Login failed for user domain\domcontroller$ - 18456

I am running several instances of SQL Server 2005 sp2 on a W2k3 sp2 box (member server).

This morning, I installed reporting services to one of my instances and shortly after noticed I was getting the following two messages in my SQL Server log file:-

08/08/2007 11:05:03,Logon,Unknown,Login failed for user 'DOMAIN\DOMCONTROLLER$'. [CLIENT: xxx.xxx.xxx.xxx]
08/08/2007 11:05:03,Logon,Unknown,Error: 18456, Severity: 14, State: 16.

The above entries were each repeated 6 times every 15 minutes but with State 11. I created a logon for the above, and now get the above messages (state 16) repeated 3 times every 15 minutes!

Any ideas why?

Regards

Ian

It seems like a service in DOMCONTROLLER machine is trying to connect to SQL Server, it must be running under network service or local system account.

I recommend reading the following post, hopefully it will help you find the solution:

http://forums.microsoft.com/msdn/showpost.aspx?postid=66265&siteid=1

-Raul Garcia

SDE/T

SQL Server Engine