Package ssmtp

http://packages.debian.org/stable/mail/ssmtp

A secure, effective and simple way of getting mail off a system to your mail
hub. It contains no suid-binaries or other dangerous things - no mail spool
to poke around in, and no daemons running in the background. Mail is simply
forwarded to the configured mailhost. Extremely easy configuration.

WARNING: the above is all it does; it does not receive mail, expand aliases
or manage a queue. That belongs on a mail hub with a system administrator.

Version: 2.64