Backports for Debian GNU/Linux Version 10.x, Codename Buster (Howto install?)
Build because ssmtp isn't available in Buster, doh!
ssmtp (2.64-9+slashproc10+1) - extremely simple MTA to get mail off the system to a mail hub
Binary for arch amd64 (51.7 KB)

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.