nullmailer is a minimalistic and easy to configure MTA (mail transport agent). It is described on the homepage as follows:

Nullmailer is a mail transport agent designed to only relay all its messages through a fixed set of “upstream” hosts. It is also designed to be secure.

nullmailer is a good choice for systems that do not receive, but send mails like for example web servers.
To setup nullmailer to relay the mails to a smtp server that needs smtp authentication, just add the login credentials to the configuration file (/etc/nullmailer/remotes on Ubuntu systems)

[YOUR-SMPT-SERVER.COM] smtp --auth-login --user=[USER] --pass=[PASSWORD]

and restart the nullmailer service

# sudo /etc/init.d/nullmailer restart

To test the configuration, just use the mail command to send an e-mail:

# echo "This is a test e-mail..." | mail -s "Test e-mail" [YOUR-E-MAIL-ADDRESS]

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nullmailer is a minimalistic and easy to configure MTA (mail transport agent). It is described on the homepage as follows: Nullmailer is a mail transport agent designed to only relay all its messages through a fixed set of "upstream" hosts. It is also designed to be secure. nullmailer is a good choice for systems that do not receive, but send mails like for example web servers. To setup nullmailer to relay the mails to a smtp server that needs smtp authentication, just add the login credentials to the configuration file (/etc/nullmailer/remotes on Ubuntu systems) [YOUR-SMPT-SERVER.COM] smtp --auth-login --user=[USER] --pass=[PASSWORD] and restart the nullmailer service # sudo /etc/init.d/nullmailer restart To test the configuration, just use the mail command to send an e-mail: # echo "This is a test e-mail..." | mail -s "Test e-mail" [YOUR-E-MAIL-ADDRESS]