increase the size of Enterprise Vault Exchange Mailbox task for server queue a6:

is there any way to increase the size of this que?

Enterprise Vault Exchange Mailbox task for server queue a6:
Requests to update folders with items that have been moved or copied to them. 
Enterprise Vault compresses the moved and copied item data that is placed in requests on queue A6. It also limits message storage on this queue to 100 MB. A compressed request to update 1,000 items occupies approximately 50 KB. So about 2,000 requests can be placed on the queue.  
When the queue is full, further requests are rejected. These moved and copied items have to wait for another shortcut processing run.

thanks