Question: 2) Test connectivity to the Gmail SMTP server(5 marks) a. Research how to use nslookup to find an SMTP server. i. Include reference to

2) Test connectivity to the Gmail SMTP server(5 marks) a. Research how to use nslookup to find an SMTP server. i. Include reference to where you found this information ii. What is an SMTP server? b. What is the SMTP server for gmail.com? i. Show a screen shot of the command used to find this ii. What is the server name? Hint: look for MX preference 5 C. iii. Include a screen shot of the Wireshark DNS requests How can you test connectivity to an SMTP server at multiple layers of the OSI model? i. Include Wireshark screen shots for each test (success or failed) ii. Include screen shots of your command line for each test iii. Are you able to get layer 3 connectivity? 1. Show your test iv. Are you able to get transport layer connectivity? 1. Show your test v. For application layer testing, Research how to send email using telnet, through an SMTP server. NOTE: you will not be able to successfully test sending email from our network.

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