Our LAX cluster suffered a failure when logging SMTP transaction logs for search in the web UI for messages that arrived in the past 24 hours. Users will still be able to search and view the meta data of a message (from, to , subject, timestamp) but will not see the actual delivery logs if the message was processed by our LAX data center.
If you require the logs for a specific message, please open a support request with the meta information of the message and our staff will pull the logs from the backend.