When I share a folder in my inbox with a collegue I can add his/her mailbox in grommunio webmail, and the shared folder is visible. When I add the additional inbox in Outlook classic, at first outlook freeces, after some minutes the mailbox is shown in Outlook, but when I try to open the mailbox the shared folder is not shown, even Outlook says the the synchronization has finished.
Had someone the same problem and found a solution. The access rights of the shared folder is set to "owner".
Thanks,
Florian