a telnet interaction with a mail server (see Figure 3: telnet interaction with SMTP server): (i) Identify the line numbers (either individual line numbers or ranges of line numbers) that relate to the three phases of communications. (5 marks) (ii) Identify the line numbers (either individual line numbers or ranges of line numbers) that show data destined for, and understood by the User Agent and those that show data destined for, and understood by the Mail Transfer Agent. Justify your answer. 1. Trying 147.252.25.102... 2. Connected to smtp.dit.ie. (10 marks) 3. 220 msgstore1.dit.ie -- Oracle Communications Messaging Server 7u4-27.01(7.0.4.27.0) 64bit 4. HELO student.dit.ie 5. 250 msgstore1.dit.ie OK, [147.252.234.34]. 6. MAIL FROM: john.doe@dit.ie 7. 250 2.5.0 Address Ok. 8. RCPT TO: mary.jane@dit.ie 9. 250 2.1.5 mary.jane@dit.ie OK. 10. DATA 11. 354 Enter mail, end with a single ".". 12. From: john.doe@dit.ie 13. To: mary.jane@dit.ie 14. Subject: Dinner Tonight? 15. Fancy dinner tonight? 16.. (full stop) 17. 250 2.5.0 Ok, envelope id 0MVJ001@msgstorel.dit.ie 18. QUIT 19. 221 2.3.0 Bye received. Goodbye. 20. Connection closed. Figure 3: telnet interaction with SMTP server.