Hello
My team can help you with missing module on your server.
Me and my team have experience with web hosting industry from 2002 year when we launched own HSP (hosting service provider)
We have experience with such technologies as Virtuozzo, different types of virtualization (OpenVZ, KVM, XEN), different distributives of OS Linux / OS Unix / OS MS Windows Server systems, VPN/DNS/IPTables/Firewalls/web servers/mail servers configuration and tuning