What Len said, plus here are a few more tips: 1. Do use Windows 2000, as it has a larger total Registry size than NT (continue to use the "Imail Database," i.e. the Registry, as your userbase, as it is fastest).
2. Do not offer your users IMAP4 support. 3. Put in IMGate(s) to offload SMTP delivery tasks and perform anti-virus and anti-spam functions. 4. Put in the Declude product of your choice, but disable its filtering features. You will still be able to use its core queue-management functionality, which is essential for running an effective number of simultaneous Imail queue processes (which will in turn be handing off mail to IMGate). 5. Move the Imail application and your system pagefile to a RAM drive (highly encouraged). 6. Move your Imail\Spool directory to a RAM drive (risky, possible lost data in the event of an unexpected shutdown, but big speed benefits). 7. Consider an array of third-party webmail servers (will not have the response time of *unloaded* Imail Web Messaging, but they will likely perform better under load). In general, realize that your Imail installation is, frankly, gigantic. Imail can do the job better than any other all-in-one platform, but everything has its limits. Expect to add more support servers to the mix, as outlined above, to provide your users with adequate QoS. Sandy Please visit http://www.ipswitch.com/support/mailing-lists.html to be removed from this list. An Archive of this list is available at: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/
