Postfix Autoreply
So, forever and a day I’ve been using a service at autorespond+dkim@dk.elandsys.com to provide a simple autoreply for testing connectivity to a mail server. Sadly, the service has been discontinued after many years and so I decided to set up my own with Postfix, the most venerable of mail servers. Here’s how I did that. Assumptions You’re using a fairly recent edition of Postfix. I’m using 3.7.10. You can find out your version using postconf -d mail_version....