I'm having some problems with the accepting of calendar invitation.
All our user have a shorthand user name like firstname.lastname@example.org and have an alias of email@example.com which is there full name. (all account come from AD so can't be changed)
We want all communication to go via the FirstName.LastName alias but this doesn't seem to work for calendar entry. If I add an invitation to someone and they accept it via the webclient the response alway comes from their firstname.lastname@example.org instead of the canonical FullName.Lastname address.
Is there a way to force the calendar system to use the canonical address like it does for normal email.