IMail
Server System Requirements
Software Requirements
- Microsoft Windows® 2003 Server or Microsoft Windows 2008 Server
- Microsoft .NET Framework 3.5 Service Pack 1
- Microsoft Internet Information Services (IIS) 5.0 or later
Hardware Requirements
- TCP/IP enabled NIC with a static IP address
- A broadband or dial-up connection to the Internet
- An Intel® Pentium® 4 1 GHz or higher or an equivalent processor
- 512 MB RAM minimum
Minimum Requirement
Operating System Windows 2003 (32-bit)
- 550 MHz
- 512 MB RAM
Windows 2003 (64-bit)
- 1.4 GHz
- 1 GB RAM
Windows 2008 (32-bit)
- 1 GHz
- 1 GB RAM
Windows 2008 (64-bit)
- 1.4 GHz
- 1 GB RAM
Windows 2008 R2
- 1.4 GHz
- 1 GB RAM
Recommended Minimum by Users
Number of Users Light Use Moderate Use Heavy Use 1 - 25
- 2 GHz
- 512 MB RAM(4)
- 2.4 GHz
- 1 GB RAM(4)
- 2.4 GHz
- 1 GB RAM(4)
25 - 100
- 2 GHz
- 1 GB RAM(4)
- 2.4 GHz
- 2 GB RAM
- 2 GHz Dual-Core
- 2 GB RAM
100 - 250
- 2 GHz
- 1 GB RAM(4)
- 2.4 GHz
- 2 GB RAM
- 2 GHz Dual-Core
- 2 GB RAM
250 - 500
- 2.4 GHz
- 2 GB RAM
- 2 GHz Dual-Core
- 2 GB RAM
- 2 GHz Dual-Core
- 2 GB RAM
500 - 1000
- 2 GHz Dual-Core
- 2 GB RAM
- 2 GHz
- 512 MB RAM(4)
- 2 GHz
- 512 MB RAM(4)
1000 - 2500
- 2 GHz Dual-Core
- 2 GB RAM
- 2 GHz Dual-Core
- 2 GB RAM
- Quad-Core
- 4 GB RAM
2500+
- 2 GHz Dual-Core
- 2 GB RAM
- Quad-Core
- 4 GB RAM
- Quad-Core +
- 4 GB RAM
- Light use is defined by the system primarily supporting POP3 users with less than 10% of users accessing mailboxes via web mail and/or mobile devices concurrently.
- Moderate use is defined as a mix of IMAP and POP3 users accessing the system with an average mailbox size less than 200 MB and less than 40% using web and/or mobile devices concurrently.
- Heavy use is defined as a mix of IMAP and POP3 users accessing the system with an average mailbox size exceeding 200 MB and more than 40% of users using web and or mobile devices concurrently.
- Microsoft recommends at least 2 GB RAM for Windows 2008.
For more information, please contact us.Web Messaging Client - Supported Browsers
- Microsoft® Internet Explorer 6.0 or later
- Mozilla Firefox 2.0.0.4 or later
- Safari 2.0.4 and later for Macintosh, or, the upgraded version of Safari installed with Mac OS X version 10.4.8
Email Clients
- Any RFC compliant mail client such as Outlook, Outlook Express, Thunderbird, and many others
- Outlook 2000 or later is required for Shared Calendaring (IMail Server Premium only)

