This is using 2 MS Exchange 2010 servers, 1 being the CAS, and another one is MB/Hub. Autodiscover used to work until probably 3 months ago. It was found not working as we have to resort to manual settings keyin instead of automatic configured. Both exchange servers using SP3
I checked the Microsoft remote test connectivity test, and the result is failed. Please see the results as attached.
The 2nd test is, I using Test Email Autoconfiguration, it also failed. 3rd test, browse to https://autodiscoer.abc.com/autodiscover/autodiscover.html, and result with error - 600. But, other features - OWA, Outlookanywhere, and others are working fine. What could be the problem, and how to solve it?
thanks in advance.