I am trying to perform an e-discovery from the 2013 ECP but am receiving the following error
"Unable to execute the task. Reason: The version of the source mailbox must be Exchange 2013 or later. Mailbox 'MailboxName' has an earlier version."
The Journal Mailbox and Journal Server are still 2010.
Arbitration mailboxes were moved from 2010 to 2013 environments.
EventID 6 is also showing up in the logs when the Discovery fails.
We do not have immediate plans to migrate our Journal Server so my question is how to we perform searches until then?