My new setup will be on an Intel Quad Core server with 16gb of ram and at least 2tb of drive space. I'm not familiar with these headless servers. I have been running Virtualbox for a year cause I found it was more stable and didn't freeze up like VMware. I'm open to try anything but I would like something turnkey. I need everything Zimbra has to offer cause I'm converting customers from Exchange server.

Does any of the headless servers support reverse proxy out of the box?