Originally Posted by shambasha
Thank you so much for your feedback
so are you telling me if I am not connected to my corporate BIS server, Yahoo will not work?
do I need to activate my enterprise account first?
No, not saying that.
BIS is with RIM through your carrier. (BES is enterprise service, via your employer or a hosted BES service.)
The Yahoo-BIS service sometimes has issues. Plus there was RIM maintenance last night and the BIS was shut down for a while. That could what's going on with you, and you just have to wait for your system to come back online. If you've waited and your tired of it, try the other techniques. But give it some time for now.