Recommended

(depends on email traffic and settings)

• Quad/Dual core CPU, 2.0 GHZ or better
• 2048 MB RAM
• bootable CD-ROM-drive
• 1024x768 capable VGA/Monitor for Installer
• Hard disk 72 GB (SATA/SAS/SCSI RAID controller with cache and BBU)
• 100/1000 MBps Network interface card

Minimum

• Pentium 4 class PC, 2 GHZ
• 512 MB RAM
• bootable CD-ROM-drive
• 1024x768 capable VGA/Monitor for Installer
• Hard disk 8 GB - ATA / SATA / SCSI
• 10/100 MBps Network interface card

Virtual appliance on a virtualization host

Use the same resource settings as you would use on physical hardware. The following platforms are supported:

• Proxmox VE
• VMware (vSphere, ESX, ESXi, Server, Workstation)
• OpenVZ
• KVM
• ...and others supporting Linux Kernel 2.6.27 as guest