On 8/28/22 17:03, Tim via users wrote:
Aug 29 00:00:54 rocky dovecot: imap-login: Disconnected (no auth attempts in 0 secs): user=<>, rip=192.168.1.2, lip=192.168.1.1, TLS: SSL_read() failed: error:14094412:SSL routines:ssl3_read_bytes:sslv3 alert bad certificate: SSL alert number 42, session=<HuOl/k3nFOLAqAEC>
Bad certificate is a bit generic, but in addition to basic things like expiration, investigate the SSL policies on your system (no SHA1 etc.).
Regards.