Probe: {Probe.ResultName}Mailbox guid: {Probe.StateAttribute2}In Org: {Probe.StateAttribute3}With stack trace: {Probe.StateAttribute5} ...

Probe: {{Probe.ResultName}}Mailbox guid: {{Probe.StateAttribute2}}In Org: {{Probe.StateAttribute3}}With stack trace: {{Probe.StateAttribute5}} If the mailbox is on hold, dumpster quota will need to be increased. If not on hold, get last ELC exception from Export-MailboxDiagnosticLogs -Component MRM then statistics with -ExtendedProperties and look at all ELC properties.