Dear list members,

I've encountered a problem connecting to some https resources (especially one)
from some of my boxes. It seems the root cause is somewhere in openssl. So
here is my test case:

(debian stable box)
---8<---
abiessmann@git:~$ date
Do 10. Mai 11:03:12 CEST 2012
abiessmann@git:~$ openssl version
OpenSSL 0.9.8o 01 Jun 2010
abiessmann@git:~$ openssl s_client -connect banking.postbank.de:443
CONNECTED(00000003)
depth=2 /C=US/O=VeriSign, Inc./OU=VeriSign Trust Network/OU=(c) 2006 VeriSign,
Inc. - For authorized use only/CN=VeriSign Class 3 Public Primary
Certification Authority - G5
verify error:num=20:unable to get local issuer certificate
verify return:0
---
Certificate chain
<snip chain>
---
Server certificate
-----BEGIN CERTIFICATE-----
<snip certificate>
-----END CERTIFICATE-----
<some more snip>
---
SSL handshake has read 4623 bytes and written 447 bytes
---
New, TLSv1/SSLv3, Cipher is AES256-SHA
Server public key is 2048 bit
Secure Renegotiation IS NOT supported
Compression: NONE
Expansion: NONE
SSL-Session:
Protocol  : TLSv1
Cipher    : AES256-SHA
Session-ID:
1044F1F221E30E12B6E2217D9949149DED775F882C15F13AF63FE027495ADF4E
Session-ID-ctx: 
Master-Key:
678A316973D51613D56DC87C0FE8BB34E6B96CF4D9523715084AB3F3511F0C22C12252C2716FED128B6A1F591C806097
Key-Arg   : None
Start Time: 1336640595
Timeout   : 300 (sec)
Verify return code: 20 (unable
to get local issuer
certificate)
---
^C
--->8---

(one of the errournous boxes)
---8<---
abiessmann@azuregos % date 
Do 10. Mai 11:02:50 CEST 2012
abiessmann@azuregos % openssl version
OpenSSL 1.0.1b 26 Apr 2012
abiessmann@azuregos % openssl s_client -connect banking.postbank.de:443
CONNECTED(00000003)
write:errno=104
---
no peer certificate available
---
No client certificate CA names sent
---
SSL handshake has read 0 bytes and written 320 bytes
---
New, (NONE), Cipher is (NONE)
Secure Renegotiation IS NOT supported
Compression: NONE
Expansion: NONE
---
--->8---
(the same for all boxes which use 1.0+ release)

My questions:
 * can anyone confirm this behaviour (it seems other hosts are working with
   openssl 1.0+, but not the banking.postbank.de)?
 * can anyone give me a hint how to track this down?

Best regards

Andreas Bießmann
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