mail transter agent su ubuntu/debian

Il modo più semplice per usare gmail come smtp relay

sudo -s
apt-get install ssmtp
mv /etc/ssmtp/ssmtp.conf /etc/ssmtp/ssmtp.conf.old
cat << EOF > /etc/ssmtp/ssmtp.conf

root=email@gmail.com
mailhub=smtp.gmail.com:587
UseSTARTTLS=yes
UseTLS=yes
AuthUser=email@gmail.com
AuthPass=********
EOF

exit

echo "This is a test message." | mail -s 'Test Message' root