Calendar subscription — calendar subscription downloads the particular calendar from a web server to a local store.
Calendar publishing — calendar publishing is uploading of a calendar to a web store.
For manipulation with calendars, MS Outlook 2007 uses iCalendar (iCal), a standard format for exchange of calendar data.
Kerio MailServer supports the iCal format and it is, therefore, possible to subscribe calendars stored on Kerio MailServer in MS Outlook as well as to publish calendars at Kerio MailServer's accounts. In addition to subscription to their own calendars, users can also subscribe to calendars shared by other users.
In MS Outlook, subscribed calendars are available only in the read-only mode. Published calendars are available on the server for reading only (this implies that it is not edit published calendars when accessed by Kerio WebMail, for example).
After authentication, the traffic is performed by the HTTP protocol. Therefore, the service must be running in Kerio MailServer. In addition to this, it is also necessary to map the corresponding port on the firewall protecting the server. Otherwise, the service will not be available from the Internet (for details, see section 2.3 Firewall configuration).
Subscription and publishing of calendars may be useful especially to view calendars of users who do not have an account in Kerio MailServer or to publish calendar in the Internet.
Specific options and settings in MS Outlook are focused in the Kerio MailServer 6, User's Guide).