test_imaplib fail when installing python3.6.1 on centos6.9

[Terry Reedy]

On 4/30/2017 9:09 AM, Wade Wang wrote:
> Hello, everyone. I'm trying to install Python 3.6.1 on my CentOS 6.9
> server, but test_imaplib always fails its test when make test. Here is what
> I got:
> 
>> ======================================================================
>> ERROR: test_logincapa_with_client_certfile (test.test_imaplib.RemoteIMAP_
> SSLTest)
>> ----------------------------------------------------------------------
>> Traceback (most recent call last):
>>    File "/root/Python-3.6.1/Lib/test/test_imaplib.py", line 973, in
> test_logincapa_with_client_certfile
>>      certfile=CERTFILE)
>>    File "/root/Python-3.6.1/Lib/imaplib.py", line 1280, in __init__
>>      IMAP4.__init__(self, host, port)
>>    File "/root/Python-3.6.1/Lib/imaplib.py", line 197, in __init__
>>      self.open(host, port)
>>    File "/root/Python-3.6.1/Lib/imaplib.py", line 1293, in open
>>      IMAP4.open(self, host, port)
>>    File "/root/Python-3.6.1/Lib/imaplib.py", line 294, in open
>>      self.sock = self._create_socket()
>>    File "/root/Python-3.6.1/Lib/imaplib.py", line 1285, in _create_socket
>>      server_hostname=self.host)
>>    File "/root/Python-3.6.1/Lib/ssl.py", line 401, in wrap_socket
>>      _context=self, _session=session)
>>    File "/root/Python-3.6.1/Lib/ssl.py", line 808, in __init__
>>      self.do_handshake()
>>    File "/root/Python-3.6.1/Lib/ssl.py", line 1061, in do_handshake
>>      self._sslobj.do_handshake()
>>    File "/root/Python-3.6.1/Lib/ssl.py", line 683, in do_handshake
>>      self._sslobj.do_handshake()
>> ssl.SSLError: [SSL: TLSV1_ALERT_UNKNOWN_CA] tlsv1 alert unknown ca
> (_ssl.c:749)
>>
>> ======================================================================
>> ERROR: test_logincapa_with_client_ssl_context
> (test.test_imaplib.RemoteIMAP_SSLTest)
>> ----------------------------------------------------------------------
>> Traceback (most recent call last):
>>    File "/root/Python-3.6.1/Lib/test/test_imaplib.py", line 979, in
>> test_logincapa_with_client_ssl_context
>>      self.host, self.port, ssl_context=self.create_ssl_context())
>>    File "/root/Python-3.6.1/Lib/imaplib.py", line 1280, in __init__
>>      IMAP4.__init__(self, host, port)
>>    File "/root/Python-3.6.1/Lib/imaplib.py", line 197, in __init__
>>      self.open(host, port)
>>    File "/root/Python-3.6.1/Lib/imaplib.py", line 1293, in open
>>      IMAP4.open(self, host, port)
>>    File "/root/Python-3.6.1/Lib/imaplib.py", line 294, in open
>>      self.sock = self._create_socket()
>>    File "/root/Python-3.6.1/Lib/imaplib.py", line 1285, in _create_socket
>>      server_hostname=self.host)
>>    File "/root/Python-3.6.1/Lib/ssl.py", line 401, in wrap_socket
>>      _context=self, _session=session)
>>    File "/root/Python-3.6.1/Lib/ssl.py", line 808, in __init__
>>      self.do_handshake()
>>    File "/root/Python-3.6.1/Lib/ssl.py", line 1061, in do_handshake
>>      self._sslobj.do_handshake()
>>    File "/root/Python-3.6.1/Lib/ssl.py", line 683, in do_handshake
>>      self._sslobj.do_handshake()
>> ssl.SSLError: [SSL: TLSV1_ALERT_UNKNOWN_CA] tlsv1 alert unknown ca
> (_ssl.c:749)
>>
>> ----------------------------------------------------------------------
>> Ran 95 tests in 27.005s
>>
>> FAILED (errors=2)
>> 1 test failed again:
>>      test_imaplib
>>
>> Total duration: 6 min 34 sec
>> Tests result: FAILURE
>> make: *** [test] Error 1
> 
> Any solution or suggestion?

Unless you get a better solution here, open an issue on bugs.python.org. 
  In the Nosy list box, enter 'ssl' and click the list under 'module'.


-- 
Terry Jan Reedy