*** On Tue, Jul 24, 2012 at 6:36 AM, Sarah Addis <sarahadd...@gmail.com> wrote:
> 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. > As Phil mentioned, a code example would be useful (what API are you calling, at the very least?). A priori, however, this issue might happen for a number of reasons: 1. You're using the wrong username or password (did you try in an email client like Thunderbird?). 2. Twisted's CRAM-MD5 implementation is buggy. 3. The SMTP server's CRAM-MD5 implementation is buggy. 4. Bad description of issue in the SMTP server response - do the SMTP server logs say anything additional? Once you've ruled out options #1 and #4, for options #2 and #3 disabling CRAM-MD5 might help (though it'd be nice to figure out if there's some way Twisted could be changed to work with this SMTP server). While slightly annoying since it involves a bunch of repetition of code already in Twisted, disabling CRAM-MD5 should be pretty straightforward, and if you're using SSL or connecting to an SMTP server on localhost isn't really much of a reduction in security. If you have some indication that CRAM-MD5 is a problem with this particular server, filing a ticket for that on http://twistedmatrix.com might be nice. -- Itamar Turner-Trauring, Future Foundries LLC http://futurefoundries.com/ — Twisted consulting, training and support.
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