Install and Configure sendmail in Ubuntu

Sendmail is the mail server to send mail from your localhost 

1) If sendmail is not installed, do install it:

apt-get install sendmail


2) Configure hosts file correctly:



nano /etc/hosts

And make sure the line looks like this:


127.0.0.1 localhost localhost.localdomain yourhostnamehere



3) Reload /etc/hosts, so that the previous changes take effect



sudo /etc/init.d/networking restart that works but seems to be deprecated, better use:
/etc/init.d/networking stop
/etc/init.d/networking start



4) Run the sendmail config and answer ‘Y’ to everything:


sendmailconfig