Symptoms
Initial symptoms will include users not being able to synchronize their devices with Exchange. Additionally, the following symptoms may occur:
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In the Application log on the Exchange server, you may see the following events:
Event Source: Server ActiveSync
Event ID: 3007
Description:
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 ActiveSync
Event ID: 3014
Description:
The Exchange mailbox Server: [mail.contoso.com] has reached its timeout threshold. The mailbox server will be protected from new requests for [60] seconds.
