Strange issue Sync failing

I currently have Enterprise Vault for Exchange. The only thing we have done since the install is to add another exchange server to the targets, we created another system account for this server as stated in the documentation and all worked fine. 24 hours after this, the mailboxes on the original server will not sync and the archive task just fails if we try to sync a single mailbox the screen just freezes. I have tried to run a dtrace while trying to sync all mailboxes and get the following error.

 

:CArchivingAgentQueue::SendMQMessage() |Attempting to read the open message queue handle from the cache |
17 15:47:27.279  [4784] (AgentClientBroker) <5736> EV:L :CArchivingAgentQueue::SendMQMessage() |Could not get the message queue handle from the cache. Attempting to open a new queue handle |
18 15:47:27.279  [4784] (AgentClientBroker) <5736> EV:L :CArchivingAgentQueue::SendMQMessage() |Exiting routine |
19 15:47:27.279  [4784] (AgentClientBroker) <5736> EV:M CAAQ::SynchronizeSystemEx() - Failed to post message to queue, error = 0xC00E0003
20 15:47:27.279  [4784] (AgentClientBroker) <5736> EV:L CAAQ::SynchronizeSystemEx (Exit) |The queue does not exist or you do not have sufficient permissions to perform the operation.  [0xc00e0003]

 

I can open the system mailbox for this server with no problems. I have noticed though that there are a lot of automatically created profiles in outlook on the evault server ie "VaultMbxAgent etc" 5 of which will not open due to an error.

 

anyone have any ideas?

 

thanks in advance.