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OPS335 Lab 4

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#Re-issue the mail command. What happened? If the mail message that you read no longer shows is displayed, what would be the reason for this? Record your answer in your OPS335 lab log-book.

#Try sending another e-mail from your VM2 account to yourself, but using your first name instead by issuing the following command: '''mail -s "Lab4a - Local - Test2" <yourFirstName>'''

#Issue the '''mailq''' command on your VM2 machine (you will need to be root) to view the mail queue. Why would this command be useful for an administrator?#Now, issue the '''mail''' command to see if you received that e-mail message. Did it work? If so, why? Record your observations in your OPS335 lab logbook. #~~Issue~~ Finally, issue the following mail commands ~~for each of the following~~ (using various e-mail addresses): '''mail -s "Lab4a - Local - Test3" <yourSenecaID>.<vm2-IPADDR>''' ~~ ~~'''mail -s "Lab4a - Local - Test4" <yourFirstName>.<vm2-IPADDR>''' '''mail -s "Lab4a - Local - Test5" <yourSenecaID>.vm2.<yourSenecaID>.org''' '''mail -s "Lab4a - Local - Test6" <yourFirstName>.vm2.<yourSenecaID>.org'''

#Which of the following commands worked? Record your observations in your OPS335 lab logbook.

~~===Test email using host names===~~

~~Let's complete this lab by sending email messages using our recently-created domain name:~~

~~'''Perform the following Steps:'''~~

~~#Use the '''host''' and '''hostname''' commands to confirm that each of your machines has the same ''hostname'' and that the DNS service verifies this to be true.~~

~~#Restart your MTA (postfix) server if you changed the hostname on either mail server.~~

#Try sending mail to yourself on both machines. For example, as the username <senecaID> on VM 3, use the command: '''mail <senecaID>@vm2.<yourdomain>.org''' '''NOTE:''' the machine will prompt for a subject: enter "testing" without the quotes.

#Enter the body of your e-mail message. When you have completed entering your email message, enter a period (.) in column 1 on the last line of your letter. This will send the signal: '''end-of-file''' and your letter will be mailed. You should end up back at the shell prompt. If you make a mistake, use '''CTRL-C''' to cancel the email (DO NOT USE CTRL-Z).

~~#Use the '''mailq''' command on both machines (you will need to be root) to view the mail queue. Why would this command be useful for an administrator?~~

~~#Use the mail command to check to see if you have received any mail.~~

'''Record steps, commands, and your observations in INVESTIGATION 2 in your OPS335 lab log-book'''

Msaul

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OPS335 Lab 4

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