Dumping SMTP over TLS traffic

This is the analysis of TLS traffic over SMTP by way of ssldump.  The server requested client cert and the client cert (gmail) was verified ok.  However, I could not identify which part dealt with SSL client certificate verification.

# ssldump -i eth0 port 25
New TCP connection #1: mail-ie0-f170.google.com(37742) <-> transfer(25)
1 1  1.4201 (1.4201)  C>S  Handshake
      ClientHello
        Version 3.3
        cipher suites
        TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
        TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
        TLS_ECDHE_ECDSA_WITH_RC4_128_SHA
        TLS_ECDHE_RSA_WITH_RC4_128_SHA
        TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA
        TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
        TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA
        TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
        TLS_RSA_WITH_AES_128_GCM_SHA256
        TLS_RSA_WITH_RC4_128_SHA
        TLS_RSA_WITH_RC4_128_MD5
        TLS_RSA_WITH_AES_128_CBC_SHA
        TLS_RSA_WITH_3DES_EDE_CBC_SHA
        TLS_RSA_WITH_AES_256_CBC_SHA
        TLS_DHE_RSA_WITH_AES_128_CBC_SHA
        TLS_DHE_DSS_WITH_AES_128_CBC_SHA
        TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA
        TLS_DHE_DSS_WITH_3DES_EDE_CBC_SHA
        TLS_DHE_RSA_WITH_AES_256_CBC_SHA
        TLS_DHE_DSS_WITH_AES_256_CBC_SHA
        TLS_EMPTY_RENEGOTIATION_INFO_SCSV
        compression methods
                  NULL
1 2  1.4221 (0.0020)  S>C  Handshake
      ServerHello
        Version 3.3
        session_id[0]=

        cipherSuite         TLS_RSA_WITH_AES_128_GCM_SHA256
        compressionMethod                   NULL
1 3  1.4221 (0.0000)  S>C  Handshake
      Certificate
Error: short handshake length: expected 17172 got 16380
Error: short handshake length: expected 4608083 got 792
1 4  1.6004 (0.1782)  S>C  Handshake
1 5  1.6004 (0.0000)  S>C  Handshake
1 6  1.7820 (0.1816)  C>S  Handshake
      Certificate
1 7  1.7820 (0.0000)  C>S  Handshake
      ClientKeyExchange
1 8  1.7820 (0.0000)  C>S  Handshake
      CertificateVerify
Not enough data. Found 258 bytes (expecting 16384)
1 9  1.7820 (0.0000)  C>S  ChangeCipherSpec
1 10 1.7820 (0.0000)  C>S  Handshake
1 11 1.7916 (0.0096)  S>C  Handshake
1 12 1.7916 (0.0000)  S>C  ChangeCipherSpec
1 13 1.7916 (0.0000)  S>C  Handshake
1 14 1.9699 (0.1782)  C>S  application_data
1 15 1.9703 (0.0004)  S>C  application_data
1 16 2.1483 (0.1779)  C>S  application_data
1 17 2.1484 (0.0000)  C>S  application_data
1 18 2.1484 (0.0000)  C>S  application_data
1 19 2.1779 (0.0294)  S>C  application_data
1 20 2.3952 (0.2173)  S>C  application_data
1 21 2.3952 (0.0000)  S>C  application_data
1 22 2.5747 (0.1794)  C>S  application_data
1 23 2.5747 (0.0000)  C>S  application_data
1 24 2.7329 (0.1582)  S>C  application_data
1 25 2.9110 (0.1780)  C>S  application_data
1    2.9111 (0.0000)  C>S  TCP FIN
1 26 2.9113 (0.0001)  S>C  application_data
1 27 2.9115 (0.0002)  S>C  Alert
1    2.9115 (0.0000)  S>C  TCP FIN