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Archiving Task Fails with Event IDs 3305 and 2256

Problem

Archiving Task Fails with Event IDs 3305 and 2256

Error

The Task ‘Mailbox Archiving Task for …’ failed to log on to Exchange server ‘…’ using mailbox ‘SMTP:…’. Please ensure the mailbox has not been hidden, that the server is running and that the Vault account has sufficient permissions on the server.

Solution

Symptoms The Archiving Task Fails with Event IDs 3305 and 2256. The Event ID 3305 lists issues with the System Mailbox.
Running the Deployment Scanner shows Exchange connectivity is good.
Solution This issue may occur when the Microsoft Exchange Services on the Exchange Server(s) are not Started. Typically, this issue is seen when the Exchange System Attendant Service is Stopped. Verify that all Exchange Services that are set to Automatic are Started on the Exchange Server(s).
Categories: Enterprise Vault - Exchange 2010