Как отправить сообщение через smtplib?

import smtplib
 
sender = 'почта_отправителя'
receivers = ['почта_получателя']
 
message = """ Тут какое-то сообщение"""
 
try:
   smtpObj = smtplib.SMTP('localhost')
   smtpObj.sendmail(sender, receivers, message)         
   print "Successfully sent email"
except smtplib.SMTPException:
   print "Error: unable to send email"

Traceback (most recent call last):
  File "1.py", line 14, in <module>
    smtpObj = smtplib.SMTP('localhost')
  File "/usr/lib/python2.7/smtplib.py", line 249, in __init__
    (code, msg) = self.connect(host, port)
  File "/usr/lib/python2.7/smtplib.py", line 309, in connect
    self.sock = self._get_socket(host, port, self.timeout)
  File "/usr/lib/python2.7/smtplib.py", line 284, in _get_socket
    return socket.create_connection((port, host), timeout)
  File "/usr/lib/python2.7/socket.py", line 571, in create_connection
    raise err
socket.error: [Errno 111] Connection refused

>>> import smtplib
>>> 
>>> server = smtplib.SMTP()
>>> server.connect()
(220, b'localhost.localdomain ESMTP Sendmail 8.14.5/8.14.5; Mon, 30 Sep 2013 13:09:38 GMT')
>>> server.noop()
(250, b'2.0.0 OK')
>>> server.quit()
(221, b'2.0.0 localhost.localdomain closing connection')
>>>