openssl s_client -starttls smtp -connect smtp.gmail.com:587


Réponse normale :

Loading 'screen' into random state - done
CONNECTED(00000164)
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=smtp.gmail.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=smtp.gmail.com
issuer=/C=US/O=Google Inc/CN=Google Internet Authority G2
---
No client certificate CA names sent
---
SSL handshake has read 3493 bytes and written 488 bytes
---
New, TLSv1/SSLv3, Cipher is AES128-SHA
Server public key is 2048 bit
Secure Renegotiation IS supported
Compression: NONE
Expansion: NONE
SSL-Session:
Protocol : TLSv1
Cipher : AES128-SHA
Session-ID: 09C2D178CB482169FF8038E086AE080FC5E3E3499CB31D5A9BD7F0288053E1EB

Session-ID-ctx:
Master-Key: E7AFE624FA8B565A15A4D74F70C55CCF5CCA5A1BC5785709D02AC4628E557F27
6D6CAB356D2D9E2B7A27871973E1F790
Key-Arg : None
Start Time: 1465810924
Timeout : 300 (sec)
Verify return code: 20 (unable to get local issuer certificate)
---
250 SMTPUTF8
quit
221 2.0.0 closing connection o10sm26577843wjz.37 - gsmtp
read:errno=0