======Configuring Calendar on iOS======
These instructions are for configuring a new Calendar account on iOS for iPhone, iPad and iPod Touch. The version of iOS used for these instructions is iOS v6.0, but they will probably work or help with other versions of iOS.

You need VPOP3 v6.0 or later for this to work. Note that a known issue in VPOP3 v6.3 may cause authentication problems - this should be fixed in VPOP3 v6.4.

  - In iOS go to **Settings**, then **Mail, Contacts, Calendars**
  - In the **Accounts** section, click **Add Account...**
  - Choose **Other**
  - Choose **Add CalDAV Account**
    - In **Server** enter the VPOP3 server IP address or DNS host name, eg **192.168.1.1**
    - In **User Name** enter the VPOP3 account name
    - In **Password** enter the VPOP3 password
    - In **Description** enter a description you want to use, eg "My VPOP3 calendars"
    - Press **Next**
    - You will see a **Verifying** screen. This may display warnings about being unable to verify the server identity or being unable to connect using SSL. Press **Continue** if you receive these warnings
    - You will probably then see a popup saying **Unable to verify account information**, this is normal because VPOP3 is not a calendar server which Apple have pre-configured into iOS. Press **OK** at this popup window.
    - There should now be an **Advanced Settings** button you can press on the account dialog in iOS. Press this.
    - In the **Advanced Settings** enter:
      - For **Use SSL**, you will want to turn this **Off** unless you have configured your VPOP3 with an SSL certificate (VPOP3 Enterprise only)
      - For **Port**, enter **5108** or whichever other port number you are using for the VPOP3 Webmail service
      - In Account URL enter, **%%http[s]://<server address>/dav/users/<username>/%%**. Use http or https at the beginning as appropriate. eg **http://192.168.1.1/dav/users/fred/**
      - Press the Back button labelled **CalDAV**
    - Press the **Next** button. Hopefully lots of ticks will appear, and the dialog will disappear if you have entered the details correctly

If you now go to the **Calendars** app in iOS, you should see the VPOP3 calendars listed when you press the **Calendars** button.