Hello, this is an important fix for an installation problem:
Mail in a Box: python3-dev dependencies FIX
Install new instance at Vultr / Digital Ocean / other host:
SSH Login and run:
apt-get update && apt-get upgrade
apt-get purge python*
apt-get install lsb
Run Mailinabox install (curl or git option) as default…
If you had any question, mail me! Greetings