The solution (for me) was to modify /etc/ssl/openssl.cnf after the line: oid_section = new_oids
by adding: openssl_conf = default_conf [default_conf] ssl_conf = ssl_sect [ssl_sect] system_default = system_default_sect [system_default_sect] MinProtocol = TLSv1.2 CipherString = DEFAULT@SECLEVEL=1 This is obviously not a Kubuntu or KDE bug so I'll close this now. ** Changed in: kdepim (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1873746 Title: kmail in Kubuntu 20.04 beta cannot connect to dovecot IMAP server To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/kdepim/+bug/1873746/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs