Fix error: postfix/sendmail MTA
錯誤訊息 error: postfix/sendmail[3354]: fatal: open /etc/postfix/main.cf: No such file or directory xxxxxxxxxxxxxxxxxxx from MTA 安裝 postfix 相關處理 sudo apt-get install postfix sudo nano /etc/postfix/main.cf sudo chmod 777 /etc/postfix/main.cf sudo postconf -n > /etc/postfix/main.cf sudo chmod 644 /etc/postfix/main.cf sudo systemctl status postfix sudo systemctl start postfix