Initial symptoms will include users not being able to synchronize their devices with Exchange.  Additionally, the following symptoms may occur:

  • In the Application log on the Exchange server, you may see the following events:

Event Source: Server ActiveSync
Event ID: 3007
Exchange mailbox Server response timeout: Server: [] User: []. Exchange ActiveSync Server failed to communicate with the Exchange mailbox server in a timely manner. Verify that the Exchange mailbox Server is working correctly and is not overloaded.

Event Source: Server ActiveSync
Event ID: 3014
The Exchange mailbox Server: [] has reached its timeout threshold. The mailbox server will be protected from new requests for [60] seconds.

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