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Release Notes IMail Server

System Requirements

• Microsoft® Windows 2003 Server, Microsoft® Windows 2008 Server

  Note: Windows 2000 Server is no longer supported for IMail Server

• Microsoft® Internet Explorer 6.0 or later
• Firefox 2.0.0.2 or later (for Microsoft Windows and Macintosh)
• Microsoft Internet Information Services (IIS) 5.0 and later
• Microsoft® .NET Framework 3.5 Service Pack 1
• Safari 2.0.4 for Macintosh, or, the upgraded version of Safari included with Mac OS X version 10.4.8

Tip: Before installing on Microsoft Windows 2008 Server, be sure IIS 7 has "Metabase Compatability" enabled. See also Installing IMail Server on Microsoft® Windows 2008.

Required Hardware

• TCP/IP enabled network interface card (NIC) with a static IP address
• Disk space is dependent on the number of users and usage.

Minimum Requirement

Recommended Minimum by Users

• 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.

System Guidelines for Mobile Synchronization Usage

These are general guidelines and are an approximation based on in-house performance testing. There is no guarantee that the recommendations stated below will exactly match each particular clients needs. These estimates are based on moderate mobile synchronization usage. Initial mobile synchronization and complete resynchronization of data tend to have very high cpu usage, depending on the amount of data being synchronized.

System performance will seriously be degraded should a large number of initial synchronizations happen simultaneously.

It may be necessary to run the IMailSync application pool with multiple processes should there be a large number of mobile users.

Warning: IMailSync, IAdmin, and IClient should never be run in the same application pool. Also, both IClient and IAdmin do not support multiple processes.

Required Software