Hi,
Newbie question, so maybe just some guidance on how to narrow this down might be helpful.
I have a pair of windows 2003 (SP1) servers with active/passive clustering configured in a test environment.
Occasionally (every few days), I'm noticing a period where I get a bunch of errors in the event logs, such as:

Event Type:Error
Event Source:AgentFramework
Event Category:None
Event ID:29
Date:3/21/2007
Time:12:16:16 PM
User:N/A
Computer:VNT-EVS1
Description:
ExchProtocol:EVS1_GRP-ExchProtocol-SMTPSVC-1:monitor:Failed to find the specified exchange server (VNT-EVS1) in the active directory.

and

Event Type:Error
Event Source:AgentFramework
Event Category:None
Event ID:6
Date:3/21/2007
Time:12:16:16 PM
User:N/A
Computer:VNT-EVS1
Description:
ExchProtocol:EVS1_GRP-ExchProtocol-SMTPSVC-1:monitor:Failed to initialize active directory protocol object.


It does this for every monitored protocol every minute (always the same two event id's) until the problem resolves itself on its own. During this time, exchange is up and everything appears to be working just fine. But the resource status shows an unknown state.

Any idea what it might be querying for? Connectivity to the DC/GC (of which there are two and both on the same LAN segment) is fine throughout the time these errors are appearing, and there aren't any other errors (or warnings or anything) that indicate something else being wrong. Or what would I need to look at to get some better idea of what's going on? I grabbed a sniffer trace from the tail end of this, and do see the box talking just fine to the domain controller and haven't been able to notice anything erroring out or retrying significantly.