Great stuff! A thorough step-by-step guide for setting up a #chatmail server from @nprofile1q...
includes also considerations regarding firewall, setting up of ssh and some topics left out of the current main setup guide.

Note that even on a very small server you can easily host 10Ks of active chatmail addresses so if you consider setting up a server don't be shy letting others know the domain :)

https://blog.lifeupgraded.me/setup-a-chatmail-server-for-delta-chat/