[rpfeffer]

think I am getting somewhere now.

I just ran IEMStest.exe on the BES 5.0.2 server. I ran it for our test user on Exchange 2010 and it completed successfully except "EWS Calendar find request" failed.

I then ran it again for a user (me) that is still on 2003 that I cannot send to from the 2010 test account and it comes back with everything successful except "configuring user...failed." (initially it set no send as permission, so i ran the setsendaspermission tool for that account on the 4.1.7 BES and re-ran and just the configuring user failed.)

Thoughts? This makes me think it's more of a permissions issue on the BESAdmin account than an exchange disconnect. Then again, maybe i'm grasping at straws.