About 2 years ago I had a customer that required their own private mail server. I set up Mail-in-a-Box on a $5 Digital Ocean droplet, and they've been happy with it ever since.
The integration with Let's Encrypt and a relatively smooth upgrade process has made it one of the more enjoyable services I manage. I would highly recommend it.
The integration with Let's Encrypt and a relatively smooth upgrade process has made it one of the more enjoyable services I manage. I would highly recommend it.