My system:
1.6.5 MARIADB edition, downloadable installer, Nginx
Linux 6.2.0-1013-aws #13~22.04.1-Ubuntu SMP

Brand new system, did install of iRedMail-1.6.5 using the downloaded version and install script.

SOGo works fine via the browser, however when trying to connect Apple Calendar from my Mac, OS Monterrey 12.7, see "unable to verify account name or password" when following instructions

The fact that I'm able to log in with the WebUI over port 443 makes me think it isn't a networking issue, as well as I do see the connexion attempt in logs:

When connecting via WebUI:

Nov 07 13:18:52 sogod [988]: SOGoRootPage successful login from '70.90.162.110' for user 'name@server.net' - expire = -1  grace = -1
Nov 07 13:18:52 sogod [988]: 70.90.162.110 "POST /SOGo/connect HTTP/1.0" 200 32/85 0.007 - - 0 - 15
Nov 07 13:18:53 sogod [988]: 70.90.162.110 "GET /SOGo/so/name%40server.net HTTP/1.0" 302 0/0 0.003 - - 0 - 15
Nov 07 13:18:53 sogod [988]: 70.90.162.110 "GET /SOGo/so/name%40server.net/view HTTP/1.0" 302 0/0 0.003 - - 0 - 15
Nov 07 13:18:53 sogod [988]: 70.90.162.110 "GET /SOGo/so/name@server.net/Mail HTTP/1.0" 302 0/0 0.003 - - 0 - 15
Nov 07 13:18:53 sogod [988]: 70.90.162.110 "GET /SOGo/so/name@server.net/Mail/view HTTP/1.0" 200 20721/0 0.024 89681 76% 0 - 15
Nov 07 13:18:53 sogod [988]: 70.90.162.110 "GET /SOGo/so/name@server.net/Calendar/alarmslist?browserTime=1699381133 HTTP/1.0" 200 60/0 0.006 - - 0 - 15
Nov 07 13:18:53 sogod [988]: 70.90.162.110 "POST /SOGo/so/name@server.net/Mail/0/folderINBOX/changes HTTP/1.0" 200 27/126 0.057 - - 0 - 15
Nov 07 13:18:53 sogod [1011]: 70.90.162.110 "GET /SOGo/so/name@server.net/Mail/0/view HTTP/1.0" 200 5856/0 0.063 - - 0 - 14
Nov 07 13:18:53 sogod [1011]: 70.90.162.110 "POST /SOGo/so/name@server.net/Mail/0/folderINBOX/view HTTP/1.0" 200 127073/48 0.357 - - 2M - 14
Nov 07 13:18:54 sogod [1011]: 70.90.162.110 "GET /SOGo/so/name@server.net/Mail/0/folderINBOX/labels HTTP/1.0" 200 211/0 0.053 - - 0 - 14
Nov 07 13:18:54 sogod [988]: 70.90.162.110 "POST /SOGo/so/name@server.net/Mail/unseenCount HTTP/1.0" 200 19/31 0.043 - - 0 - 15

When connecting via "Add a CalDAV account" via preferences I only see:

Nov 07 13:19:04 sogod [988]: 70.90.162.110 "PROPFIND /SOGo/so/name%40server.net HTTP/1.0" 200 1063/127 0.003 2567 58% 0 - 15

and get an error.  Here is the log from the Mac's end:

(see attachment)

Any thoughts?