Have you made sure your permissions are correct? Users access must be specifically added. They can then be "enabled" through the delegates menu in iCal. A seperate issue is that more than 1 calendar can not be pulled down per account or delegate.

Hi There, I have tried to add people through Delegation, but it says this server doesn't support delegation for this account. I did manage to get it to show me some delegation options, but couldn't connect to my calendar.

I am only trying to connect to one calendar and have removed other calendars through the web front end.

Hi, I've since tested this in snow leopard. In my setup, I can get access to the personal calendar fine. However no delegation is supported. when adding the calendar, are you specifying the specific address AND port in the custom url? IE https://yourdomain:443/SOGo/dav/username/ or if not using https http://yourdomain:80/SOGo/dav/username/ -- by default iCal will try to use darwin cal server URL and port.

I just wanted to say, that I've exactly the same problem.
I'm using SOGo-1.1.0 on debian lenny on the server and Mac OSX 10.6.2 on the client.
Apple Address book tells me:

The server responded with an error.
https://sogo.gau.local/SOGo/dav/patrick/ is not a location that supports this request.

Hi Mark, I have tried to use a specific port to no avail. I was getting exactly the same error message as geistio in iCal. Now the error I get in iCal is: The server is currently unreachable or its name is incorrect for “xxxx@sogo.xxxx.xxx”. We are using sogo-1.1.0-1.el5 on CentOS release 5.4 (Final).

RAndomMan are you using WOUseRelativeURLs = YES; in your config? This should get iCal 4 working for JUST your personal calendar. Delegate calendars still wont work. Your iPhone should show your delegate calendars though.

Thank you very much. That fixed the problem! I now have access to my calendar.

I actually have WOUseRelativeURLs set to YES, but iCal simply doesn't work for me..

SOGo's log says:

127.0.0.1 - - [12/Dec/2009:12:37:01 GMT] "PROPFIND /SOGo/dav/patrick/ HTTP/1.1" 401 0/449 0.012 - - 0
127.0.0.1 - - [12/Dec/2009:12:37:02 GMT] "PROPFIND /SOGo/dav/patrick/ HTTP/1.1" 207 1398/449 0.014 - - 0
Dec 12 12:37:02 sogod [3717]: [obj-dav-dispatch] did not find a method to server the REPORT
127.0.0.1 - - [12/Dec/2009:12:37:02 GMT] "REPORT /SOGo/dav/patrick/ HTTP/1.1" 501 201/91 0.004 - - 0
127.0.0.1 - - [12/Dec/2009:12:37:03 GMT] "PROPFIND /SOGo/dav/patrick/Calendar/ HTTP/1.1" 207 15845/653 0.054 - - 0

... and iCal says:

The server responded with an error.
https://sogo.gau.local/SOGo/dav/patrick/ is not a location that supports this request.

This is SOGo's configuration:
{
NSGlobalDomain = {
};
sogod = {
NGUseUTF8AsURLEncoding = YES;
OCSFolderInfoURL = "postgresql://sogo:sogo@localhost:5432/sogo/sogo_folder_info";
SOGoACLsSendEMailNotifications = YES;
SOGoAppointmentSendEMailNotifications = YES;
SOGoAuthenticationMethod = LDAP;
SOGoDefaultLanguage = English;
SOGoDefaultMailDomain = gau.local;
SOGoDraftsFolderName = Drafts;
SOGoFallbackIMAP4Server = localhost;
SOGoFoldersSendEMailNotifications = YES;
SOGoMailingMechanism = smtp;
SOGoOtherUsersFolderName = "Other Users";
SOGoProfileURL = "postgresql://sogo:sogo@localhost:5432/sogo/sogo_user_profile";
SOGoSMTPServer = localhost;
SOGoSentFolderName = Sent;
SOGoServerTimeZone = Europe/Vienna;
SOGoSharedFolderName = "Shared Folders";
SOGoTrashFolderName = Trash;
SOGoUserSources = (
{
CNFieldName = cn;
IDFieldName = uid;
UIDFieldName = uid;
IMAPHostFieldName = mailHost;
baseDN = "ou=users,dc=kanzlei,dc=gau,dc=local";
bindDN = "cn=sogo,dc=gau,dc=local";
bindPassword = sugu;
canAuthenticate = YES;
displayName = "Shared Addresses";
hostname = localhost;
id = public;
isAddressBook = NO;
port = 389;
}
);
WOApplicationRedirectURL = "https://sogo.gau.local";
WOMessageUseUTF8 = YES;
WOParsersUseUTF8 = YES;
WOPort = 20000;
WOUseRelativeURLs = YES;
};
}

Could you test again from the 20101501 nightly builds? The support for iCal 4 should be complete.

This has been resolved.