TLS problem with Lotus Domino v8.5.1 - mutual handshake fails

Hi, In our postfix server, we see SSL_accept error from hgrs-mail01.hgrs.tld.dom[161.x.y.z]: 0 Nov 16 08:54:52 ernesto postfix2cc/smtpd[18662]: warning: TLS library problem: 18662:error:140943E8:SSL routines:SSL3_READ_BYTES:reason(1000):s3_pkt.c:1053:SSL alert number 0: This error message appare

Lotus Domino server v8 fails mutual TLS handshake

Hi Steve, A Lotus Domino server v8 wants to connect to my postfix like several others do with client certificate authentication over TLS. Unfortunately, it fails early on with warning: TLS library problem: 25785:error:140943E8:SSL routines:SSL3_READ_BYTES:reason(1000):s3_pkt.c:1053:SSL alert numb