title: SMTP AUTH extension trouble with Python
body: <p>I am trying to write a simple Python script to send emails through my company's SMTP server. I am using the following piece of code.</p>
  
  <pre><code>#! /usr/local/bin/python
  
  import sys,re,os,datetime
  from smtplib import SMTP
  
  #Email function
  def sendEmail(message):
          sender="SENDERID@COMPANY.com"
          receivers=['REVEIVER1@COMPANY.com','RECEIVER2@COMPANY.com']
          subject="Daily Report - " + datetime.datetime.now().strftime("%d %b %y")
          header="""\
                  From: %s
                  To: %s
                  Subject: %s
  
                  %s""" % (sender, ", ".join(receivers), subject, message)
          smtp = SMTP()
          smtp.set_debuglevel(1)
          smtp.connect('X.X.X.X')
          smtp.ehlo()
          smtp.starttls()
          smtp.ehlo()
          try:
                  smtp.login('SENDERID@COMPANY.com', '********')
                  smtp.sendmail(sender,receivers,header)
                  smtp.quit()
          except Exception, e:
                  print e
  
  #MAIN
  sendEmail("HAHHAHAHAHAH!!!")
  </code></pre>
  
  <p>Running this program, yields this result.</p>
  
  <pre><code>connect: ('X.X.X.X', 25)
  connect: ('X.X.X.X', 25)
  reply: '220 COMPANY.com [ESMTP Server] service ready;ESMTP Server; 05/25/11 15:59:27\r\n'
  reply: retcode (220); Msg: COMPANY.com [ESMTP Server] service ready;ESMTP Server; 05/25/11 15:59:27
  connect: COMPANY.com [ESMTP Server] service ready;ESMTP Server; 05/25/11 15:59:27
  send: 'ehlo SERVER1.COMPANY.com\r\n'
  reply: '250-COMPANY.com\r\n'
  reply: '250-SIZE 15728640\r\n'
  reply: '250-8BITMIME\r\n'
  reply: '250 STARTTLS\r\n'
  reply: retcode (250); Msg: COMPANY.com
  SIZE 15728640
  8BITMIME
  STARTTLS
  send: 'STARTTLS\r\n'
  reply: '220 Ready to start TLS\r\n'
  reply: retcode (220); Msg: Ready to start TLS
  send: 'ehlo SERVER2.COMPANY.com\r\n'
  reply: '250-COMPANY.com\r\n'
  reply: '250-SIZE 15728640\r\n'
  reply: '250 8BITMIME\r\n'
  reply: retcode (250); Msg: COMPANY.com
  SIZE 15728640
  8BITMIME
  send: 'quit\r\n'
  reply: '221 [ESMTP Server] service closing transmission channel\r\n'
  reply: retcode (221); Msg: [ESMTP Server] service closing transmission channel
  ERROR: Could not send email! Check the reason below.
  SMTP AUTH extension not supported by server.
  </code></pre>
  
  <p>How do I start debugging this "SMTP AUTH extension not supported by server." error?</p>
  
  <p>P.S.: I know the SMTP details and credentials are correct, as I have a working Java class with the exact details.</p>