I'm trying to add a remote ICS calendar that lives at ftp://admin:firstname.lastname@example.org...pportunity.ics
(It's an OpenERP installation that publishes calendars on an FTP server)
to my ZCS 5.0.16_GA_2921.UBUNTU6 installation on Ubuntu dapper.
I can wget the calendar from the Zimbra server so it's not a firewall problem, and if I copy the ICS file to an HTTP location without authentication it works fine. But with the above mentioned URL it just says:
Failure communicating with remote server. Please try again later.
Is the FTP protocol not supported ?
Is specifying authentication not supported ?
Is specifying a different port not supported ?
Or is this supposed to work ?