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Tips for this tutorial

This tutorial is aimed at adventuresome would-be system administrators. I try not to assume any specialised knowledge on your part, and try to provide useful tips and explanation along the way to help you build a valid mental model of what you're doing. At the same, this is not a trivial process. Luckily, if you try it out, and decide not to follow through, so long as you delete your VPS, you should not be out-of-pocket by more than a few cents.

This tutorial was developed for the Samoan Knowledge Society Initiative, in which the OER Foundation is very pleased to be involved. (Update 2022-02-10: we have also created a video tutorial based on this written tutorial)

Just about any and every server needs to be able to send email - whether it's end-user-email, like password recovery services for a website to emails to system administrators reporting on the status of system backups and errors. The problem is that it's non trivial (understatement) to set up a mail server properly.