Email Configuration with Postfix to send email notices in koha

Step-1 Gmail Account setting Turn on the two-step verification and create an App password Step-2 Open the terminal and apply the below command one by one sudo su (Hit and Enter password) sudo apt-get update Install Postfix Mail Server sudo apt-get install postfix Select no configuration with the help of the arrow key and then select Ok with the tab key Copy the file sudo cp /usr/share/postfix/main.cf.debian /etc/postfix/main.cf Install Packages below sudo apt-get install libsas12-2 sudo apt-get install libsas12-modules sudo apt-get install ca-certificates Open the following file with your favorite editor sudo gedit /etc/postfix/main.cf Copy and Paste the following lines at the bottom of file:- Relayhost = [smtp.gmail.com]:587 smtp_sasl_auth_enable = yes smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd smtp_sasl_security_options = noanonymous smtp_tls_CAfile = /etc/postfix/cacert.pem smtp_use_tls = yes Open the following file sudo gedit /etc/postfix/sasl_passwd Add your Gmail account ID and password in the file [smtp.gmail.com]:587 gmailid@gmail.com:16 digit app password Change the permission of the sasl_passwd file sudo chmod 400 /etc/postfix/sasl_passwd Translate the /etc/postfix/sasl_passwd to Postfix lookup tables sudo postmap /etc/postfix/sasl_passwd Create the /etc/aliases.db sudo postalias hash:/etc/aliases Create the /etc/postfix/cacert.pem. Ubuntu 20.04 LTS user sudo cat /etc/ssl/certs/Equifax_Secure_CA.pem >> /etc/postfix/cacert.pem Ubuntu 18.04 LTS User sudo cat /etc/ssl/certs/thawte_Primary_Root_CA.pem >> /etc/postfix/cacert.pem Restart Postfix sudo /etc/init.d/postfix restart Enable email service sudo koha-email-enable library (Here library is the name of koha instance) Now Do few Setting in koha staff Interface Check the setting in koha for all patron categories Koha Administration→Patron categories→Overdue notice Required→Check yes Allow mail Notifications Koha Administration→Global System Preferences→Patrons→Enhancedmessagingpreferencess→ Allow Define Default overdue action Koha →Tools→ Overdue Notice/status triggers If you have already configured the postfix mail server to send the emails with the enabling less secure app google account. Now you may not able to send mail because Gmail has disabled a less secure app and this feature is being retired from 30th May 2022. You may follow the below steps only to enable sending the emails:- Create an App password (As above mentioned in step-1) Open the following file sudo gedit /etc/postfix/sasl_passwd Add your Gmail ID and password to the file [smtp.gmail.com]:587 gmailid@gmail.com:App Password(16 digit) Apply following commands sudo chmod 400 /etc/postfix/sasl_passwd sudo /etc/init.d/postfix restart Now your koha server is ready to send emails again. Check also to configure email through staff interface in koha version 20.11 or later Tags: Email ConfigurationKohaPostfix