Exchange Monitoring:

How to get the counter IDS 
regedit: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Perflib\009\Counter
The id is the number befor the name.
or with lodctr

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counters = 111111:msx_dc_access
MSExchange ADAccess Domain Controllers
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counters = 11111:msx_dumpster
MSExchangeTransport Dumpster
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counters = 68312:msx_queued_mailbox
MSExchangeIS Mailbox
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counters = 64848:msx_activesync
MSExchange ActiveSync
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counters = 66210:msx_rpc_clientaccess
MSExchange RpcClientAccess
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counters = 66804:msx_db_reads_avg_latency
MSExchange Database
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