Nov  9 21:55:26 debian-prlsvr dovecot: imap-login: Disconnected (no auth attempts in 0 secs): user=<>, rip=192.168.1.1, lip=192.168.1.1, TLS handshaking: SSL_accept() failed: error:14094418:SSL routines:SSL3_READ_BYTES:tlsv1 alert unknown ca: SSL alert number 48, session=<kmNmgelAbgDAqAEB>