STEPS : POSTFIX CONFIGURATION

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1. Install Mail Packages

   yum install postfix mailx cyrus-sasl cyrus-sasl-plain -y


2. Create GMail Account

   a) Generate App Password


3. Edit sasl_password file and add gmail account details

   vi /etc/postfix/sasl_passwd

   [smtp.gmail.com]:587 <emailid>@gmail.com:**********


4. Generate DB file

   postmap /etc/postfix/sasl_passwd


5. Edit main.cf

   relayhost = [smtp.gmail.com]:587

   myhostname = oracle-vm.com


   # Enable SASL authentication for postfix

   smtp_use_tls = yes                                                                                 

   smtp_sasl_auth_enable = yes   

   smtp_tls_security_level = encrypt

   smtp_tls_CAfile = /etc/ssl/certs/ca-bundle.crt


   # Disallow methods that allow anonymous authentication

   smtp_sasl_security_options = noanonymous    


   # Location of sasl_passwd   

   smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd


6. Test EMAIL   

   echo "Test Email" | mail -s "Send Email from Linux" sendmail@gmail.com

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