$ openssl s_client -connect mail.rez-gif.supelec.fr:465
Loading 'screen' into random state - done
CONNECTED(00000150)
depth=1 /C=FR/L=Gif-sur-Yvette/O=SUPELEC REZO/OU=CA/emailAddress=admin@rez-gif.supelec.fr
verify error:num=19:self signed certificate in certificate chain
verify return:0
---
Certificate chain
 0 s:/C=FR/O=SUPELEC REZO/CN=mail.rez-gif.supelec.fr/emailAddress=mailadmin@rez-gif.supelec.fr
   i:/C=FR/L=Gif-sur-Yvette/O=SUPELEC REZO/OU=CA/emailAddress=admin@rez-gif.supelec.fr
 1 s:/C=FR/L=Gif-sur-Yvette/O=SUPELEC REZO/OU=CA/emailAddress=admin@rez-gif.supelec.fr
   i:/C=FR/L=Gif-sur-Yvette/O=SUPELEC REZO/OU=CA/emailAddress=admin@rez-gif.supelec.fr
---
Server certificate
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
subject=/C=FR/O=SUPELEC REZO/CN=mail.rez-gif.supelec.fr/emailAddress=mailadmin@rez-gif.supelec.fr
issuer=/C=FR/L=Gif-sur-Yvette/O=SUPELEC REZO/OU=CA/emailAddress=admin@rez-gif.supelec.fr
---
No client certificate CA names sent
---
SSL handshake has read 3265 bytes and written 322 bytes
---
New, TLSv1/SSLv3, Cipher is DHE-RSA-AES256-SHA
Server public key is 2048 bit
Compression: NONE
Expansion: NONE
SSL-Session:
    Protocol  : TLSv1
    Cipher    : DHE-RSA-AES256-SHA
    Session-ID: B645215788FA039BE1B85E3763A97AC4727816D8004274E06990B97840DF0C74

    Session-ID-ctx:
    Master-Key: 432951922178D130F94337DD1545415E5FD1DE0879460BA6440B2BB1A3BDC829
915D0F99DAC3E261512F378F8D54FA95
    Key-Arg   : None
    Start Time: 1267725479
    Timeout   : 300 (sec)
    Verify return code: 19 (self signed certificate in certificate chain)
---
220 mail.rez-gif.supelec.fr ESMTP Postfix