Starting at 8am today every alert OSTicket sends gets an undeliverable message reply with this error:
Remote server returned '554 5.6.0 Corrupt message content; STOREDRV.Deliver.Exception:ConversionFailedException; Failed to process message due to a permanent exception with message [BeginDiagnosticData]Content conversion: Corrupt summary TNEF content. ConversionFailedException: Content conversion: Corrupt summary TNEF content.[EndDiagnosticData] [Stage: PromoteCreateReplay]'
Since it sends an alert for each user, we get an undeliverable message... and thus it opensd up more tickets.
Were using OSTicket 1.17 with MS 365 Oauth
