For using a native solution for our Mailserver – proxmox have also a product as a Mailgateway short name as PMG (Proxmox Mail Gateway), which already in free license are able to be used for hosting these small setup, which are provided in and easy install iso file – ready to deploy for a larger scane mailserver, scanning al incomming mail – with a lot of options for modifications to fit the customers needs, an are easy with multiple domains
