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→Configure mailing list for postfix
:* Switch back to regular user and execute the command in the "Command" column and record the output in the "Response" column. Please replace the IP address place holder [IP-Addr] with the actual IP address of your VM2.
{| class="wikitable" cellspacing="0" width="90%" cellpadding="5" border="1" style="text-align: left; vertical-align: top; border-spacing: 2px; border: 1px solid darkgray"|+ SMTP command / Response|-! - - - Command - - -! - - - - - - - - - - - - Response - - - - - - - - - - - - |- style="vertical-align: top; background: none"| nc [IP-Addr] 25| 220 pri-dns.gbecker.ops ESMTP Postfix|- style="vertical-align: top; background: #CCffCC"| HELO seneca.ops| <br> <br> <br>|- style="vertical-align: top; background: #FFCCCC"|EXPN ops535m|<br>|- style="vertical-align: top; background: #ccffcc"|VRFY ops535m|<br>|- style="vertical-align: top; background: #ccffcc"|HELP|<br>|- style="vertical-align: top; background: #ffcccc"|QUIT|<br>|}