SUMMARY

This article explains how to configure the iPhone calendar configuration settings to be able to synchronize calendar appointments via CalDAV. 

DETAIL

CalDAV account information:

1. Navigate on the iPhone device to: Settings > Mail, Contacts, Calendars
2. Next select within the accounts section select "Add Account" and select "Other"
3. Within the  "Calendars" section select "Add CalDAV account"
4. Server: example.com
5. User Name: mailboxname@postofficename
6. Password: ******

Advanced Settings:

1. Use SSL: Off
2. Port: 8080 (or the port number that MailEnable HTTPMail service is running on)
3. Account URL: http://example.com:8080/calendar