Symptoms

 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 ActiveSyncEvent ID: 3007Description:Exchange mailbox Server response timeout: Server: [mail.contoso.com] User: [user@contoso.com]. 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 ActiveSyncEvent ID: 3014Description: The Exchange mailbox Server: [mail.contoso.com] has reached its timeout threshold. The mailbox server will be protected from new requests for [60] seconds.

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