Hey Guys,
I just setup my Lync server and it works great for Domain A where everything important is located.
I have a Domain B setup at another location which is unfortunately not on the same forest (even though it should be in my opinion). My issue is that I can add users to the Lync Server Control Panel from Domain B just fine however I cannot get a user on a pc in Domain B to log into the Lync client at all. It doesn't work with a user I created on Domain B but does work if I am logged in to windows as Domain B logging into a Lync account created for Domain A.
In addition users on Domain A cannot search users on Domain B but can add them manually and the users information comes up. What have missed here to not allow users on Domain B to log into Lync?
This is Lync 2013 btw