What Does Drop-in, Native Compatibility Really Mean?

We use the words "drop-in compatible" to mean that the PostPath Server actually supports the low-level Exchange network protocols at the server - not through any kind of plug-in. The effect is that the Microsoft or Microsoft-enabled software (whether Outlook, Active Directory, existing Microsoft Exchange servers, or other applications like Blackberry Enterprise Server) communicate and interoperate with the PostPath Server using the same network protocol commands that they use with Exchange.

One could say that Microsoft and Microsoft-enabled software on the network "thinks" the PostPath Server is just another Exchange server; enabling fully-functional interoperability and feature support. It practice it means that no changes are required for the applications mentioned above to interoperate with the PostPath Server.

To create this network-protocol Exchange-interoperability, PostPath used a combination of the publicly available Microsoft documentation and packet-based protocol decoding. PostPath is the first and only company to have succeeding in understanding and implementing these protocols, making the PostPath Server the only drop-in Exchange alternative.