The problem started yesterday, Lync contact shows up as offline on WLM, and I cannot send any message. On the Lync side, it shows as "Presence unknown" but you can still send message to WLM and I'd receive the message, but I can't send any replies.
I've tried to add MSN using username(live.com)@msn.com and the problem still persists. Anyone have solutions to this? :(
Can you remote users send IM and presence to your internal users?
If yes, it signifies that there is no wrong configuration with your lync server. Maybe there are someting wrong with MSN server settings. You need to open a ticket about this issue to get help from MSN engineer.
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