Proxmox Email Notification Configuration
100#Proxmox #Email #Notifications #Configuration
Full steps can be found at https://i12bretro.github.io/tutorials/0717.html
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Configuring User E-mail Address
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01. In a web browser, navigate to the Proxmox web UI and login
02. Select Datacenter ≫ Permissions ≫ Users from the left navigation menus
03. Double click the user to configure
04. Complete the E-mail field on the Edit User form ≫ Click OK
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Simple Configuration via Web UI
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By default, Proxmox will try to use the domain portion of the "Email from address" as the e-mail relay server.
01. Select Datacenter ≫ Options from the left navigation menus
02. Double click the Email from address field
03. Enter the e-mail address that Proxmox will send outgoing e-mails from ≫ Click OK
04. Expand Datacenter ≫ Select the node name ≫ Click Shell in the left navigation menus
05. Run the following commands in the terminal
# send a basic test email
echo "Test email from Proxmox: $(hostname)" | /usr/bin/proxmox-mail-forward
# output the mail log
cat /var/log/mail.log
06. Notice the relay is the domain (i12bretro.local) from the Email from address setting
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Advanced Configuration via CLI
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To make more advanced configuration changes, like using a gmail account, you need to edit the postfix settings via command line
01. Back in the Proxmox web shell, run the following commands in the terminal
# install libsasl
apt install libsasl2-modules -y
# edit the postfix config
nano /etc/postfix/main.cf
02. Press CTRL+W and search for mydestination
03. Comment out mydestination by adding a # to the beginning of the line
04. Press CTRL+W and search for relayhost
05. Comment out relayhost by adding a # to the beginning of the line
06. Update or add the following configuration
relayhost = smtp.gmail.com:587
smtp_use_tls = yes
smtp_sasl_auth_enable = yes
smtp_sasl_security_options =
smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd
smtp_tls_CAfile = /etc/ssl/certs/Entrust_Root_Certification_Authority.pem
07. Press CTRL+O, Enter, CTRL+X to write the changes
08. Continue with the following commands in the terminal
# create /etc/postfix/sasl_passwd
nano /etc/postfix/sasl_passwd
09. Add a line to configure gmail authentication
smtp.gmail.com:587 ≪%youraccount%≫@gmail.com:≪%yourpassword%≫
10. Press CTRL+O, Enter, CTRL+X to write the changes
11. Continue with the following commands in the terminal
# update postfix lookup tables
postmap hash:/etc/postfix/sasl_passwd
# limit access to sasl_passwd to only root
chmod 600 /etc/postfix/sasl_passwd
# restart postfix service
systemctl restart postfix
# test from postfix directly
echo "Test email from Proxmox: $(hostname)" | mail -s "Proxmox Testing" ≪%youraccount%≫@gmail.com
# send a test from proxmox
echo "Test email from Proxmox: $(hostname)" | /usr/bin/proxmox-mail-forward
Sources: https://forum.proxmox.com/threads/get-postfix-to-send-notifications-email-externally.59940/,
https://www.reddit.com/r/homelab/comments/5nzmm3/setting_up_the_proxmox_email_alerts/
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