Hi,
This Lync 2010 has been driving me freaking nuts for weeks now. Every single step of the way there is a problem, not a single thing works as advertised, and frankly I'm just tired of it all. I've setup much more complex software in less time so many times, this is just stupid.
Anyway, after 2-3 posts on other subjects, I'm now at the stage where a DNS / firewall change (see http://social.technet.microsoft.com/Forums/lync/en-US/75cffd4b-c5a8-40a1-9379-0c523f623066/file-transfer-failing-across-firewall?forum=ocsplanningdeployment#75cffd4b-c5a8-40a1-9379-0c523f623066 ) made file transfer across the firewall work, and at the same time it broke mobile device access and GAL address book download. testconnectivity.microsoft.com ofcourse reports everything is hunky dory when it's far from good. If I switch firewall back to before the change, I get GAL and mobile devices back, but file transfer breaks.
Unless there is a straight to the point solution for this, I'd like to work with someone to sort it out over TeamViewer or similar, we can do PayPal to cover the effort.
Thanks