OpenSSL - client connect
Memo for testing ssl/startls connection: StarTLS: [leo@thinkleo2 ~]$ openssl s_client -connect mail.wide-net.org:25 -starttls smtp CONNECTED(00000003) [...] Verify return code: 0 (ok) --- 220 srv01.mil1.wide-net.org ESMTP - Life is short talk fast! SSL: [leo@thinkleo2 ~]$ openssl s_client -connect mail.wide-net.org:465 CONNECTED(00000003) [...] Verify return code: 0 (ok) --- 220 srv01.mil1.wide-net.org ESMTP - Life is short talk fast!