Proxmox replaces on premise Exchange server in hybrid environment

Greetings all, I stumbled upon the Proxmox mail gateway a couple of days ago when researching a replacement for VMware. We have a hybrid exchange setup. This means that most of our email function is in Exchange Online while the on premise server just functions as a relay for all devices on premise. The problem is that we do not need an Exchange server on site to do this simple relaying. We looked…