[Twisted-Python] SMTP authentication

Sarah Addis sarahaddis3 at gmail.com
Tue Jul 24 06:36:55 EDT 2012

I am currently trying to use a SMTP server to send emails. However I keep
getting the same python authentication error outlined below. The SMTP
server requires authentication and can advertise CRAM-MD5 as an accepted
authentication method but fails when the client tries to use it. No other
methods are tried after the failure, Python's smtplib just raises an
Exception. I have attached the traceback below

    2012-07-19 15:21:45+0100 [ESMTPSender,client] Unhandled error in Deferred:
    2012-07-19 15:21:45+0100 [ESMTPSender,client] Unhandled Error
    Traceback (most recent call last):
*    ****Failure: twisted.mail.smtp.AUTHDeclinedError: 535 5.7.0
authentication failed***

    <<< 250 HELP
    >>> STARTTLS
    <<< 220 2.0.0 Ready to start TLS
    >>> EHLO localhost.localdomain
    <<< 250-server.company.co.uk Hello [], pleased to meet you
    <<< 250-PIPELINING
    <<< 250-8BITMIME
    <<< 250-SIZE 20480000
    <<< 250-DSN
    <<< 250-ETRN
    <<< 250-DELIVERBY
    <<< 250 HELP
  *  **>>> AUTH CRAM-**MD5*
    <<< 144 $DMwMTEEMDA2OC41MzA1DDVAaGQkcmlh&i5sYXRlbnMuY28udWs+
    >>> bGJ1aWxk3XIgYWRhZTUzNmY0OWU1YzU0NmY1MjM0OGIwNGE3^zhjYTg=
    <<< 535 5.7.0 authentication failed

    2012-07-19 15:21:45+0100 [-] SVNPoller: polling
    2012-07-19 15:21:45+0100 [ESMTPSender,client] Stopping factory
<twisted.mail.smtp.ESMTPSenderFactory instance at 0x5385908>

I have googled this problem extensively, the most useful website being
https://code.djangoproject.com/ticket/9488 but I am unsure how to
implement this solution within the twisted files. I would appreciate
any guidance on how to proceed with fixing this problem and which
files I should be looking at changing!
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