8.1 Subscription to calendars
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## 8.1 Subscription to calendars

It is possible to subscribe any calendar stored on the WebDAV server in the iCal format. This implies that it is possible to subscribe to calendars stored in Kerio MailServer and/or iCal calendars stored on any other WebDAV server supporting the iCalendar format.

To enable subscription of a calendar in MS Outlook, the calendar needs corresponding access rights.

If the calendar is located in Kerio MailServer, it depends whether it is your calendar or a calendar of another user. It is necessary that the calendar's owner shares the calendar (at least by enabling read rights).

Calendars can be subscribed through the Share → Subscribe menu:

1. To subscribe a calendar in Kerio MailServer, a valid URL is required (see figure 8.1 Subscription to calendars). The address must follow this pattern:

   `http://server_name/ical[path]`

   Note: The URL of your Kerio MailServer's calendar is available in the Kerio WebMail's section Settings → Integration with Windows. In the Google Calendar, Windows Calendar section you will find your calendar's URL.

   Figure 8.1. Subscription to calendars

   For better understanding of the URL specification, view the following examples:

   - To subscribe the default calendar folder which belongs to your mailbox in Kerio MailServer, enter the URL in the following format:

     `http://server_name/ical`

     for example:

     `http://mail.company.com/ical`

   - It is also possible to subscribe another user's calendar, if the user shares it for you. For the login URL, use the following pattern:

     `http://server_name/ical/domain/user_name/calendar`

     for example

     `http://mail.company.com/ical/company.com/jsmith/PersonalCalendar`

   - To subscribe the default calendar, use the following URL format:

     `http://server_name/ical/public`

   - It is also possible to subscribe another user's calendar(s), if shared. The following URL format must be used:

     `http://server_name/ical/public/calendar_name`

   Secured, SSL-encrypted version of the HTTP protocol can also be used for subscription to a calendar. Some servers may even require encrypted connection. In such cases, use the `https://` string instead of `http://`.

   ### Warning

   If SSL encryption is used, it is necessary that a valid SSL certificate is installed on the host.

2. Once a valid URL address is entered, click on Next.

3. This opens a window for specification of login username and password for connection to a Kerio MailServer account. When logged in successfully, the next page of the wizard is opened where other parameters of the subscribed calendar can be set (see figure 8.2 Subscription to calendars):

   Figure 8.2. Subscription to calendars

   Calendar name

     Name of the calendar for reference in Windows Calendar. Name of the corresponding calendar folder as saved in Kerio MailServer is automatically filled in the entry. This name can be edited.

   Update interval

     The Update interval menu allows setting of regular refresh of the calendar.

   Include reminders

     The option allows including of reminders in the calendar subscription. However, subscription of reminders is not recommended. The calendar is in read-only mode and reminders cannot be closed.

   Include tasks

     Not supported in Kerio MailServer.

### Warning

In Windows Calendar, subscribed calendars ara available only for reading and it is therefore not possible to edit, add or remove individual events.

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Chapter 8 Support for Windows Calendar | Contents | 8.2 Calendar publishing