Server / Host Machine
Supported Operating Systems
- Windows 95 / 98 / ME
- Windows NT
- Windows 2000 Professional & Server
- Windows XP Home & Professional
- Windows Vista / 7 / 8 / 10 / 11
- Linux (all major distributions)
- SGI IRIX
- Sun Solaris
Good to know
Postmaster does not need a dedicated machine. It can run alongside other applications on any computer on your LAN — saving you hardware cost.
Network Requirement
You need a TCP/IP-based LAN so that email clients on each desktop can communicate with the Postmaster server.
- Standard Ethernet LAN (10/100/1000 Mbps)
- TCP/IP protocol configured on all machines
- Single internet connection (shared by all users via Postmaster)
Client / Desktop Requirements
Client machines use any standard email client — no new software for your staff to learn.
- Microsoft Outlook (all versions)
- Outlook Express
- Mozilla Thunderbird
- Eudora
- Netscape Communicator
- Any SMTP/POP3 compatible client
- Built-in Postmaster webmail (browser access)
Minimum Hardware Guidance
For small to mid-size offices (up to 100 users), a Pentium-class machine with 256 MB RAM and 10 GB disk space is typically sufficient. Postmaster runs as a background service and does not demand significant CPU resources. Larger deployments should contact us for a sizing recommendation.