Proxmox Email Notification Configuration

#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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