i'm getting spurious Errors on our GMS Installation.

Can anyone tell me where to start looking for certain problems

1. Unexpected Failure Detected:ServerExeption

2. Sent Items Syncronization

3. Could not resolve server name(0x108)

4. Authenticate returned unknown code(0xe00)

5. Unexpected Failure Detected: NotFoundExeption

and many more

Note: - there are no backups or GwChecks running at this point.