OSX iCal connection

[kolab.user at use.startmail.com]

Several months ago there was a thread 
http://lists.kolab.org/pipermail/users/2015-October/020161.html with the 
 same subject. Back in 4.3 time I had all working but neglected to write 
 down required workarounds. Now, fresh in pristine Kolab_16, after 
 following secure HOWTO and mulity domains HOWTO, iOS devices have no 
 problems whatsoever however latest OSX is not working.
Instructions offered in https://kolabnow.com/clients/osx don't help.
 If I use account type Automatic then in log file:
"PROPFIND /.well-known/carddav HTTP/1.1" 405 245
"PROPFIND / HTTP/1.1" 405 226
"PROPFIND /principals/ HTTP/1.1" 405 237
and "Unable to verify account name or password" error
If I use account type Manual and specify server address as 
mail.example.com/iRony the configuration dialog completes, in log file I 
 see
"PROPFIND /iRony HTTP/1.1" 301 238
"PROPFIND /iRony/ HTTP/1.1" 401 291
user at example.com "PROPFIND /iRony/ HTTP/1.1" 207 637
user at example.com "OPTIONS /iRony/principals/kolab.user%40example.com/ 
 HTTP/1.1" 200 -
user at example.com "PROPFIND /iRony/principals/kolab.user%40example.com/ 
 HTTP/1.1" 207 1319
user at example.com "PROPFIND /iRony/addressbooks/kolab.user%40example.com/ 
 HTTP/1.1" 207 3676
user at example.com "PROPFIND /.well-known/carddav HTTP/1.1" 405 245
 user at example.com "PROPFIND / HTTP/1.1" 405 226
user at example.com "PROPFIND /principals/ HTTP/1.1" 405 237
user at example.com "PROPFIND /.well-known/carddav HTTP/1.1" 405 245
 and contacts list is empty
If I use account type Advanced and specify full URL listed in Show 
 CardDAV URL menu I don't see .well-known in server log but address book 
 is still empty in Contacts application.
Is anyone able to get Contacts and Calendar working in latest OSX?