I got a weird issue.
In my comp. we got 2 CAS server exchange 2007. Recently, users keeps complaining that they cannot login OWA some times,
After I checked CASs, I found that one of them I call it CAS1 cann't authen user to login, but the CAS2 works OK in the meantime. At first I think there some thing wrong in CAS1, so I added a CAS3 into my env., and give it a isolated DNS for users to use owa. But the CAS3 got issue like CAS1 in less then a week.
So please, any ideas?
Now, I think if there any problem in one of my DC ( we have 2 site and 2 DCs per site),but I just don't know howto diagnose the problem.
thanks