For those of us who are “blessed” to run our e-mail environments on Microsoft’s hosted Exchange service (curently BPOS – Business Productivity Online Suite, soon to be Office365), some not-so-recent news has come to my attention concerning users with a high item count in their “critical path” folders. Microsoft published a document entitiled FAQ for Message Record Management in October 2010 detailing how they will be handling these types of users in the future.
The following is a table outlining Critical Path folders and the upper thresholds under which they will operate optimally:
- Inbox: 20,000 items
- Sent items: 20,000 items
- Deleted items: 20,000 items
- Calendar: 5,000 items
- Contacts: 5,000 items
Microsoft will migrate e-mails that bleed over these thresholds into a new set of folders that will be automatically created within the user’s mailbox. This process is known as Message Record Management (MRM) and the results will look something like this:
Note that this process is only engaged for users with high item count and has nothing to do with mailbox file size. Click here to visit Microsoft’s technet for more details on MRM.
All content and images taken from Microsoft Exchange Online Standard: FAQ for Message Record Management, published October 2010.