gistfile1.txt

$ echo | openssl s_client -connect mail.google.com:443 2>&1 
CONNECTED(00000003)
=depth=0 /C=US/ST=California/L=Mountain View/O=Google Inc/CN=mail.google.com
verify error:num=20:unable to get local issuer certificate
verify return:1
depth=0 /C=US/ST=California/L=Mountain View/O=Google Inc/CN=mail.google.com
verify error:num=27:certificate not trusted
verify return:1
depth=0 /C=US/ST=California/L=Mountain View/O=Google Inc/CN=mail.google.com
verify error:num=21:unable to verify the first certificate
verify return:1
---
Certificate chain
 0 s:/C=US/ST=California/L=Mountain View/O=Google Inc/CN=mail.google.com
   i:/C=US/ST=VeriSign, Inc./L=VeriSign Trust Network/O=Terms of use at https://www.verisign.com/rpa/CN=VeriSign Class 3 Extended Validation CA
---
Server certificate
-----BEGIN CERTIFICATE-----
MIICtzCCAiCgAwIBAgIKYFVx7gABAACJJzANBgkqhkiG9w0BAQQFADCBsDELMAkG
A1UEBhMCVVMxFzAVBgNVBAgTDlZlcmlTaWduLCBJbmMuMR8wHQYDVQQHExZWZXJp
U2lnbiBUcnVzdCBOZXR3b3JrMTUwMwYDVQQKEyxUZXJtcyBvZiB1c2UgYXQgaHR0
cHM6Ly93d3cudmVyaXNpZ24uY29tL3JwYTEwMC4GA1UEAxMnVmVyaVNpZ24gQ2xh
c3MgMyBFeHRlbmRlZCBWYWxpZGF0aW9uIENBMB4XDTEzMDUyMjE1NTExMVoXDTEz
MTAzMTIzNTk1OVowaTELMAkGA1UEBhMCVVMxEzARBgNVBAgTCkNhbGlmb3JuaWEx
FjAUBgNVBAcTDU1vdW50YWluIFZpZXcxEzARBgNVBAoTCkdvb2dsZSBJbmMxGDAW
BgNVBAMTD21haWwuZ29vZ2xlLmNvbTCBnzANBgkqhkiG9w0BAQEFAAOBjQAwgYkC
gYEAwKdt/R9qRgzyKuoIF1OCXsRYZjsv0ZnP0qQX0BaqQqqt6UBUiZnqvH6GhkiW
sWyefIExU+ApF6ehpm4oU9s+Hx40jTeDP9PM7q+QP1LFUr4qMDPQN1yGh0Lbblpg
7UrTIfBJ6ONaCihfwLP8xlLm8vQnr2GDKbL7WviSQlC1qWECAwEAAaMeMBwwGgYD
VR0RBBMwEYIPbWFpbC5nb29nbGUuY29tMA0GCSqGSIb3DQEBBAUAA4GBAC9h9s/l
rhE6EZPYJr30/NzCIL7q6+ppyU4i1WeIOxtyfr4LcOaMBeZ3WI7cXuyBjMAzg0c7
sXLrsjiIxzggSJbuvEB5bA/XDKCypWrnhlfsfSlLKsN7GpGO/DhTuOAlpWXWIx0i
vp90QoPnfPwttpPWgGg5+1pj+uuDZQi5L836
-----END CERTIFICATE-----
subject=/C=US/ST=California/L=Mountain View/O=Google Inc/CN=mail.google.com
issuer=/C=US/ST=VeriSign, Inc./L=VeriSign Trust Network/O=Terms of use at https://www.verisign.com/rpa/CN=VeriSign Class 3 Extended Validation CA
---
No client certificate CA names sent
---
SSL handshake has read 861 bytes and written 328 bytes
---
New, TLSv1/SSLv3, Cipher is AES256-SHA
Server public key is 1024 bit
Secure Renegotiation IS NOT supported
Compression: NONE
Expansion: NONE
SSL-Session:
    Protocol  : TLSv1
    Cipher    : AES256-SHA
    Session-ID: 119EBC96C507EAEF9687D2B03FFEC377A8F284E0906284F75A9A30B12B09FCAB
    Session-ID-ctx: 
    Master-Key: 63F5C7918E51B8AD151F96D49FB4D75D025AD061FA2CB503A4884D7C9DCAE09C2142A5D68320541D8E82B8AC6FE338A4
    Key-Arg   : None
    Start Time: 1370322582
    Timeout   : 300 (sec)
    Verify return code: 21 (unable to verify the first certificate)
---
DONE