Exchange Alternatives Round-up
richi writes "eWEEK has a review of Linux-based alternatives to MS Exchange: Group Where? Almost Anywhere. Focusing on how well they integrate with Outlook, it looks at Bynari Insight 4.2, CommuniGate Pro 4.2, Gordano 11 and Scalix Server 9.2.1."
That depends on your environment. There are still some companies who run 5.5 (I work at one) because the AD structure is so large and encumbered that duct taping a messaging environment to it would be really bad. Granted some of the new features of E2K3 SP1 are pretty nice (cross admin group movement, etc), it's still an ugly migration path for legacy clients. Let's face it, if your sites and subnets are not designed along MS whitepaper specs, you are going to have issues with routing in E2kX.