Directory & Resource Administrator 8.6x
Error performing task in Exchange 2007 Management Shell : ExecuteOperation : The exchange server address list service failed to respond. This could be because of an address list or email address policy configuration error.
To resolve this issue natively, restart the ?Microsoft Exchange System Attendant? Service, then restart the NetIQ Administration Service.
This also seems to be a "Leap Year" bug that Microsoft is aware of and has not yet resolved. If this error begins to occur on February 29th of a Leap Year, the resolution is to change the system clock to a Leap Year clock and restart the machine(s). First reported on February 29th, 2008.