A few people have asked about this in the past, and I was reminded about it today in an article I was reading. The question is whether Enterprise Vault supports Microsoft Business Productivity Online Suite (BPOS).
The answer is yes.
As of Enterprise Vault version 9.0 we support MS BPOS. However it should be noted:
* This is JOURNALING only. What happens is that a journal copy is sent to a local “in-house” Exchange server from the cloud, and EV will journal archive from there.
* Mailbox archiving is not supported.
* Standard and Dedicated BPOS are supported.