>>It looks like it. Yes, sa is the default SQL Server account. I know it should always be password protected, but I'm not sure how strong our password is.
>>
>>Is there a quick way to check what autentication is used in SQL Server?
>>
>>Let me find out.
>>
>>BTW, which Event Viewer did you check that time? Did you find similar entries?
>
>Well, I do not think those two situations are related. Mine was related to something else. But, I believe this would have been in Application.

We're trying to figure out what may cause 'Server Unavailable' message once or twice a month.

Is 80K records for today in Application Event Viewer for MSSQLServer a clear indication of someone trying to hack the server and therefore bringing down the resources?