The Apple Calendar client (previously known as iCal) is particular about connecting to CalDAV and CardDAV servers, as it requires the correct configuration of DNS infrastructure. Unfortunately it often does not give meaningful errors when it is unable to connect to CalDAV servers.
To avoid connectivity issues, it is important that you have correctly configured SRV DNS records for the domains offering these services.
This document explains how to configure DNS and then configure the Calendar client. Make sure CalDAV is enabled in the MailEnable administration program.
CONFIGURING DNS INFRASTRUCTURE
When deploying CalDAV and CardDAV services, it is strongly recommended that you configure DNS records to allow clients to locate and connect to these services. This involves creating specific SRV DNS records so that they are published to clients.
For CalDAV you should configure the following SRV records :
Example: service record for server without transport layer security
_caldav._tcp SRV 0 1 8008 example.com.
Example: service record for server with transport layer security
_caldavs._tcp SRV 0 1 8443 example.com.
Note: In the above example, you should also have a DNS A (Host) record created that equates "example.com" to an IP address.
Important: The Calendar client will use port 8443 by default. If you are having issues connecting from the client, it is suggested that you consider running the server on port 8443 for SSL and 8008 for non-SSL. You should not use the port number for _caldavs as and _caldav.
Configuring the Apple Calendar client
To set up Calendar to connect via CalDAV, and autodiscover is correctly configured on the server, please follow these steps.
Manually configuring the Apple Calendar client
If your autodiscovery fails, or you need to manually configure the client, then the steps to manually add a calendar are:
Detailed information on how DNS records are used to locate CalDAV services can be found at:
|Class:||INT: Product Integration|
|Revised:||Wednesday, May 4, 2016|