We are running hybrid 2015 CU6 FH2 and SFB Online and for some reason, SFB is showing available for any invalidupn@Mydomain.com address whether it is valid or not.even terminated users if type their UPN@Mydomain.com show as online
For example, invalid SIP address below showing as online:
abc@mydomain.com
zyzzzzjfvlmdf@Mydomain.com
if you type any name like 123@mydomain.com it shows as it online. Anyone else experiences this issue?
