To go on top of the reverse DNS/mail comments, it can also be useful for running a service like codeburg pages, or some other program that handles its own virtual hosting and TLS, without interfering with your more traditional services.

Stalwart recently released CalDAV & CardDAV support, and it’s what I use for mail. It’s pretty secure by default too.

Haha thanks. From what I’ve figured out, this it’s Lemmy and HN that brought the traffic. I can’t seem to upload an image of the graph though :(