I'm running RHEL 6 and using Pidgin to connect to the corporate Lync server. Overall it works quite well. My problem is that, apparently randomly, some of my 'buddies' are not properly looked up from the Lync server. In most cases I can add a new buddy by using their email address. Pidgin then goes and looks up all kinds of details, including name and status. For a small handful of people who I attempt to add as a buddy, none of that happens. I get no status or name, and the person is just listed in my buddy list as 'sip:their_email@our_company.com'. I can delete the buddy and re-add always with the same result.
I'm just wondering if anyone else has seen this and/or has any suggestions.