Ok, thanks.
I listed the user and it looked ok, but to be safe I deleted the user on the assumption that I'd recreate him when I ran the provsioning task. I ran the provisioning task in report mode and it added the new mailbox. I then went to enable the mailbox and the mailboxes section was empty. I've reran the provisioning task and it again added a new mailbox, rather then saying updated mailbox. I've seen this before, where the EV system account is not using the correct rights to talk to exchange. I checked the group that the EV account is a member and it' was a member of the exchange view-only admin account. I rebooted the server to give it some time to replicate on the DCs and then tried again. Still no mailbox listed to enable and when I ran the provsioning task it again added the mailbox, rather then updating it. I removed the group and recreated it, again giving it exchange view-only admin memberhip, but no luck. I' used ADSIEdit to give the VSA full control to the mailserver and send / receive rights to the system mailbox but I still don't see mailboxes to enable. I was able to enable a single test mailbox and I didn't change anything, but I'm not sure what else to check or try. Any help would be appreciated. Thanks, Jacob