hi

i have problem in exchange 2013 with autodiscover i can't add email using outlook 2013 i have 3 CAS

in three different sites user who in cas 1 and cas 2 work fine i can add users who in cas 3 i can't add,

autodiscover in goodady point to cas1 when i open https://autodiscover.mydomain.com/autodiscover/autodiscover.xml 

using authentication for users in cas 3 i receive error 

This page isn’t working

autodiscover.mydomain.com.sa is currently unable to handle this request.