I’ve needed to update my email server for a while. This time I wanted to do the installation with Saltstack:

• Saltstack is fun
• It means I have an easy-to-read document about what is on the server and how it is installed.

Tools like Saltstack are not just for when you’ve got lots of servers. Having a simple set of files that show exactly what has been changed from default and why is invaluable.

Ok – there are a few parts to this system.

• exim4 handles the SMTP part – incoming and outgoing email;
• SpamAssassin will do the SPAM filtering;
• dovecot will handle reading email via IMAP

Plus we need various security bits and pieces, user accounts and so on.

I’ll be running SaltStack in masterless mode – there isn’t any point in running a dedicated Salt Master server.