Exchange server 2003 is showing the following error in the event log.
Event ID: 9586
A problem occurred while doing OST sync operation for user Username.
The message last attempted to sync was:
Parent folder name: Outbox; FID: 2-260EBEF;
Message subject: Facilites Coverage for Company Name 6/23-7/7; MID: 1-8E6766; Error code: 0x80004005.