What is in your smtpd logs? If all the above fails, I'd try strace to see what is causing the error.
I got the error message from ngrep log:
454 TLS connection failed: error:1408B0EA:SSL routines:SSL3_GET_CLIENT_KEY_EXCHANGE:tls rsa encrypted value length is wrong (#4.3.0)..
What should I do??
Regards,
Qing.
