130Chapter 3: Components and Subsystems: Object Model
•UnityUMR. The Unity Message Repository (UMR) is used to store messages that
need to be sent to the mail store while that mail store is offline or unavailable to Unity.
When Unity is in this state, it is referred to as being in UMR mode. Messages are
stored as pairs of files (the message itself and a routing file indicating where it needs
to go) on the hard drive in a directory specified in this Registry branch (by default,
\commserver\UnityMTA). You also can indicate the minimum amount of disk space
that can be left on the drive that the UMR is storing messages on before Unity stops
allowing ...
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