sudo dpkg-reconfigure exim4-config
mail sent by smarthost; no local mail system mail name: example.com ip for incoming: 127.0.0.1 ; ::1 other destinations: [blank] visible domain: example.com ip of outgoing: smtp.mandrillapp.com::587 dns queries: no split: no root recipient: [blank]
vim exim4.conf.localmacros MAIN_TLS_ENABLE = 1
vim password.client *::
sudo update-exim4.conf sudo service exim4 restart
exim -v test@example.com Subject: hi
vim /etc/email-addresses