Email alias are not treated as one user in event invitations
If a user uses a different email alias to confirm an event invitation than the email the invitation was sent to, the answer (accept event) gets treated as a new user wanting to join the event. This leads to the situation where a user is two times on the participants list. Once with the alias the invitation was sent to (with the status needs-action) and once with the alias from which the confirmation was sent (with status accepted). This is not what a user would expect.
Is there a way to have Kolab treating event invitations/answers from different aliases as one user?
This is typically a client issue, in that it does not know that the two addresses are an alias for each other. This is complex for calendaring since just because you have 2 email addresses does not mean they are equivalent for the purposes of invites (e.g. my @mykolab.com and my @kolabsystems.com addresses are not equivalent, but both are "me"). I don't think there is any "these aliases are equivalent for the purposes of calendar invites" settings, however ... It's a thing I run into from time to time myself, so I feel the paper cut, but it's not exactly a huge issue (and I see this with people on other groupware systems with whom I work from time to time as well, so .. yeah .. calendaring... complex.)
Thanks for the clarification, Aaron! We can work around by using only use one address. Thought it would have been nice to have such a feature, it's nothing really of crucial importance.