Server: Exchange 2013 Standard fully updated
Journal mailbox: local journal mailbox
Journal type: Standard (journal mailbox configured as journal destination of mailbox database)
Archiving software: on-premises application that downloads mail from journal mailbox and archives it in a repository
This setup has been working fine for years.
Problem: I wanted to test an external mail archiving software so I added a journal rule for all mail (inbound, outbound and internal) with destination to archive@externalservice.com (i.e. both journal standard and premium being actives at a time).
At first, it seemed to work fine archiving the same mails in both local journal mailbox & external service. But in fact we have confirmed some emails are not being archived.
First question: Is it possible to have both Standard & Premiun journal working at a time?
After that, we removed the journal rule (Premium) expecting Standard journal works fine again, however it is still not archiving some emails and we think they're not being copied to journal mailbox.
Note: it looks like the non-archived items are almost always from same senders.
How can I debug journal operations item-level?
FYI, we have confirmed same problem in Exchange 2016