Thank you for your reply. Unfortunately, the link with the patched version does not work for me. I get a 401 error message when I try to open the link.
After updating to 18.0.73, SNI no longer works with IMAP when Plesk Premium Email is installed. The IMAP proxy guam seems to be unable to generate the SNI configuration.
When I execute the command “plesk bin extension -e kolab sync-guam-config.php,” I get the following error message...