How to send mails using php mail function on Ubuntu Linux server

Sending mails using php mail function on Ubuntu-Linux server

Questions: 1. How to Send mails using php mail function on Ubuntu-Linux server? 2. How to use a Gmail account as a free SMTP server on your Ubuntu-Linux server? 3. How to send mails via Gmail SMTP server? 4. How to configure postfix to send mail to gmail? 5. Relaying Postfix mails via smtp.gmail.com? Steps: 1. Install SMTP Server 2. Install Postfix 3. Install necessary packages 4. Configure Postfix 5. Create a new file for ssl password 6. Set the file permissions 7. Map file with postfix 8. Validate certificate 9. Reload postfix configuration 10. Send test mail 11. Set your gmail account as less secure Step 1. Install SMTP sever $sudo apt-get install ssmtp Step 2. Install Postfix $sudo apt-get install postfix Step 3. Install required packages and ssl certificate $sudo apt-get install postfix mailutils libsasl2-2 ca-certificates libsasl2-modules Step 4. Configure the Postfix $sudo nano /etc/postfix/main.cf And add the following lines to it 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 Step 5. Specify Gmail username and password in a file as ssl password $sudo nano /etc/postfix/sasl_passwd And add the following line to it [smtp.gmail.com]:587 USERNAME@gmail.com:PASSWORD Step 6. Set file permissions $sudo chmod 777 /etc/postfix/sasl_passwd Step 7. Update postfix config to use sasl_passwd file $sudo postmap /etc/postfix/sasl_passwd Step 8. Validate certificates $cat /etc/ssl/certs/thawte_Primary_Root_CA.pem | sudo tee -a /etc/postfix/cacert.pem Step 9. Reload postfix config for changes $sudo /etc/init.d/postfix reload Step 10. Send a test mail $echo "Test mail from me." | mail -s "Test Mail" email_id@sample.com Step 11. Set your Gmail account as less secure, logging into your gmail account using browser.