shinji@icarus:~$ openssl s_client -connect smtp.gmail.com:465
CONNECTED(00000003)
depth=1 C = US, O = Google Inc, CN = Google Internet Authority
verify error:num=20:unable to get local issuer certificate
verify return:0
---
Certificate chain
 0 s:/C=US/ST=California/L=Mountain View/O=Google Inc/CN=smtp.gmail.com
   i:/C=US/O=Google Inc/CN=Google Internet Authority
 1 s:/C=US/O=Google Inc/CN=Google Internet Authority
   i:/C=US/O=Equifax/OU=Equifax Secure Certificate Authority
---
Server certificate
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
subject=/C=US/ST=California/L=Mountain View/O=Google Inc/CN=smtp.gmail.com
issuer=/C=US/O=Google Inc/CN=Google Internet Authority
---
No client certificate CA names sent
---
SSL handshake has read 2108 bytes and written 348 bytes
---
New, TLSv1/SSLv3, Cipher is ECDHE-RSA-RC4-SHA
Server public key is 1024 bit
Secure Renegotiation IS supported
Compression: NONE
Expansion: NONE
SSL-Session:
    Protocol  : TLSv1.1
    Cipher    : ECDHE-RSA-RC4-SHA
    Session-ID: 28489A328E4191EEB99C1A5451CC7D3F9496C2D1364FD7944794AB81BD61060E
    Session-ID-ctx:
    Master-Key: 4317210777978C760339D2C0AFCC06744F2F3FDF9311B338814CC3958B851C2A4ABBDFFE7C8275EDD0925E8606FEEF95
    Key-Arg   : None
    PSK identity: None
    PSK identity hint: None
    SRP username: None
    TLS session ticket lifetime hint: 100800 (seconds)
    TLS session ticket:
    0000 - 63 53 11 b3 92 0d 59 63-15 90 58 10 84 f2 f7 6a   cS....Yc..X....j
    0010 - fe 3a fc b0 62 30 a6 66-68 29 2b e1 a9 20 87 52   .:..b0.fh)+.. .R
    0020 - 94 21 e3 54 6d 71 46 03-97 45 28 22 17 9d be 22   .!.TmqF..E("..."
    0030 - 21 91 f3 4d 7b 3b 5c 5c-80 81 f4 18 33 e8 55 bf   !..M{;\\....3.U.
    0040 - d3 53 4e a1 10 2d 06 42-be f7 ba b9 d5 64 d3 23   .SN..-.B.....d.#
    0050 - 8c 15 35 13 63 3d c6 7f-76 fd b7 c0 28 e9 2b cb   ..5.c=..v...(.+.
    0060 - c3 4e fe 60 35 07 c8 19-2b 04 e2 60 b4 d4 d4 34   .N.`5...+..`...4
    0070 - e6 ac ed 55 16 d2 bf 88-d4 47 94 4a 1e 0d 7c b5   ...U.....G.J..|.
    0080 - e2 39 da f0 8a c1 00 7c-4c 23 bf 92 f4 be 78 5e   .9.....|L#....x^
    0090 - f9 44 13 18                                       .D..

    Start Time: 1359294150
    Timeout   : 300 (sec)
    Verify return code: 20 (unable to get local issuer certificate)
---
220 mx.google.com ESMTP ot3sm4396730pbb.38 - gsmtp
ehlo test
250-mx.google.com at your service, [66.228.40.51]
250-SIZE 35882577
250-8BITMIME
250-AUTH LOGIN PLAIN XOAUTH XOAUTH2
250 ENHANCEDSTATUSCODES
quit
221 2.0.0 closing connection ot3sm4396730pbb.38 - gsmtp
read:errno=0
shinji@icarus:~$