I use the GetDelegate web service as I want to know the delegate permissions of an user.
The problem is that the response is ErrorItemNotFound if i call the service on our production server as soon as i check on a different user than my own.
On our test servers the service call succeeds, and if i call it for a non-existing user i get ErrorNonExistentMailbox.
The test servers are 2007SP1 and 2010SP2, production is 2010SP2.
Is there maybe a server setting we have set incorrectly?
As a workaround i will try to retrieve the Item_Effective_Rights field on all retrieved elements, but having the DelegatePermissionLevel items would make it much easier to manage the permissions.
Any ideas?