Hello! Running Postfix 2.9.4 I need to enable TLS 1.2 (only 1.0 seems to be working). I’ve tried a number of things, and they all make postfix actually fail. In googling, it seems that this version of postfix and the version of OpenSSL on the server should allow for TLS 1.2 with no problems, but it seems that only 1.0 is working. If I add this, for example, TLS simply fails entirely:
smtpd_tls_protocols = TLSv1.2, TLSv1.1, !TLSv1, !SSLv2, !SSLv3
Thanks for any ideas.