Estou tentando usar certificados SSL com o RabbitMQ, mas continuo recebendo erros de handshake com o broker.

Os certificados que eu gerei funcionam bem ao usar os comandos openssl 's_client' e 's_server' em janelas de terminal separadas e utilizando a porta 8443, conforme detalhado no guia de solução de problemas do SSL (http://www.rabbitmq.com/trou Troubleshooting-ssl.html)

O problema aparece quando tento conectar-me à porta SSL RabbitMQ 5671 usando o mesmo comando openssl 's_client':

Executando isso:

openssl s_client -connect localhost:5671 -cert /etc/rabbitmq/ssl/client/cert.pem -key /etc/rabbitmq/ssl/client/key.pem -CAfile /etc/rabbitmq/ssl/certificate_auth/cacert.pem

Produz isto:

CONNECTED(00000003)
depth=1 CN = RMQCA
verify return:1
depth=0 CN = roger.xxxxxx.com, O = server
verify return:1
139997248210760:error:14094410:SSL routines:SSL3_READ_BYTES:sslv3 alert handshake failure:s3_pkt.c:1256:SSL alert number 40
139997248210760:error:140790E5:SSL routines:SSL23_WRITE:ssl handshake  failure:s23_lib.c:177:
---

O ouvinte SSL começa bem, conforme indicado no log do RabbitMQ:

=INFO REPORT==== 19-May-2014::15:45:34 ===
 started TCP Listener on [::]:5672

=INFO REPORT==== 19-May-2014::15:45:34 ===
 started SSL Listener on [::]:5671

Ao tentar conectar-se à porta 5671 com 's_client', o erro aparece:

=INFO REPORT==== 19-May-2014::17:20:39 ===
accepting AMQP connection <0.3263.0> ([::1]:58538 -> [::1]:5671)

=ERROR REPORT==== 19-May-2014::17:20:39 ===
SSL: certify: ssl_handshake.erl:1346:Fatal error: handshake failure

=ERROR REPORT==== 19-May-2014::17:20:44 ===
error on AMQP connection <0.3263.0>: {ssl_upgrade_error,
                                      {tls_alert,"handshake failure"}} (unknown POSIX error)

Arquivo de configuração do RabbitMQ:

[    
    {rabbit, [
      {ssl_listeners, [5671]},
      {ssl_options, [{cacertfile, "/etc/rabbitmq/ssl/certificate_auth/cacert.pem"},
                     {certfile, "/etc/rabbitmq/ssl/server/cert.pem"},
                     {keyfile, "/etc/rabbitmq/ssl/server/key.pem"},
                     {verify, verify_peer},
                     {fail_if_no_peer_cert, false}]}
     ]} 
].

Informações do RabbitMQ:

[{pid,10375},
 {running_applications,
     [{rabbitmq_management,"RabbitMQ Management Console","3.2.3"},
      {rabbitmq_web_dispatch,"RabbitMQ Web Dispatcher","3.2.3"},
      {webmachine,"webmachine","1.10.3-rmq3.2.3-gite9359c7"},
      {mochiweb,"MochiMedia Web Server","2.7.0-rmq3.2.3-git680dba8"},
      {rabbitmq_management_agent,"RabbitMQ Management Agent","3.2.3"},
      {rabbit,"RabbitMQ","3.2.3"},
      {ssl,"Erlang/OTP SSL application","5.3.3"},
      {public_key,"Public key infrastructure","0.21"},
      {crypto,"CRYPTO version 2","3.2"},
      {asn1,"The Erlang ASN1 compiler version 2.0.4","2.0.4"},
      {os_mon,"CPO  CXC 138 46","2.2.14"},
      {inets,"INETS  CXC 138 49","5.9.8"},
      {mnesia,"MNESIA  CXC 138 12","4.11"},
      {amqp_client,"RabbitMQ AMQP Client","3.2.3"},
      {xmerl,"XML parser","1.3.6"},
      {sasl,"SASL  CXC 138 11","2.3.4"},
      {stdlib,"ERTS  CXC 138 10","1.19.4"},
      {kernel,"ERTS  CXC 138 10","2.16.4"}]},
 {os,{unix,linux}},
 {erlang_version,
     "Erlang R16B03-1 (erts-5.10.4) [source] [64-bit] [smp:2:2] [async-threads:30] [hipe] [kernel-poll:true]\n"},
 {memory,
     [{total,43812088},
      {connection_procs,5616},
      {queue_procs,42528},
      {plugins,451248},
      {other_proc,13805200},
      {mnesia,72752},
      {mgmt_db,10208},
      {msg_index,34560},
      {other_ets,1159472},
      {binary,1030272},
      {code,21819091},
      {atom,793505},
      {other_system,4587636}]},
 {vm_memory_high_watermark,0.4},
 {vm_memory_limit,787819724},
 {disk_free_limit,50000000},
 {disk_free,31267266560},
 {file_descriptors,
     [{total_limit,924},{total_used,4},{sockets_limit,829},{sockets_used,2}]},
 {processes,[{limit,1048576},{used,215}]},
 {run_queue,0},
 {uptime,7893}]
...done.

Qualquer ajuda seria muito apreciada

Desde já, obrigado.

ATUALIZAR:

Eu recebo os seguintes erros ao tentar me conectar ao utilitário rabbitmqadmin.

Arquivo de log:

=INFO REPORT==== 20-May-2014::14:39:12 ===
accepting AMQP connection <0.16589.0> ([::1]:58922 -> [::1]:5671)

=ERROR REPORT==== 20-May-2014::14:39:12 ===
SSL: certify: ssl_handshake.erl:1346:Fatal error: handshake failure

=ERROR REPORT==== 20-May-2014::14:39:17 ===
error on AMQP connection <0.16589.0>: {ssl_upgrade_error,
                                       {tls_alert,"handshake failure"}} (unknown POSIX error)

O comando rabbitmqadmin produziu o seguinte:

*** Could not connect: [Errno 1] _ssl.c:492: error:14094410:SSL routines:SSL3_READ_BYTES:sslv3 alert handshake failure