Follow the steps below to configure the Proxmox email notification.
- Install the authentication library:
apt-get install libsasl2-modules - If Gmail has 2FA enabled, go to App Passwords and generate a new password just for Proxmox
- Create a password file:
nano /etc/postfix/sasl_passwd - Insert your login details:
smtp.gmail.com youremail@gmail.com:yourpassword - Save the password file
- Create a database from the password file:
postmap hash:/etc/postfix/sasl_passwd - Protect the text password file:
chmod 600 /etc/postfix/sasl_passwd - Edit the postfix configuration file:
nano /etc/postfix/main.cf - Add/change the following (certificates can be found in
/etc/ssl/certs/):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 smtp_tls_session_cache_database = btree:/var/lib/postfix/smtp_tls_session_cache smtp_tls_session_cache_timeout = 3600s - Reload the updated configuration:
postfix reload
Testing
echo "test message" | mail -s "test subject" youremail@gmail.com