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        <title>Proxmox Email Notification Configuration</title>
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            <h1>Proxmox Email Notification Configuration</h1>
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          <h2>Configuring User E-mail Address</h2>

<ol>
	<li>In a web browser, navigate to the Proxmox web UI and login</li>
	<li>Select Datacenter &gt; Permissions &gt; Users from the left navigation menus</li>
	<li>Double click the user to configure</li>
	<li>Complete the E-mail field on the Edit User form &gt; Click OK</li>
</ol>

<h2>Simple Configuration via Web UI</h2>

<p>By default, Proxmox will try to use the domain portion of the &quot;Email from address&quot; as the e-mail relay server.</p>

<ol>
	<li>Select Datacenter &gt; Options from the left navigation menus</li>
	<li>Double click the Email from address field</li>
	<li>Enter the e-mail address that Proxmox will send outgoing e-mails from &gt; Click OK</li>
	<li>Expand Datacenter &gt; Select the node name &gt; Click Shell in the left navigation menus</li>
	<li>Run the following commands in the terminal
	<div class="codeBlock CMD"># send a basic test email<br />
	echo &quot;Test email from Proxmox: $(hostname)&quot; | /usr/bin/proxmox-mail-forward<br />
	# output the mail log<br />
	cat /var/log/mail.log</div>
	</li>
	<li>Notice the relay is the domain (i12bretro.local) from the Email from address setting</li>
</ol>

<h2>Advanced Configuration via CLI</h2>

<p>To make more advanced configuration changes, like using a gmail account, you need to edit the postfix settings via command line</p>

<ol>
	<li>Back in the Proxmox web shell, run the following commands in the terminal
	<div class="codeBlock CMD"># install libsasl<br />
	apt install libsasl2-modules -y<br />
	# edit the postfix config<br />
	nano /etc/postfix/main.cf</div>
	</li>
	<li>Press CTRL+W and search for mydestination</li>
	<li>Comment out mydestination by adding a # to the beginning of the line</li>
	<li>Press CTRL+W and search for relayhost</li>
	<li>Comment out relayhost by adding a # to the beginning of the line</li>
	<li>Update or add the following configuration
	<p>relayhost = smtp.gmail.com:587<br />
	smtp_use_tls = yes<br />
	smtp_sasl_auth_enable = yes<br />
	smtp_sasl_security_options =<br />
	smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd<br />
	smtp_tls_CAfile = /etc/ssl/certs/Entrust_Root_Certification_Authority.pem</p>
	</li>
	<li>Press CTRL+O, Enter, CTRL+X to write the changes</li>
	<li>Continue with the following commands in the terminal
	<div class="codeBlock CMD"># create /etc/postfix/sasl_passwd<br />
	nano /etc/postfix/sasl_passwd</div>
	</li>
	<li>Add a line to configure gmail authentication
	<p>smtp.gmail.com:587 &lt;%youraccount%&gt;@gmail.com:&lt;%yourpassword%&gt;</p>
	</li>
	<li>Press CTRL+O, Enter, CTRL+X to write the changes</li>
	<li>Continue with the following commands in the terminal
	<div class="codeBlock CMD"># update postfix lookup tables<br />
	postmap hash:/etc/postfix/sasl_passwd<br />
	# limit access to sasl_passwd to only root<br />
	chmod 600 /etc/postfix/sasl_passwd<br />
	# restart postfix service<br />
	systemctl restart postfix<br />
	# test from postfix directly<br />
	echo &quot;Test email from Proxmox: $(hostname)&quot; | mail -s &quot;Proxmox Testing&quot; &lt;%youraccount%&gt;@gmail.com<br />
	# send a test from proxmox<br />
	echo &quot;Test email from Proxmox: $(hostname)&quot; | /usr/bin/proxmox-mail-forward</div>
	</li>
</ol>

<p>Sources: <a href="https://forum.proxmox.com/threads/get-postfix-to-send-notifications-email-externally.59940/" target="_blank">https://forum.proxmox.com/threads/get-postfix-to-send-notifications-email-externally.59940/</a>,<br />
<a href="https://www.reddit.com/r/homelab/comments/5nzmm3/setting_up_the_proxmox_email_alerts/" target="_blank">https://www.reddit.com/r/homelab/comments/5nzmm3/setting_up_the_proxmox_email_alerts/</a></p>          </div>
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