*Install postfix and remove sendmail: <br>{{Code|sudo apt-get -y postfix mailutilssudo apt-get -y remove sendmail}}

Select internet from the pop up '''NOTE:''' During install of postfix, a popup box may display. If it does, select '''''Internet''''' and then '''OK'''.

*Execute the following to update /etc/postfix/main.cf:{{Code|sudo postconf -e 'relayhost<nowiki>=</nowiki>gmail-smtp-in.l.google.com'sudo postconf -e 'smtp_sasl_auth_enable<nowiki>=</nowiki>yes'sudo postconf -e 'smtp_sasl_password_maps<nowiki>=</nowiki>hash:/etc/postfix/sasl_passwd'sudo postconf -e 'smtp_sasl_security_options<nowiki>=</nowiki>'}}

echo "*Create '''/etc/postfix/sasl_passwd''' file with your Gmail login credentials that looks like below:{{Text|Text=gmail-smtp-in.l.google.com sahabcseuser@gmail.com:XXXXXX" > /etc/postfix/sasl_passwdpassword}}

*Create the password database: <br>{{Code|sudo postmap hash:/etc/postfix/sasl_passwd}}

*Protect the files with your Gmail login data:{{Code|sudo chown root:root /etc/init.dpostfix/sasl_passwdsudo chmod 600 /etc/postfix restart/sasl_passwd}}

echo "This is Content" *Restart Postfix:{{Code| sudo mail -s "This is subject" user@home/etc/init.comd/postfix restart}}

tail -f /var/log*Now try sending a mail, it should reach your Gmail account:{{Code|echo "This is Content" <nowiki>|</nowiki> sudo mail-s "This is subject" user@gmail.logcom}}

If all goes well, you should not see any errors.  REF: [http://ubuntulinux.co.in/blog/ubuntu/set-up-postfix-for-relaying-emails-via-gmail-smtp-server Set Up Postfix For Relaying Emails via gmail smtp server]