My wife's office uses GW while mine runs MS Exchange, both with a BES. About 6 weeks ago, I stopped being able to invite her to calendar appointments from my BB, though she can still receive them when sent from the desktop client (Outlook 2003). She has the same problem from another Exchange user on a different server as well as from the RIM technicians using Domino. She has no problem sending me calendar appointments from GW or her BB.

Does anyone else have this same problem? If so, how did you solve it?