maximal gleichzeitige Postfachverschiebung erweitern.
\\meinExchangeverzeichnis\exchange\bin\MSExchangeMailboxReplication.exe.config

<MRSConfiguration
...
MaxActiveMovesPerSourceMDB = "50"
MaxActiveMovesPerTargetMDB = "50"
MaxActiveMovesPerSourceServer = "50"
MaxActiveMovesPerTargetServer = "50"
...
</configuration>

Originalwerte:

MaxActiveMovesPerSourceMDB="20"
MaxActiveMovesPerTargetMDB="20"
MaxActiveMovesPerSourceServer="100"
MaxActiveMovesPerTargetServer="100"
MaxActiveJobsPerSourceMailbox="5"
MaxActiveJobsPerTargetMailbox="2"