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→Setup Your MTA to Use Correct Domain
::In order for this to work, we need to add a DNS record that will point mail sent to the domain towards one of the SMTP servers configured to accept it.
<ol><li value="6">Add an '''MX''' record to the forward lookup zone on vm1 so that all incoming mail addressed to the domain is sent to your vm3.</li><li>Restart the service and use the '''dig''' command to confirm that it works.</li><li>Send an email from your '''vm2 ''' to '''root@yourdomain.org.'''</li><li>Confirm that it arrives on your '''vm3''' machine.</li></ol>
=== Relaying Email Through Another Server===