$ openssl s_client -ssl3 -connect mail.google.com:443
CONNECTED(00000003)
depth=2 C = US, O = GeoTrust Inc., CN = GeoTrust Global CA
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=mail.google.com
   i:/C=US/O=Google Inc/CN=Google Internet Authority G2
 1 s:/C=US/O=Google Inc/CN=Google Internet Authority G2
   i:/C=US/O=GeoTrust Inc./CN=GeoTrust Global CA
 2 s:/C=US/O=GeoTrust Inc./CN=GeoTrust Global CA
   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=mail.google.com
issuer=/C=US/O=Google Inc/CN=Google Internet Authority G2
---
No client certificate CA names sent
---
SSL handshake has read 3580 bytes and written 284 bytes
---
New, TLSv1/SSLv3, Cipher is ECDHE-RSA-RC4-SHA
Server public key is 2048 bit
Secure Renegotiation IS supported
Compression: NONE
Expansion: NONE
SSL-Session:
    Protocol  : SSLv3
    Cipher    : ECDHE-RSA-RC4-SHA
    Session-ID: 2EBAB081B165664F323FA5341E78EEBF40160EED37A7E84C78980C2CF441DCAC
    Session-ID-ctx: 
    Master-Key: 9197FCB75CB81452C2891722E1BEA851EBF036699EEA5A1CF4066EAED8634EE0AAFF29ECEA0F6E1FCC1477C53B94C020
    Key-Arg   : None
    PSK identity: None
    PSK identity hint: None
    SRP username: None
    Start Time: 1413453799
    Timeout   : 7200 (sec)
    Verify return code: 20 (unable to get local issuer certificate)
---