Probe: {Probe.ResultName}Mailbox guid: {Probe.StateAttribute2}In Org: {Probe.StateAttribute3}Is archive: {Probe.StateAttribute4}With ...

Probe: {{Probe.ResultName}}Mailbox guid: {{Probe.StateAttribute2}}In Org: {{Probe.StateAttribute3}}Is archive: {{Probe.StateAttribute4}}With stack trace: {{Probe.StateAttribute5}}Get last ELC exception from Export-MailboxDiagnosticLogs -Component MRM then statistics with -ExtendedProperties and look at all ELC properties, specifically the value of ELCLastSuccessTimestamp. If mailbox is Archive use -Archive.