Yes, I'm talking about ssl client renegotiating and the possibility(?) to disable (for security reason RFC5746). To verify this point you can use the command: openssl s_client -connect xxxxx:443 after that you have run this command if you write R(RENEGOTIATING) if you an answer like: RENEGOTIATING depth=3 C = US, O = "VeriSign, Inc.", OU = Class 3 Public Primary Certification Authority verify return:1 ..... the renegotiating is enable but you receive R RENEGOTIATING 140567431063208: error:1409E0E5:SSL routines:SSL3_WRITE_BYTES:ssl handshake failure: s3_pkt.c:596: the renegotiating is disable. I'm sorry if I'm not been clear before. Thank you Regards, Maurizio