Hello to all! After groggy experience to withdraw a certain user (Rule,
Delivery Options ) from shared Calendar, i was compelled to erase a user and
to establish newly.
in the result from it, user was cease to receive invitations from shared
Calendar, but from now every order a meeting in the shared Calendar receive
an announcement " the e mail account does not exist ", say that the same
certain user continue to function as usual.

Archived from group: microsoft>public>exchange>application>conversion