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→INVESTIGATION 3: SENDING EMAIL BETWEEN MTAs for vm2 and vm3 (NO ENCRYPTION)
# Once that is complete, send an email from '''root on vm2''' to '''root on vm3''', and then reply '''from vm3 to vm2'''.
# If both messages arrive, both MTAs are working. If not, use the troubleshooting tools and techniques you have already learned to diagnose and fix the problem.<br><br>
{{Admon/important |Backup your VMs!|You MUST perform a '''full backup''' of ALL of your VMs whenever you complete your '''OPS335 labs''' or when working on your '''OPS335 assignments'''. You should be using the dump or rsync commandscommand, and you should use the Bash shell script that you were adviced to create in order to backup all of your VMs.}}
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'''Record steps, commands, and your observations in INVESTIGATION 3 in your OPS335 lab log-book'''