Lync Server cannot communicate with Public IM if login using Mobile
Posted on 2011-10-10
I have PIC licensing enabled for communicating with Yahoo, GMail and Hotmail (public IM) users and it works great for my Lync users to talk to their Yahoo contacts when the Yahoo contact is using the desktop Yahoo client. However, when one of the Yahoo contacts is logged into Yahoo Mobile on his smartphone, they cannot communicate at all and presence doesn't flow either way. The Yahoo user can communicate with other Yahoo users just fine. Does the Yahoo Mobile client lack something needed to be able to communicate with Lync users (or anybody other than another Yahoo user)?