Please don't top-post.
I do not understand
smtpd_tls_loglevel = 1 is sufficient for debugging.
ok
2013-04-12T21:49:03.160443+02:00 server postfix/smtpd[12238]: warning: TLS library problem: 12238:error:1409D08A:SSL routines:ssl3_setup_key_block:cipher or hash unavailable:s3_enc.c:423:This suggests your TLS library is broken.
The TLS library being which one ?I am using openSSL and all https web site are working fine. Is there another library involved ?
Thank you in advance Joan