I am using Zimbra version "Release 5.0.16_GA_2921.UBUNTU8 UBUNTU8 FOSS edition".
I try to export my calendar using the url http://SERVER/service/home/USER/Calendar
The export is OK except that no attachment is included.
Is it a bug or a (not yet implemented) feature ?
I'll try using the CalDAV way, to see whether attachments can be exported.